JP2012072869A - Tapered roller bearing - Google Patents

Tapered roller bearing Download PDF

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Publication number
JP2012072869A
JP2012072869A JP2010219394A JP2010219394A JP2012072869A JP 2012072869 A JP2012072869 A JP 2012072869A JP 2010219394 A JP2010219394 A JP 2010219394A JP 2010219394 A JP2010219394 A JP 2010219394A JP 2012072869 A JP2012072869 A JP 2012072869A
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Japan
Prior art keywords
inner ring
tapered roller
ring
outer ring
raceway surface
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Pending
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JP2010219394A
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Japanese (ja)
Inventor
Hiroshi Jo
宏 城
Sei Sakamoto
聖 坂本
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JTEKT Corp
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JTEKT Corp
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Priority to JP2010219394A priority Critical patent/JP2012072869A/en
Publication of JP2012072869A publication Critical patent/JP2012072869A/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
    • 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
    • F16C33/54—Cages for rollers or needles made from wire, strips, or sheet metal
    • F16C33/541—Details of individual pockets, e.g. shape or roller retaining means
    • 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
    • F16C33/54—Cages for rollers or needles made from wire, strips, or sheet metal
    • F16C33/542—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal
    • F16C33/543—Cages for rollers or needles made from wire, strips, or sheet metal made from sheet metal from a single part
    • 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
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned
    • 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
    • F16C33/467—Details of individual pockets, e.g. shape or roller retaining means
    • F16C33/4682—Details of individual pockets, e.g. shape or roller retaining means of the end walls, e.g. interaction with the end faces of the rollers

Abstract

PROBLEM TO BE SOLVED: To provide a tapered roller bearing having a smaller parts count to reduce the cost, preventing seizure between an inner end face in the large diameter side of an inner ring and the end face of tapered rollers, and reducing the axial length of the tapered roller bearing.SOLUTION: The tapered roller bearing includes an outer ring 11, an inner ring 20 disposed in the inner circumferential side of the outer ring 11, a cage 30 disposed between the outer ring 11 and the inner ring 20 and having a plurality of pockets 34 in a circumferential direction, and a plurality of tapered rollers 40 disposed in the pockets 34. The bearing includes: an inner ring side raceway surface 21, where the tapered rollers 40 roll, formed on the outer circumference of the inner ring 20, wherein the inner ring side raceway surface 21 is a slope with respect to the axial line of the inner ring 20; and an inner end face 25 in a large diameter side to be in contact with end faces of the tapered rollers 40, formed in a large diameter side on the inner ring side raceway surface 21 of the inner ring 20. In the bearing, a flange 37 is integrally disposed in the cage 30, the flange extending radially inward from a side of each pocket 34 corresponding to the above inner end face 25 in the large diameter side to the vicinity of the inner end face in the large diameter side of the inner ring side raceway.

Description

本発明は、外輪と内輪間に、円すいころと保持器を配置した円すいころ軸受に関する。   The present invention relates to a tapered roller bearing in which a tapered roller and a cage are disposed between an outer ring and an inner ring.

従来の円すいころ軸受として、特許文献１に開示されたものがある。   As a conventional tapered roller bearing, there is one disclosed in Patent Document 1.

図４に示す円すいころ軸受１００は、主に外輪１０１と、外輪１０１の内周側に配置された内輪１０２と、外輪１０１と内輪１０２間に配置された複数の円すいころ１０３と、円すいころ１０３を円周上等間隔に保持する保持器１０４とからなり、外輪１０１の内周に外輪側軌道面１０１ａが形成され、内輪１０２の外周に内輪側軌道面１０２ａが形成され、内輪側軌道面１０２ａの軸方向両側には小径内側端面１０２ｂと大径側内側端面１０２ｃがそれぞれ形成されている。   The tapered roller bearing 100 shown in FIG. 4 mainly includes an outer ring 101, an inner ring 102 disposed on the inner peripheral side of the outer ring 101, a plurality of tapered rollers 103 disposed between the outer ring 101 and the inner ring 102, and a tapered roller 103. The outer ring side raceway surface 101a is formed on the inner circumference of the outer ring 101, the inner ring side raceway surface 102a is formed on the outer circumference of the inner ring 102, and the inner ring side raceway surface 102a. A small-diameter inner end face 102b and a large-diameter inner end face 102c are formed on both sides in the axial direction.

内輪１０２の外周に係止溝１０２dが形成され、この係止溝１０２ｄにシールド板１０５が嵌め込まれている。シールド板１０５は半径方向外方で円すいころ１０３側へ折れ曲がった押え部１０５ａを有し、この押え部１０５ａに前記保持器１０４が接触することにより、保持器１０４の半径方向の位置を規制している。シールド板１０５により、円すいころ１０３の小径側から流入した潤滑油を円すいころ１０３の大径側で保持する。大径側に貯まった余分な潤滑油は、シールド板１０５の貫通穴１０５ｂより円すいころ１０３と反対側に逃がされる。   A locking groove 102d is formed on the outer periphery of the inner ring 102, and a shield plate 105 is fitted in the locking groove 102d. The shield plate 105 has a presser portion 105a bent outward in the radial direction toward the tapered roller 103, and the retainer 104 comes into contact with the presser portion 105a to regulate the radial position of the retainer 104. Yes. The shield plate 105 holds the lubricating oil flowing from the small diameter side of the tapered roller 103 on the large diameter side of the tapered roller 103. Excess lubricating oil accumulated on the large diameter side is released to the side opposite to the tapered roller 103 from the through hole 105 b of the shield plate 105.

特開２００９−１４０４４号公報JP 2009-14044 A

保持器１０４とシールド板１０５が別部材で構成されているので、部品点数が多くコスト高となる。また、シールド板１０５を嵌め込む係止溝１０２ｄが必要なため、シールド板１０５を大径側内側端面１０２ｃに近づけることが出来ず、円すいころ軸受１００の軸方向長さが長くなる。本発明は、上記問題点を解決するためになされたものであり、その目的は、部品点数を少なくしてコストダウンを図る。また、内輪の大径側内側端面と円すいころの端面間の焼き付きを防止する。さらに、円すいころ軸受の軸方向長さを短くする。   Since the cage 104 and the shield plate 105 are formed of separate members, the number of parts is large and the cost is increased. Further, since the locking groove 102d for fitting the shield plate 105 is necessary, the shield plate 105 cannot be brought close to the large-diameter inner end surface 102c, and the axial length of the tapered roller bearing 100 becomes long. The present invention has been made in order to solve the above-described problems, and an object of the present invention is to reduce the number of parts and reduce the cost. Further, seizure between the inner diameter end surface of the inner ring and the end surface of the tapered roller is prevented. Furthermore, the axial length of the tapered roller bearing is shortened.

請求項１に記載の発明は、外輪と、前記外輪の内周側に配置される内輪と、前記外輪と前記内輪間に配置され円周方向に複数のポケット部を有する保持器と、前記ポケット部に配置される複数の円すいころと、少なくとも前記内輪と前記円すいころが接触する箇所を潤滑する潤滑油とを備え、前記外輪の内周に前記円すいころが転動する外輪側軌道面を形成し、前記内輪の外周に前記円すいころが転動する内輪側軌道面を形成し、前記内輪側軌道面は前記内輪の軸線に対して傾斜した面であり、前記内輪の前記内輪側軌道面の大径側に前記円すいころの端面に接触する大径側内側端面を設けた円すいころ軸受において、前記保持器に各ポケット部の前記大径側内側端面側から前記大径側内側端面近傍まで半径方向内方へ延びる鍔部を一体的に設けたものである。   The invention according to claim 1 is an outer ring, an inner ring disposed on an inner peripheral side of the outer ring, a cage disposed between the outer ring and the inner ring and having a plurality of pocket portions in a circumferential direction, and the pocket A plurality of tapered rollers disposed in a portion, and a lubricating oil that lubricates at least a portion where the inner ring and the tapered roller are in contact with each other, and an outer ring side raceway surface on which the tapered roller rolls is formed on an inner periphery of the outer ring. An inner ring side raceway surface on which the tapered roller rolls is formed on an outer periphery of the inner ring, and the inner ring side raceway surface is inclined with respect to an axis of the inner ring, and the inner ring side raceway surface of the inner ring is In a tapered roller bearing having a large-diameter inner end surface that contacts the end surface of the tapered roller on the large-diameter side, the cage has a radius from the large-diameter inner end surface side of each pocket portion to the vicinity of the large-diameter inner end surface. The heel that extends inward Those digits.

この構成によれば、保持器と鍔部が一体的に設けられているので、部品点数が少なくなり、コストダウンとなる。また、軸方向に移動する潤滑油を鍔部で受け止め、大径側内側端面と円すいころの端面間に潤滑油を供給できるので、全体の潤滑油を少なくして潤滑油による攪拌抵抗を少なくしても、大径側内側端面と円すいころの端面間の焼き付きを防止できる。   According to this configuration, since the cage and the collar portion are provided integrally, the number of parts is reduced and the cost is reduced. In addition, since the lubricating oil that moves in the axial direction is received by the flange and the lubricating oil can be supplied between the inner end face of the large diameter side and the end face of the tapered roller, the total lubricating oil is reduced and the stirring resistance by the lubricating oil is reduced. However, it is possible to prevent seizure between the inner end surface on the large diameter side and the end surface of the tapered roller.

請求項２に記載の発明は、請求項１に記載の円すいころ軸受において、前記鍔部は、ポケットの円周方向の全幅に渡って設けたものである。   According to a second aspect of the present invention, in the tapered roller bearing according to the first aspect, the flange is provided over the entire width of the pocket in the circumferential direction.

この構成によれば、軸方向に移動する潤滑油をより確実に鍔部で受け止め、大径側内側端面と円すいころの端面間に潤滑油をより確実に供給できる。また、ポケットの部分の材料の一部を使って鍔部を作るので、材料の無駄が少ない。   According to this configuration, the lubricating oil moving in the axial direction can be more reliably received by the flange portion, and the lubricating oil can be supplied more reliably between the large-diameter side inner end face and the end face of the tapered roller. In addition, since the buttock is made using part of the material of the pocket portion, there is little waste of material.

本発明によれば、保持器と鍔部が一体的に設けられているので、部品点数が少なくなり、コストダウンとなる。また、軸方向に移動する潤滑油を鍔部で受け止め、大径側内側端面と円すいころの端面間に潤滑油を供給できるので、全体の潤滑油を少なくして潤滑油によるころがり内輪側軌道面抵抗を少なくしても、大径側内側端面と円すいころの端面間の焼き付きを防止できる。さらに、鍔部を内輪ではなく、保持器に一体的に設けることで従来技術のようなシールド板を嵌め込む係止溝が不要になるので、円すいころ軸受の軸方向長さを短くできる。   According to the present invention, since the cage and the collar portion are integrally provided, the number of parts is reduced and the cost is reduced. Also, since the lubricating oil that moves in the axial direction is received by the flange and the lubricating oil can be supplied between the inner end surface of the large diameter side and the end surface of the tapered roller, the entire lubricating oil is reduced, and the rolling inner ring side raceway surface by the lubricating oil Even if the resistance is reduced, seizure between the inner end surface on the large diameter side and the end surface of the tapered roller can be prevented. Further, by providing the flange part integrally with the cage instead of the inner ring, the locking groove for fitting the shield plate as in the prior art becomes unnecessary, so that the axial length of the tapered roller bearing can be shortened.

本発明の実施形態における円すいころ軸受の全体断面図である。It is a whole sectional view of a tapered roller bearing in an embodiment of the present invention. 本発明の実施形態における保持器の外観図である。It is an external view of the holder | retainer in embodiment of this invention. 本発明の実施形態における内周から見た斜視図である。It is the perspective view seen from the inner periphery in embodiment of this invention. 従来の円すいころ軸受の断面図である。It is sectional drawing of the conventional tapered roller bearing.

本発明の一実施形態について、図１乃至図３を参酌しつつ説明する。図１は円すいころ軸受の全体断面図であり、図２は円すいころ軸受に使用される保持器の外観図であり、図３は内周から見た斜視図であり、内輪、外輪を省略している。   An embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is an overall sectional view of a tapered roller bearing, FIG. 2 is an external view of a cage used in the tapered roller bearing, and FIG. 3 is a perspective view seen from the inner periphery, omitting the inner ring and the outer ring. ing.

図１に示すように、円すいころ軸受１０は、リング状の外輪１１と、外輪１１の内周側に配置されるリング状の内輪２０と、外輪１１と内輪２０間に配置されるリング状の保持器３０と、保持器３０に保持される複数の円すいころ４０とからなっている。   As shown in FIG. 1, the tapered roller bearing 10 includes a ring-shaped outer ring 11, a ring-shaped inner ring 20 disposed on the inner peripheral side of the outer ring 11, and a ring-shaped ring disposed between the outer ring 11 and the inner ring 20. The cage 30 includes a plurality of tapered rollers 40 held by the cage 30.

前記外輪１１の内周には、外輪１１の軸線に対して傾斜した外輪側軌道面１２が形成されている。   On the inner periphery of the outer ring 11, an outer ring side raceway surface 12 that is inclined with respect to the axis of the outer ring 11 is formed.

前記内輪２０の外周には、内輪２０の軸線に対して傾斜した内輪側軌道面２１が形成され、内輪側軌道面２１を挟んで小径側に半径方向外方へ突出した小径側フランジ部２２が形成され、内輪側軌道面２１を挟んで大径側に半径方向外方へ突出した大径側フランジ部２３が形成されている。小径側フランジ部２２の円すいころ４０側の端面には、円すいころ４０の小径側端面に接触する小径側内側端面２４が形成されている。大径側フランジ部２３の円すいころ４０側の端面には、円すいころ４０の大径側端面に接触する大径側内側端面２５が形成されている。   An inner ring side raceway surface 21 that is inclined with respect to the axis of the inner ring 20 is formed on the outer periphery of the inner ring 20, and a small diameter side flange portion 22 that protrudes radially outward to the small diameter side across the inner ring side raceway surface 21. A large-diameter side flange portion 23 that is formed and protrudes radially outward on the large-diameter side across the inner ring-side raceway surface 21 is formed. A small-diameter inner end surface 24 that contacts the small-diameter end surface of the tapered roller 40 is formed on the end surface of the small-diameter flange portion 22 on the tapered roller 40 side. A large-diameter side inner end surface 25 that contacts the large-diameter side end surface of the tapered roller 40 is formed on the end surface of the large-diameter flange portion 23 on the tapered roller 40 side.

図２に示すように、前記保持器３０は、リング状の小径側環状部３１と、円すいころ４０に対し小径側環状部３１と反対側に配置されたリング状の大径側環状部３２と、小径側環状部３１と大径側環状部３２を繋ぐ柱部３３を主に備えている。柱部３３は、円周上等間隔に設けられており、２つの柱部３３間には小径側環状部３１と大径側環状部３２で軸方向に挟まれたポケット部３４が形成されている。各ポケット部３４に図１若しくは図３に記載の円すいころ４０が保持されている。   As shown in FIG. 2, the retainer 30 includes a ring-shaped small-diameter-side annular portion 31, and a ring-shaped large-diameter-side annular portion 32 disposed on the opposite side of the tapered roller 40 from the small-diameter-side annular portion 31. A column portion 33 that mainly connects the small-diameter-side annular portion 31 and the large-diameter-side annular portion 32 is mainly provided. The column portions 33 are provided at equal intervals on the circumference, and a pocket portion 34 sandwiched in the axial direction between the small diameter side annular portion 31 and the large diameter side annular portion 32 is formed between the two column portions 33. Yes. A tapered roller 40 shown in FIG. 1 or 3 is held in each pocket portion 34.

前記小径側環状部３１は、一端を半径方向内方へ折り曲げた内側折り曲げ部３６を有する。前記大径側環状部３２は、ポケット部３４毎にポケット部３４側を半径方向内方へ折り曲げた鍔部３７を有する。鍔部３７は、ポケット部３４の円周方向のほぼ全幅に渡って設けられている。鍔部３７は、ポケット部３４の四辺のうち、一辺を構成する。鍔部３７のポケット部３４側の面が、大径側内側端面２５の半径方向延長線上に位置するように鍔部３７が折り曲げられている。   The small-diameter-side annular portion 31 has an inner bent portion 36 having one end bent inward in the radial direction. The large-diameter side annular portion 32 has a flange portion 37 that is formed by bending the pocket portion 34 side inward in the radial direction for each pocket portion 34. The collar portion 37 is provided over substantially the entire width of the pocket portion 34 in the circumferential direction. The collar portion 37 constitutes one side of the four sides of the pocket portion 34. The flange portion 37 is bent so that the surface of the flange portion 37 on the pocket portion 34 side is positioned on the radial extension line of the large-diameter side inner end surface 25.

前記保持器３０は鉄の材質で主に作られており、プレス等によって所定の形状に加工される。打ち抜きのプレスによって、ポケット部３４の一部が打ち抜かれ、折り曲げのプレスによって、内側折り曲げ部３６と鍔部３７が半径方向内方へ折り曲げられる。   The cage 30 is mainly made of an iron material and is processed into a predetermined shape by a press or the like. A part of the pocket portion 34 is punched by the punching press, and the inner bent portion 36 and the flange portion 37 are bent radially inward by the bending press.

続いて、上述した構成にもとづいて動作について説明する。   Subsequently, the operation will be described based on the above-described configuration.

内輪２０に対して外輪１１が回転すると、円すいころ４０が外輪１１の外輪側軌道面１２上と内輪２０の内輪側軌道面２１上を転動し、円すいころ４０が円周方向に移動する。円すいころ４０の円周方向の移動により、保持器３０も外輪１１と同方向に回転する。   When the outer ring 11 rotates with respect to the inner ring 20, the tapered roller 40 rolls on the outer ring side raceway surface 12 of the outer ring 11 and the inner ring side raceway surface 21 of the inner ring 20, and the tapered roller 40 moves in the circumferential direction. Due to the circumferential movement of the tapered roller 40, the cage 30 also rotates in the same direction as the outer ring 11.

次に、このように内輪２０に対して外輪１１と保持器３０が回転した状態における潤滑油の流れについて説明する。外輪１１の外輪側軌道面１２が回転軸線に対して傾斜しているので、遠心力により外輪側軌道面１２に沿って小径側から大径側へ流れる。また外輪１１が回転しているので、潤滑油は外輪側軌道面１２に沿って外輪１１の回転方向と反対方向に流れる。すなわち、外輪側軌道面１２上を小径側から大径側へ流れながら、回転方向と反対方向に潤滑油が流れる。保持器３０の柱部３３も同様に回転軸線に対して傾斜しているので、潤滑油は遠心力により柱部３３の内周（内輪２０側の面）に沿って小径側から大径側へ流れる。また保持器３３が回転しているので、潤滑油は柱部３３の内周に沿って保持器３０の回転方向と反対方向に流れる。すなわち、柱部３３の内周面上を小径側から大径側へ流れながら、回転方向と反対方向に潤滑油が流れる。   Next, the flow of the lubricating oil in the state where the outer ring 11 and the cage 30 are rotated with respect to the inner ring 20 will be described. Since the outer ring side raceway surface 12 of the outer ring 11 is inclined with respect to the rotation axis, the outer ring side raceway surface 12 flows from the small diameter side to the large diameter side along the outer ring side raceway surface 12 by centrifugal force. Further, since the outer ring 11 is rotating, the lubricating oil flows along the outer ring side raceway surface 12 in a direction opposite to the rotation direction of the outer ring 11. That is, the lubricating oil flows in the direction opposite to the rotation direction while flowing from the small diameter side to the large diameter side on the outer ring side raceway surface 12. Similarly, since the column portion 33 of the cage 30 is also inclined with respect to the rotation axis, the lubricating oil flows from the small diameter side to the large diameter side along the inner periphery (surface on the inner ring 20 side) of the column portion 33 by centrifugal force. Flowing. Further, since the cage 33 is rotating, the lubricating oil flows along the inner circumference of the column portion 33 in the direction opposite to the rotation direction of the cage 30. That is, the lubricating oil flows in the direction opposite to the rotation direction while flowing from the small diameter side to the large diameter side on the inner peripheral surface of the column portion 33.

柱部３３からの一部の潤滑油、円すいころ４０からの一部の潤滑油が鍔部３７で受け止められ、鍔部３７に沿って円すいころ４０の大径側端面と大径側内側端面２５間に導かれる。このように、鍔部３７で受け止めて円すいころ４０の大径側端面と大径側内側端面２５間へ潤滑油を供給するので、円すいころ軸受１０全体の攪拌される潤滑油を少なくしても、潤滑油不足による焼き付きが発生する恐れがない。   A part of the lubricating oil from the column part 33 and a part of the lubricating oil from the tapered roller 40 are received by the flange part 37, and the large diameter side end face and the large diameter side inner end face 25 of the tapered roller 40 along the flange part 37. Led in between. Thus, since the lubricating oil is supplied between the large-diameter side end surface and the large-diameter side inner end surface 25 of the tapered roller 40 that is received by the flange portion 37, the amount of lubricating oil to be stirred in the entire tapered roller bearing 10 can be reduced. There is no risk of seizure due to lack of lubricating oil.

本発明はこうした実施形態に何等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、種々なる態様で実施し得ることは勿論である。   The present invention is not limited to these embodiments, and can of course be implemented in various modes without departing from the gist of the present invention.

上述した実施形態は、鍔部３７をポケット部３４の円周方向の全幅に渡って設けたが、全幅よりも小さい幅でも良い。   In the above-described embodiment, the collar portion 37 is provided over the entire width of the pocket portion 34 in the circumferential direction. However, the width may be smaller than the entire width.

さらに、上述した実施形態は、保持器３０の材質として、主に鉄系の材質からなるものを使用したが、金属製の材質として、ステンレスあるいは鉄の表面に亜鉛メッキしたものでも良い。保持器の材質として樹脂を使用した場合、鍔部を保持器の他の部分と一体形成する。   Further, in the above-described embodiment, a material made mainly of an iron-based material is used as the material of the cage 30, but a material made of a metal may be galvanized on the surface of stainless steel or iron. When resin is used as the material of the cage, the flange portion is integrally formed with the other portions of the cage.

１１：外輪、１２：外径側軌道面、２０：内輪、２１：内輪側軌道面、２５：大径側内側端面、３０：保持器、３４：ポケット部、３７：鍔部、４０：円すいころ DESCRIPTION OF SYMBOLS 11: Outer ring, 12: Outer diameter side raceway surface, 20: Inner ring, 21: Inner ring side raceway surface, 25: Large diameter side inner end face, 30: Retainer, 34: Pocket part, 37: Gutter part, 40: Tapered roller

Claims (2)

外輪と、前記外輪の内周側に配置される内輪と、前記外輪と前記内輪間に配置され円周方向に複数のポケット部を有する保持器と、前記ポケット部に配置される複数の円すいころと、少なくとも前記内輪と前記円すいころが接触する箇所を潤滑する潤滑油とを備え、前記外輪の内周に前記円すいころが転動する外輪側軌道面を形成し、前記内輪の外周に前記円すいころが転動する内輪側軌道面を形成し、前記内輪側軌道面は前記内輪の軸線に対して傾斜した面であり、前記内輪の前記内輪側軌道面の大径側に前記円すいころの端面に接触する大径側内側端面を設けた円すいころ軸受において、前記保持器に各ポケット部の前記大径側内側端面側から前記大径側内側端面近傍まで半径方向内方へ延びる鍔部を一体的に設けたことを特徴とする円すいころ軸受。   An outer ring, an inner ring disposed on the inner peripheral side of the outer ring, a cage disposed between the outer ring and the inner ring and having a plurality of pocket portions in the circumferential direction, and a plurality of tapered rollers disposed in the pocket portions And at least a lubricating oil that lubricates a portion where the inner ring and the tapered roller are in contact with each other, forming an outer ring-side raceway surface on which the tapered roller rolls on the inner circumference of the outer ring, and the conical section on the outer circumference of the inner ring An inner ring side raceway surface on which the roller rolls is formed, the inner ring side raceway surface is a surface inclined with respect to the axis of the inner ring, and the end surface of the tapered roller on the large diameter side of the inner ring side raceway surface of the inner ring In the tapered roller bearing provided with a large-diameter inner end surface that contacts the flange, the cage is integrated with a flange portion extending radially inward from the large-diameter inner end surface side of each pocket portion to the vicinity of the large-diameter inner end surface. Circle characterized by the provision Tapered roller bearings. 前記鍔部は、ポケットの円周方向の全幅に渡って設けたことを特徴とする請求項１に記載の円すいころ軸受。   The tapered roller bearing according to claim 1, wherein the flange portion is provided over the entire width of the pocket in the circumferential direction.
JP2010219394A 2010-09-29 2010-09-29 Tapered roller bearing Pending JP2012072869A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160047418A1 (en) * 2013-03-25 2016-02-18 Nabtesco Corporation Gear transmission

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007270851A (en) * 2006-03-30 2007-10-18 Jtekt Corp Tapered roller bearing
JP2009287593A (en) * 2008-05-27 2009-12-10 Jtekt Corp Tapered roller bearing

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007270851A (en) * 2006-03-30 2007-10-18 Jtekt Corp Tapered roller bearing
JP2009287593A (en) * 2008-05-27 2009-12-10 Jtekt Corp Tapered roller bearing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160047418A1 (en) * 2013-03-25 2016-02-18 Nabtesco Corporation Gear transmission
US9689430B2 (en) * 2013-03-25 2017-06-27 Nabtesco Corporation Gear transmission

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