JP2012167753A - Needle bearing and universal joint - Google Patents

Needle bearing and universal joint Download PDF

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Publication number
JP2012167753A
JP2012167753A JP2011029712A JP2011029712A JP2012167753A JP 2012167753 A JP2012167753 A JP 2012167753A JP 2011029712 A JP2011029712 A JP 2011029712A JP 2011029712 A JP2011029712 A JP 2011029712A JP 2012167753 A JP2012167753 A JP 2012167753A
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Prior art keywords
bearing
needle
cup
universal joint
needle bearing
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JP2011029712A
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Japanese (ja)
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Kota Nagasaki
廣太 長崎
Taketoshi Chibu
剛敏 千布
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NSK Ltd
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NSK Ltd
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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
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/588—Races of 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
    • F16D3/38—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another
    • F16D3/382—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected with a single intermediate member with trunnions or bearings arranged on two axes perpendicular to one another constructional details of other than the intermediate member
    • F16D3/385—Bearing cup; Bearing construction; Bearing seal; Mounting of bearing on the intermediate member
    • 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
    • F16C21/00—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement
    • F16C21/005—Combinations of sliding-contact bearings with ball or roller bearings, for exclusively rotary movement the external zone of a bearing with rolling members, e.g. needles, being cup-shaped, with or without a separate thrust-bearing disc or ring, e.g. for universal joints
    • 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
    • F16C2361/00—Apparatus or articles in engineering in general
    • F16C2361/41—Couplings

Abstract

PROBLEM TO BE SOLVED: To provide a needle bearing which is almost as large as a conventional needle bearing, to prevent a needle roller from falling off from a bearing cup by reliably regulating the axial movement of the needle roller, and maintains a function of a cup curl part, and to provide a universal joint.SOLUTION: This bearing includes the bearing cup 21 having a bottomed cylinder shape which is externally fit to a shaft part 11 in a rotatable manner through a plurality of needle rollers 27. The bearing cup 21 includes a bottom part 22, a cylinder part 23 axially extending from the outer peripheral edge of a bottom part 22, and a cup curl part 24 extending radially inward from the axial end of the cylinder part 23. Projection parts 25 for regulating the axial movement of the needle rollers 27 are formed in the entire periphery between a trajectory surface 23a provided on the inner peripheral surface of the cylinder part 23 and the cup curl part 24.

Description

本発明は、ニードル軸受及び自在継手に関し、より具体的には、例えば、自動車のステアリング装置のインターミディエイトシャフト等に組み込まれるニードル軸受及び自在継手に関する。   The present invention relates to a needle bearing and a universal joint, and more specifically, to a needle bearing and a universal joint incorporated in, for example, an intermediate shaft of an automobile steering apparatus.

例えば、自動車のステアリング装置には、インターミディエイトシャフトからの入力トルクを自在に伝達するため、自在継手が組み込まれる。この自在継手は、図４に示すように、十字状に形成される十字軸体４０（全体図示せず）、及びこの十字軸体４０の各軸部４１に取り付けられるニードル軸受５０を備える。ニードル軸受５０は、複数のニードルころ５７と、十字軸体４０の各軸部４１にその複数のニードルころ５７を介して回転自在に外嵌される有底円筒状の軸受カップ５１と、を備える。この軸受カップ５１は、基本的に、底部５２と、この底部５２の外周縁から軸方向に延びる円筒部５３と、を有する。なお、十字軸体４０の軸部４１と軸受カップ５１との隙間空間には、潤滑グリースが充填されている。   For example, a universal joint is incorporated in an automobile steering device in order to freely transmit an input torque from an intermediate shaft. As shown in FIG. 4, the universal joint includes a cross shaft body 40 (not shown) formed in a cross shape, and a needle bearing 50 attached to each shaft portion 41 of the cross shaft body 40. The needle bearing 50 includes a plurality of needle rollers 57 and a bottomed cylindrical bearing cup 51 that is rotatably fitted to each shaft portion 41 of the cross shaft body 40 via the plurality of needle rollers 57. . The bearing cup 51 basically has a bottom portion 52 and a cylindrical portion 53 extending in the axial direction from the outer peripheral edge of the bottom portion 52. The clearance space between the shaft portion 41 of the cross shaft body 40 and the bearing cup 51 is filled with lubricating grease.

そして、この種のニードル軸受５０は、自動車内部の空間的な取り合い等から寸法制限が厳しく、且つある程度の負荷容量が求められることから、保持器なしの総ニードルころタイプのものが用いられる。   The needle bearing 50 of this type is of a full needle roller type without a cage because the dimensional limit is strict due to the spatial relationship inside the automobile and a certain load capacity is required.

また、軸受カップ５１には、その円筒部５３の軸方向端部から径方向内側に延びるカップカール部５４が設けられており、このカップカール部５４がニードルころ５７の軸方向移動を規制して、ニードルころ５７が軸受カップ５１から脱落することを防止している。   The bearing cup 51 is provided with a cup curl portion 54 that extends radially inward from the axial end of the cylindrical portion 53, and this cup curl portion 54 restricts the axial movement of the needle roller 57. The needle roller 57 is prevented from dropping from the bearing cup 51.

ところで、近年、電動パワーステアリング装置の大型車両への適用等によって、ステアリング装置が高出力化して、インターミディエイトシャフトの入力トルクは増加している。これに伴い、ニードル軸受５０に加わる軸方向荷重も増加しているため、スキューによりニードルころ５７に加わる軸方向荷重も従来と比較して一段と増大している。従って、カップカール部５４では、ニードルころ５７の軸方向移動を確実に規制することができず、カップカール部５４の変形やニードルころ５７の脱落が発生する可能性があった。   By the way, in recent years, due to the application of the electric power steering device to large vehicles, the output of the steering device has increased, and the input torque of the intermediate shaft has increased. Along with this, the axial load applied to the needle bearing 50 has also increased, so the axial load applied to the needle roller 57 due to skew has further increased compared to the conventional case. Therefore, in the cup curl portion 54, the axial movement of the needle roller 57 cannot be reliably controlled, and the cup curl portion 54 may be deformed or the needle roller 57 may drop off.

このように、軸方向荷重の増加に伴い、自在継手に用いられるニードル軸受５０において、ニードルころ５７の脱落をより確実に防止する対策が求められるようになった。一方で、カップカール部５４は、ニードル軸受５０の組立時のニードルころの保持や潤滑グリースの保持等の機能を有するため、これらの機能を維持した状態でその対策を施す必要がある。   As described above, with the increase in the axial load, a measure for more reliably preventing the needle roller 57 from falling off is required in the needle bearing 50 used in the universal joint. On the other hand, since the cup curl portion 54 has functions such as holding needle rollers and holding lubricating grease when the needle bearing 50 is assembled, it is necessary to take countermeasures while maintaining these functions.

また、従来技術において、ニードルころ５７の軸方向移動が問題視されていたのは、ニードルころ５７が軸受カップ５１の底部５２の内側面、軸部４１の基端部、及び軸受カップ５１の軌道面の逃げ溝と接触して、ニードルころ５７にエッジロード及び早期剥離等が生じるという点である。そこで、これらの問題を解決するため、軸受カップの円筒部の基端部を一部分縮径することにより、ニードルころの軸受方向移動を規制し、軸部の基端部との接触を回避するものが知られている（例えば、特許文献１参照）。   In the prior art, the axial movement of the needle roller 57 has been regarded as a problem. The needle roller 57 has an inner surface of the bottom 52 of the bearing cup 51, a base end of the shaft 41, and a track of the bearing cup 51. It is that the edge roller and the early peeling occur in the needle roller 57 in contact with the relief groove on the surface. Therefore, in order to solve these problems, the diameter of the base end portion of the cylindrical portion of the bearing cup is partially reduced, thereby restricting the movement of the needle roller in the bearing direction and avoiding contact with the base end portion of the shaft portion. Is known (see, for example, Patent Document 1).

特開２００７−３０９３３８号公報JP 2007-309338 A

しかしながら、上記特許文献１に記載のニードル軸受では、軸受カップからのニードルころの脱落については考慮されておらず、従来技術と同様にカップカール部によってニードルころの軸方向移動を規制するに留まっていた。   However, in the needle bearing described in the above-mentioned Patent Document 1, the dropping of the needle roller from the bearing cup is not taken into consideration, and the axial movement of the needle roller is restricted by the cup curl portion as in the prior art. It was.

本発明は、前述した事情に鑑みてなされたものであり、その目的は、従来のニードル軸受と同程度の寸法でありながら、ニードルころの軸方向移動を確実に規制して、軸受カップからニードルころが脱落するのを防止することができると共に、カップカール部の機能を維持することができるニードル軸受及び自在継手を提供することにある。   The present invention has been made in view of the above-described circumstances, and the object thereof is to reliably regulate the axial movement of the needle roller from the bearing cup to the needle while having the same size as the conventional needle bearing. An object of the present invention is to provide a needle bearing and a universal joint that can prevent a roller from falling off and can maintain the function of a cup curl portion.

本発明の上記目的は、下記の構成により達成される。
（１）所定の軸部に複数のニードルころを介して回動可能に外嵌される有底円筒状の軸受カップを備え、軸受カップは、底部と、底部の外周縁から軸方向に延びる円筒部と、円筒部の軸方向端部から径方向内側に延びるカップカール部と、を有し、円筒部の内周面に設けられる軌道面と軸部との間に、複数のニードルころが転動可能に配置されるニードル軸受であって、軸受カップの軌道面とカップカール部との間に、ニードルころの軸方向の移動を規制する突起部が全周に亘って形成されることを特徴とするニードル軸受。
（２）十字状に形成される十字軸体と、十字軸体の各軸部に取り付けられるニードル軸受と、を備える自在継手であって、ニードル軸受として、（１）に記載のニードル軸受を使用することを特徴とする自在継手。 The above object of the present invention can be achieved by the following constitution.
(1) Provided with a bottomed cylindrical bearing cup that is rotatably fitted to a predetermined shaft portion through a plurality of needle rollers, and the bearing cup is a cylinder that extends in the axial direction from the outer periphery of the bottom portion. A plurality of needle rollers between the raceway surface provided on the inner peripheral surface of the cylindrical portion and the shaft portion. A needle bearing that is movably arranged, wherein a protrusion that restricts the axial movement of the needle roller is formed over the entire circumference between the raceway surface of the bearing cup and the cup curl portion. Needle bearing.
(2) A universal joint including a cross shaft formed in a cross shape and a needle bearing attached to each shaft portion of the cross shaft, wherein the needle bearing described in (1) is used as the needle bearing A universal joint characterized by

本発明によれば、軸受カップの軌道面とカップカール部との間に、ニードルころの軸方向の移動を規制する突起部が全周に亘って形成されるため、稼動時に軸方向荷重が過大になったとしても、突起部によりニードルころの軸方向移動を確実に規制して、軸受カップからニードルころが脱落するのを防止することができる。また、カップカール部によりニードルころの軸方向移動を規制する従来のものと比較して、軸受カップにかかる応力を抑制することができる。これにより、ニードル軸受及びこのニードル軸受を用いる自在継手の耐久性及び信頼性を向上することができる。   According to the present invention, since the protrusion for restricting the axial movement of the needle roller is formed over the entire circumference between the raceway surface of the bearing cup and the cup curl portion, the axial load is excessive during operation. Even if it becomes, it can control that the axial movement of a needle roller is reliably controlled by a projection part, and it can prevent that a needle roller falls from a bearing cup. Further, the stress applied to the bearing cup can be suppressed as compared with the conventional one in which the axial movement of the needle roller is restricted by the cup curl portion. Thereby, durability and reliability of a needle bearing and a universal joint using this needle bearing can be improved.

また、本発明によれば、突起部によりニードルころの軸方向移動を確実に規制するので、カップカール部の変形又は破損を防止することができる。これにより、稼動時の潤滑グリースの保持等のカップカール部の機能を維持することができる。   In addition, according to the present invention, since the axial movement of the needle roller is reliably restricted by the protrusion, deformation or breakage of the cup curl portion can be prevented. Thereby, the function of the cup curl portion such as holding of the lubricating grease during operation can be maintained.

さらに、本発明によれば、突起部は、例えば、軸受カップの円筒部を内側から底当てすると共に、円筒部の外側からを径方向内側に向けて型押し加工（プレス加工）を施すことにより形成することができるので、ニードル軸受の寸法又は形状等を変更することなく、また、部品点数の増加、製造工程の増加又は大幅な変更を伴うことなく、突起部を容易に設けることができる。   Furthermore, according to the present invention, for example, the protrusion is formed by applying a stamping process (pressing process) with the cylindrical part of the bearing cup being bottomed from the inner side and the outer side of the cylindrical part being directed radially inward. Since it can be formed, the protrusion can be easily provided without changing the size or shape of the needle bearing, and without increasing the number of parts, increasing the manufacturing process, or making significant changes.

本発明に係る自在継手の全体構成の一実施形態を説明する概略図である。It is the schematic explaining one Embodiment of the whole structure of the universal joint which concerns on this invention. 本発明に係るニードル軸受の一実施形態を説明する断面図である。It is sectional drawing explaining one Embodiment of the needle bearing which concerns on this invention. 図２に示す軸受カップの突起部の周辺の拡大断面図である。It is an expanded sectional view of the periphery of the protrusion part of the bearing cup shown in FIG. 従来の自在継手に用いられるニードル軸受を説明するための断面図である。It is sectional drawing for demonstrating the needle bearing used for the conventional universal joint.

以下、本発明に係るニードル軸受及び自在継手の一実施形態について、図面に基づいて詳細に説明する。   Hereinafter, an embodiment of a needle bearing and a universal joint according to the present invention will be described in detail based on the drawings.

本実施形態の自在継手１は、図１に示すように、十字状に形成される十字軸体１０と、この十字軸体１０の各軸部１１に取り付けられる４つのニードル軸受２０と、を備える。   As shown in FIG. 1, the universal joint 1 of the present embodiment includes a cross shaft body 10 formed in a cross shape, and four needle bearings 20 attached to each shaft portion 11 of the cross shaft body 10. .

ニードル軸受２０は、図２に示すように、十字軸体１０の各軸部１１に複数のニードルころ２７を介して回動可能に外嵌される軸受カップ２１を備える。なお、自在継手１は、例えば、自動車のステアリング装置のインターミディエイトシャフト等に組み込まれ、このインターミディエイトシャフトからの入力トルクを自在に他軸に伝達する。   As shown in FIG. 2, the needle bearing 20 includes a bearing cup 21 that is rotatably fitted to each shaft portion 11 of the cross shaft body 10 via a plurality of needle rollers 27. The universal joint 1 is incorporated in, for example, an intermediate shaft of an automobile steering apparatus, and freely transmits input torque from the intermediate shaft to another shaft.

軸受カップ２１は、例えば、金属板の型押し加工により有底円筒状に成形されており、底部２２と、底部２２の外周縁から軸部１１の基端部側に向かって軸方向に延びる円筒部２３と、円筒部２３の軸方向端部から径方向内側に延びるカールカップ部２４と、を有する。そして、この円筒部２３の内周面には、軌道面２３ａが形成されており、この軌道面２３ａと軸部１１との間に、複数のニードルころ２７が転動可能に全周に亘って配置されている。また、軸部１１と軸受カップ２１との間の軸受空間には潤滑グリースが充填される。なお、カールカップ部２４は、ニードル軸受２０の組立時のニードルころ２７の保持、及び稼動時の潤滑グリースの保持を行う機能を有する。   The bearing cup 21 is formed into a bottomed cylindrical shape by, for example, a metal plate embossing process, and extends in the axial direction from the outer periphery of the bottom 22 and the bottom 22 toward the proximal end of the shaft 11. And a curl cup portion 24 extending radially inward from the axial end of the cylindrical portion 23. A raceway surface 23a is formed on the inner peripheral surface of the cylindrical portion 23, and a plurality of needle rollers 27 can roll between the raceway surface 23a and the shaft portion 11 over the entire circumference. Has been placed. The bearing space between the shaft portion 11 and the bearing cup 21 is filled with lubricating grease. The curl cup portion 24 has a function of holding the needle roller 27 during assembly of the needle bearing 20 and holding lubricating grease during operation.

そして、図３に示すように、軸受カップ２１の軌道面２３ａとカールカップ部２４との間には、ニードルころ２７の軸方向の移動を規制する突起部２５が全周に亘って形成されている。   As shown in FIG. 3, a protrusion 25 that restricts the axial movement of the needle roller 27 is formed over the entire circumference between the raceway surface 23 a of the bearing cup 21 and the curl cup portion 24. Yes.

突起部２５は、例えば、軸受カップ２１の製造工程において、カールカップ部２４の折り曲げ加工の前に、円筒部２３を内側から底当てすると共に、円筒部２３の外側から径方向内側に向けて型押し加工（プレス加工）を施すことにより成形される。このため、ニードル軸受２０の寸法又は形状等を変更することなく、また、部品点数の増加、製造工程の増加又は大幅な変更を伴うことなく、突起部２５を容易に形成することができる。   For example, in the manufacturing process of the bearing cup 21, the projecting portion 25 is a mold in which the cylindrical portion 23 is bottomed from the inside before the curl cup portion 24 is bent and from the outside of the cylindrical portion 23 toward the radially inner side. It is formed by applying a pressing process (pressing process). For this reason, the protrusion 25 can be easily formed without changing the size or shape of the needle bearing 20, and without increasing the number of parts, increasing the manufacturing process, or making a significant change.

以上説明したように、本実施形態のニードル軸受２０によれば、軸受カップ２１の軌道面２３ａとカップカール部２４との間に、ニードルころ２７の軸方向の移動を規制する突起部２５が全周に亘って形成されるため、稼動時に軸方向荷重が過大になったとしても、突起部２５によりニードルころ２７の軸方向移動を確実に規制して、軸受カップ２１からニードルころ２７が脱落するのを防止することができる。また、カップカール部２４によりニードルころ２７の軸方向移動を規制する従来のものと比較して、軸受カップ２１にかかる応力を抑制することができる。これにより、ニードル軸受２０及びこのニードル軸受２０を用いる自在継手１の耐久性及び信頼性を向上することができる。   As described above, according to the needle bearing 20 of the present embodiment, the protrusion 25 that restricts the axial movement of the needle roller 27 is entirely between the raceway surface 23 a of the bearing cup 21 and the cup curl 24. Since it is formed over the circumference, even if the axial load becomes excessive during operation, the axial movement of the needle roller 27 is reliably regulated by the protrusion 25, and the needle roller 27 falls off from the bearing cup 21. Can be prevented. Further, the stress applied to the bearing cup 21 can be suppressed as compared with the conventional one in which the axial movement of the needle roller 27 is restricted by the cup curl portion 24. Thereby, the durability and reliability of the needle bearing 20 and the universal joint 1 using the needle bearing 20 can be improved.

また、突起部２５によりニードルころ２７の軸方向移動を確実に規制するので、カップカール部２４の変形又は破損を防止することができる。これにより、稼動時の潤滑グリースの保持等のカップカール部２４の機能を維持することができる。   Moreover, since the axial movement of the needle roller 27 is surely restricted by the protrusion 25, the cup curl 24 can be prevented from being deformed or damaged. Thereby, the function of the cup curl part 24, such as holding of the lubricating grease during operation, can be maintained.

なお、本発明は上記実施形態に例示したものに限定されるものではなく、本発明の要旨を逸脱しない範囲において適宜変更可能である。   In addition, this invention is not limited to what was illustrated to the said embodiment, In the range which does not deviate from the summary of this invention, it can change suitably.

次に、本発明のニードル軸受２０の実施例について説明する。   Next, an embodiment of the needle bearing 20 of the present invention will be described.

本発明（図２参照）と従来例（図４参照）とを比較するため、ニードルころ２７，５７から軸方向荷重を受ける際に発生する応力をそれぞれ有限要素法を用いて解析した。そして、解析の結果、本発明では、突起部２５に９０ＭＰａの応力がかかるのに対して、従来例では、円筒部とカップカール部との境界部分に２００ＭＰａの応力がかかることがわかった。   In order to compare the present invention (see FIG. 2) and the conventional example (see FIG. 4), the stress generated when receiving the axial load from the needle rollers 27 and 57 was analyzed using the finite element method. As a result of the analysis, it was found that, in the present invention, a stress of 90 MPa is applied to the protrusion 25, whereas in the conventional example, a stress of 200 MPa is applied to the boundary portion between the cylindrical portion and the cup curl portion.

このことにより、本発明では突起部２５でニードルころ２７からの軸方向荷重を受けるため、従来例と比較して軸受カップ２１にかかる応力を半分以下に低減できることがわかった。従って、本発明によれば、従来例よりも軸受カップ２１にかかる応力を低減することができるので、ニードルころ２７の軸方向移動を確実に規制することができ、軸受カップ２１からのニードルころ２７の脱落を防止することができるとわかった。   As a result, in the present invention, since the projection 25 receives the axial load from the needle roller 27, it was found that the stress applied to the bearing cup 21 can be reduced to less than half compared to the conventional example. Therefore, according to the present invention, since the stress applied to the bearing cup 21 can be reduced as compared with the conventional example, the axial movement of the needle roller 27 can be surely restricted, and the needle roller 27 from the bearing cup 21 can be regulated. It was found that can be prevented from falling off.

１ 自在継手
１０ 十字軸体
１１ 軸部
２０ ニードル軸受
２１ 軸受カップ
２２ 底部
２３ 円筒部
２３ａ 軌道面
２４ カップカール部
２５ 突起部
２７ ニードルころ DESCRIPTION OF SYMBOLS 1 Universal joint 10 Cross shaft 11 Shaft part 20 Needle bearing 21 Bearing cup 22 Bottom part 23 Cylindrical part 23a Track surface 24 Cup curl part 25 Protrusion part 27 Needle roller

Claims (2)

所定の軸部に複数のニードルころを介して回動可能に外嵌される有底円筒状の軸受カップを備え、
前記軸受カップは、底部と、前記底部の外周縁から軸方向に延びる円筒部と、前記円筒部の軸方向端部から径方向内側に延びるカップカール部と、を有し、
前記円筒部の内周面に設けられる軌道面と前記軸部との間に、前記複数のニードルころが転動可能に配置されるニードル軸受であって、
前記軸受カップの前記軌道面と前記カップカール部との間に、前記ニードルころの軸方向の移動を規制する突起部が全周に亘って形成されることを特徴とするニードル軸受。 A bottomed cylindrical bearing cup that is rotatably fitted to a predetermined shaft portion through a plurality of needle rollers,
The bearing cup includes a bottom portion, a cylindrical portion extending in an axial direction from an outer peripheral edge of the bottom portion, and a cup curl portion extending radially inward from an axial end portion of the cylindrical portion,
A needle bearing in which the plurality of needle rollers are arranged to roll between a raceway surface provided on an inner peripheral surface of the cylindrical portion and the shaft portion,
A needle bearing is provided between the raceway surface of the bearing cup and the cup curl portion, and a protrusion for restricting the axial movement of the needle roller is formed over the entire circumference. 十字状に形成される十字軸体と、前記十字軸体の各軸部に取り付けられるニードル軸受と、を備える自在継手であって、
前記ニードル軸受として、請求項１に記載のニードル軸受を使用することを特徴とする自在継手。 A universal joint comprising a cross shaft formed in a cross shape, and a needle bearing attached to each shaft portion of the cross shaft,
A universal joint according to claim 1, wherein the needle bearing according to claim 1 is used as the needle bearing.
JP2011029712A 2011-02-15 2011-02-15 Needle bearing and universal joint Withdrawn JP2012167753A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106979230A (en) * 2015-10-23 2017-07-25 株式会社捷太格特 Roller arrangement frame, roller check device and hull shape completely fill roller bearing manufacture method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106979230A (en) * 2015-10-23 2017-07-25 株式会社捷太格特 Roller arrangement frame, roller check device and hull shape completely fill roller bearing manufacture method
CN106979230B (en) * 2015-10-23 2020-03-13 株式会社捷太格特 Roller arrangement frame, roller inspection device, and method for manufacturing shell-shaped full complement roller bearing

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