JP6107023B2 - Roller bearing - Google Patents

Roller bearing Download PDF

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Publication number
JP6107023B2
JP6107023B2 JP2012210483A JP2012210483A JP6107023B2 JP 6107023 B2 JP6107023 B2 JP 6107023B2 JP 2012210483 A JP2012210483 A JP 2012210483A JP 2012210483 A JP2012210483 A JP 2012210483A JP 6107023 B2 JP6107023 B2 JP 6107023B2
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Prior art keywords
roller bearing
inner ring
rollers
diameter
raceway surface
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JP2014066269A (en
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晋也 松田
晋也 松田
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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
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/004—Electro-dynamic machines, e.g. motors, generators, actuators
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
    • 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
    • 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
    • F16C19/24—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 radial load mainly
    • F16C19/26—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 radial load mainly with a single row of rollers
    • 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
    • F16C2233/00—Monitoring condition, e.g. temperature, load, vibration

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

Description

本発明は、発電機を使用したころ軸受に関する。   The present invention relates to a roller bearing using a generator.

例えば、図６（特許文献１）に示すようなころ軸受は、外輪１１０および内輪１２０上を転動するころ１３０を保持器１４０のピン１４２で回転可能に支持している。保持器１４０は、軸方向両側に配置されたリング状の第１環状部材１４１およびリング状の第２環状部材１４３と、第１環状部材１４１および第２環状部材１４３を連結するピン１４２とからなっている。   For example, in a roller bearing as shown in FIG. 6 (Patent Document 1), rollers 130 that roll on the outer ring 110 and the inner ring 120 are rotatably supported by pins 142 of the cage 140. The cage 140 includes a ring-shaped first annular member 141 and a ring-shaped second annular member 143 that are disposed on both sides in the axial direction, and a pin 142 that connects the first annular member 141 and the second annular member 143. ing.

ピン１４２の一端はおねじ部１４２ａを介して第２環状部材１４３にねじ連結され、ピン１４２の他端は第１環状部材１４１に嵌合固定されている。第２環状部材１４３には、温度センサー１５２およびバッテリー１５１が取付けられている。ピン１４２には、円周方向の両側に溝１４２ｃが形成され、両側の溝１４２ｃは孔１４２ｂを介して互いに連通している。一方の溝１４２ｃに沿って電線１５０が配設され、孔１４２ｂを通して他方の溝１４２ｃに沿って電線１５０が配設されることによってコイルが構成されている。   One end of the pin 142 is screwed to the second annular member 143 via the external thread 142a, and the other end of the pin 142 is fitted and fixed to the first annular member 141. A temperature sensor 152 and a battery 151 are attached to the second annular member 143. In the pin 142, grooves 142c are formed on both sides in the circumferential direction, and the grooves 142c on both sides communicate with each other through holes 142b. The electric wire 150 is disposed along one groove 142c, and the electric wire 150 is disposed along the other groove 142c through the hole 142b, thereby forming a coil.

外輪１１０に対し内輪１２０が回転すると、ころ１３０は外輪１１０上を転動しながら保持器１４０とともに内輪１２０と同方向に移動する。コイル回りに永久磁石１５３が回転することによって、コイルから誘導電気が発生し、バッテリー１５１に充電される。バッテリー１５１の電気を使って温度センサー１５２が作動する。   When the inner ring 120 rotates with respect to the outer ring 110, the roller 130 moves in the same direction as the inner ring 120 together with the cage 140 while rolling on the outer ring 110. As the permanent magnet 153 rotates around the coil, induction electricity is generated from the coil and the battery 151 is charged. The temperature sensor 152 is activated using the electricity of the battery 151.

特開２０１１−１０６５８０号公報JP 2011-106580 A

前記ころ軸受は、風力発電に使用される大型のものであり、ころ１３０はゆっくり回転する。このため、十分な発電量が得られない問題があった。また、ころ１３０内に永久磁石およびコイルを組み込まなければならないため、永久磁石およびコイルの大きさに制約があり、設計の自由度が少ない問題があった。本発明は、上述した問題点を解決するためになされたもので、その目的とするところは、十分な発電量が得られ、永久磁石およびコイルの設計の自由度が大きいころ軸受を提供する。   The roller bearing is a large one used for wind power generation, and the roller 130 rotates slowly. For this reason, there was a problem that a sufficient amount of power generation could not be obtained. Further, since the permanent magnet and the coil must be incorporated in the roller 130, there is a problem that the size of the permanent magnet and the coil is limited, and the degree of freedom in design is small. The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a roller bearing that can obtain a sufficient amount of power generation and has a high degree of freedom in designing permanent magnets and coils.

請求項１に記載の発明は、内周に外輪側軌道面を形成した外輪と、外周に内輪側軌道面を形成した内輪と、前記外輪側軌道面および前記内輪側軌道面を転動し円周方向に複数配設されたころと、複数の前記ころを回転可能に保持した保持器とからなり、前記保持器に計測装置を取付けたころ軸受において、発電機は、回転部と、固定部とからなり、前記固定部に対して前記回転部を回転させることによって電気を発生させるものであり、前記固定部を複数の前記ころ間で前記保持器に取付けることにより、前記回転部を互いに隣り合う二つの前記ころの外周に同時に回転接触させ、前記回転接触する前記回転部の外周にゴム材からなる回転接触部を形成し、前記回転接触部の外径を前記ころの外径よりも小さくし、前記発電機の電気を前記計測装置に供給するようにしたことを特徴とするものである。 According to the first aspect of the present invention, an outer ring having an outer ring side raceway surface formed on the inner periphery, an inner ring having an inner ring side raceway surface formed on the outer periphery, the outer ring side raceway surface and the inner ring side raceway surface rolling In a roller bearing comprising a plurality of rollers arranged in the circumferential direction and a cage that rotatably holds the plurality of rollers, and a measuring device attached to the cage, the generator includes a rotating portion and a fixed portion. Electricity is generated by rotating the rotating part with respect to the fixed part, and the rotating part is adjacent to each other by attaching the fixed part to the cage between the plurality of rollers. A rotating contact portion made of a rubber material is formed on the outer periphery of the rotating portion that is in rotational contact with the outer periphery of two matching rollers at the same time, and the outer diameter of the rotating contact portion is smaller than the outer diameter of the roller. The electricity of the generator It is characterized in that it has to be supplied to the device.

本発明によれば、ころの回転数よりも回転部の回転数の方が大きくなるため十分な発電量が得られる。また複数のころ間に発電機が配設されるため、永久磁石およびコイルの設計の自由度が大きいころ軸受を提供することができる。   According to the present invention, since the rotational speed of the rotating portion is larger than the rotational speed of the rollers, a sufficient amount of power generation can be obtained. Further, since the generator is disposed between the plurality of rollers, it is possible to provide a roller bearing having a large degree of freedom in designing permanent magnets and coils.

本発明の一実施形態における円すいころ軸受の断面図である。It is sectional drawing of the tapered roller bearing in one Embodiment of this invention. 本発明の一実施形態における円すいころ軸受の図１の別の角度位置での断面図である。It is sectional drawing in the other angular position of FIG. 1 of the tapered roller bearing in one Embodiment of this invention. 本発明の一実施形態における図２のＡ−Ａ線矢視図である。It is the AA arrow directional view of FIG. 2 in one Embodiment of this invention. 本発明の一実施形態における図２のＢ矢視図である。It is a B arrow line view of FIG. 2 in one Embodiment of this invention. 本発明の一実施形態における発電機の断面図である。It is sectional drawing of the generator in one Embodiment of this invention. 従来のころ軸受の断面図である。It is sectional drawing of the conventional roller bearing.

本発明の一実施形態について、図１乃至図５を参酌しつつ説明する。図１は、円すいころ軸受の断面図、図２は、円すいころ軸受の図１の別の角度位置での断面図、図３は、図２のＡ−Ａ線矢視図、図４は、図２のＢ矢視図、図５は、発電機の断面図である。   An embodiment of the present invention will be described with reference to FIGS. 1 is a cross-sectional view of a tapered roller bearing, FIG. 2 is a cross-sectional view of the tapered roller bearing at another angular position in FIG. 1, FIG. 3 is a cross-sectional view taken along the line AA in FIG. 2 is a cross-sectional view of the generator.

図１および図２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および内輪２０間に配置されるリング状の保持器４０と、保持器４０の後述するピン６２に回転可能に支持される複数の円すいころ３０とからなっている。前記外輪１１、内輪２０、保持器４０、円すいころ３０は、いずれも金属製の材料で構成され、特に鉄系の材料がよく使われる。   As shown in FIGS. 1 and 2, the tapered roller bearing 10 is disposed between a ring-shaped outer ring 11, a ring-shaped inner ring 20 disposed on the inner peripheral side of the outer ring 11, and the outer ring 11 and the inner ring 20. It comprises a ring-shaped cage 40 and a plurality of tapered rollers 30 that are rotatably supported by pins 62 (to be described later) of the cage 40. The outer ring 11, the inner ring 20, the retainer 40, and the tapered roller 30 are all made of a metal material, and particularly, an iron-based material is often used.

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２３が形成されている。また内輪２０の外周には、内輪側軌道面２３を挟んで大径側に半径方向外方へ突出した大径側端部２５が形成され、内輪側軌道面２３を挟んで小径側に半径方向外方へ突出した小径側端部２１が形成されている。   On the outer periphery of the inner ring 20, an inner ring-side raceway surface 23 that is inclined with respect to the axis of the inner ring 20 is formed. A large-diameter end 25 is formed on the outer periphery of the inner ring 20 so as to protrude radially outward on the large diameter side with the inner ring side raceway surface 23 interposed therebetween. A small-diameter end 21 projecting outward is formed.

大径側端部２５の円すいころ３０側の端面には、円すいころ３０の大径側端面に接触する大径側内側端面２４が形成されている。小径側端部２１の円すいころ３０側の端面には、円すいころ３０の小径側端面に接触可能な小径側内側端面２２が形成されている。   A large-diameter side inner end surface 24 that contacts the large-diameter side end surface of the tapered roller 30 is formed on the end surface of the large-diameter side end portion 25 on the tapered roller 30 side. A small-diameter side inner end surface 22 that can contact the small-diameter side end surface of the tapered roller 30 is formed on the end surface of the small-diameter side end portion 21 on the tapered roller 30 side.

前記保持器４０は、リング状で小径の小径環状部材５０と、リング状で大径の大径環状部材５５と、前記小径環状部材５０および前記大径環状部材５５を連結するピン６０とからなっている。   The cage 40 includes a ring-shaped small-diameter small-diameter member 50, a ring-shaped large-diameter large-diameter annular member 55, and a pin 60 that connects the small-diameter annular member 50 and the large-diameter annular member 55. ing.

前記小径環状部材５０には、ピン６０を挿通する挿通穴５１が貫通して形成されている。前記大径環状部材５５には、ピン６０を螺合する固定ねじ穴５６が貫通して形成されている。固定ねじ穴５６は、保持器４０の円周方向において挿通穴５１に対応する位置に形成され、固定ねじ穴５６および挿通穴５１は円周方向に等間隔に複数形成されている。   The small diameter annular member 50 is formed with an insertion hole 51 through which the pin 60 is inserted. The large-diameter annular member 55 is formed with a fixing screw hole 56 through which the pin 60 is screwed. The fixing screw holes 56 are formed at positions corresponding to the insertion holes 51 in the circumferential direction of the cage 40, and a plurality of the fixing screw holes 56 and the insertion holes 51 are formed at equal intervals in the circumferential direction.

図１に示すように前記ピン６０には、一端に工具が回転方向に係合する係合溝６１が形成され、他端に固定ねじ穴５６に螺合するおねじ６３が形成されている。ピン６０には、係合溝６１からおねじ６３にかけてピン穴３１に摺接する嵌合部６２が形成されている。挿通穴５１およびピン６０間には、メカニカルロック７０が介挿され、このメカニカルロック７０によってピン６０は小径環状部材５０に固定される。ピン６０は内輪２０の円周方向に等間隔に複数設けられ、各ピン６０は円すいころ３０の後述するピン穴３１に挿通されている。これによって、各ピン６０に円すいころ３０が回転可能に支持されている。   As shown in FIG. 1, the pin 60 is formed with an engaging groove 61 that engages the tool in the rotational direction at one end and a male screw 63 that is screwed into the fixing screw hole 56 at the other end. The pin 60 is formed with a fitting portion 62 slidably contacting the pin hole 31 from the engaging groove 61 to the male screw 63. A mechanical lock 70 is inserted between the insertion hole 51 and the pin 60, and the pin 60 is fixed to the small-diameter annular member 50 by the mechanical lock 70. A plurality of pins 60 are provided at equal intervals in the circumferential direction of the inner ring 20, and each pin 60 is inserted into a pin hole 31 described later of the tapered roller 30. Thereby, the tapered roller 30 is rotatably supported by each pin 60.

前記円すいころ３０は、円すい形状から頂部を除去した形状を有するもので、前記外輪側軌道面１２と前記内輪側軌道面２３上を転動する転動面と、小径側の端面に形成された小径側端面と、大径側の端面に形成された大径側端面を有する。円すいころ３０には、ピン６０を挿通するピン穴３１が軸方向に形成されている。   The tapered roller 30 has a shape obtained by removing a top portion from a conical shape, and is formed on a rolling surface that rolls on the outer ring side raceway surface 12 and the inner ring side raceway surface 23, and an end surface on the small diameter side. It has a small diameter side end surface and a large diameter side end surface formed on the large diameter side end surface. The tapered roller 30 is formed with a pin hole 31 through which the pin 60 is inserted in the axial direction.

図２および図３に示すように発電機８０は、ハブ型発電機であり、自転車の前輪のハブによく使われている。今回、これを円すいころ軸受１０に流用した。発電機８０は、円すいころ軸受１０の円周方向において、１箇所だけ配置され、しかも一対の円すいころ３０間に配置される。図５に示すように発電機８０は、円筒状のハウジング８１と、ハウジング８１の内周に配置された一対のアンギュラ玉軸受８５と、一対のアンギュラ玉軸受８５を介して回転可能に軸承された円柱形状の固定軸８６と、ハウジング８１の内周に配置された永久磁石８２と、固定軸８６の外周に配置されたヨーク８３およびコイル８４とからなっている。   As shown in FIGS. 2 and 3, the generator 80 is a hub-type generator, and is often used for a hub of a front wheel of a bicycle. This time, this was diverted to the tapered roller bearing 10. The generator 80 is disposed at only one place in the circumferential direction of the tapered roller bearing 10, and is disposed between the pair of tapered rollers 30. As shown in FIG. 5, the generator 80 is rotatably supported via a cylindrical housing 81, a pair of angular ball bearings 85 disposed on the inner periphery of the housing 81, and a pair of angular ball bearings 85. A cylindrical fixed shaft 86, a permanent magnet 82 disposed on the inner periphery of the housing 81, and a yoke 83 and a coil 84 disposed on the outer periphery of the fixed shaft 86.

ハウジング８１は、カップ形状の円筒部８１ａと、円筒部８１ａの一端に螺合される蓋部８１ｂとからなる。円筒部８１ａの外周に一対のフランジ部８３ｃが形成され、一方のフランジ部８３ｃの外周にゴムが加硫接着され、回転接触部８３ｄが形成されている。この回転接触部８３ｄが円すいころ３０の外周に回転接触する。   The housing 81 includes a cup-shaped cylindrical portion 81a and a lid portion 81b that is screwed to one end of the cylindrical portion 81a. A pair of flange portions 83c is formed on the outer periphery of the cylindrical portion 81a, and rubber is vulcanized and bonded to the outer periphery of one flange portion 83c to form a rotating contact portion 83d. The rotational contact portion 83d is in rotational contact with the outer periphery of the tapered roller 30.

永久磁石８２は、円筒形状を有し、Ｓ極およびＮ極が円周方向に交互に配置されている。円筒部８１ａの内周に永久磁石８２が嵌合され、円筒部８１ａの一端に蓋部８１ｂが螺合されることによって、永久磁石８１の円筒部８１ａに対する軸方向位置が拘束される。   The permanent magnet 82 has a cylindrical shape, and S poles and N poles are alternately arranged in the circumferential direction. The permanent magnet 82 is fitted to the inner periphery of the cylindrical portion 81a, and the lid portion 81b is screwed to one end of the cylindrical portion 81a, thereby restraining the axial position of the permanent magnet 81 with respect to the cylindrical portion 81a.

アンギュラ玉軸受８５は、ハウジング８１の内周に嵌合される外輪８５ａと、固定軸８６の外周に嵌合される内輪８５ｂと、外輪８５ａおよび内輪８５ｂ上を転動する玉８５ｃとからなる。   The angular ball bearing 85 includes an outer ring 85a fitted to the inner circumference of the housing 81, an inner ring 85b fitted to the outer circumference of the fixed shaft 86, and a ball 85c that rolls on the outer ring 85a and the inner ring 85b.

固定軸８６の外周には、軸方向両端におねじ部８６ｄが形成され、軸方向中央にセレーション部８６ｂが形成され、セレーション部８６ｂの軸方向両側に環状の環状溝８６ａが形成され、おねじ部８６ｄおよび環状溝８６ａ間に嵌合部が形成されている。   On the outer periphery of the fixed shaft 86, thread portions 86d are formed at both axial ends, serration portions 86b are formed at the center in the axial direction, and annular annular grooves 86a are formed on both axial sides of the serration portions 86b. A fitting portion is formed between the portion 86d and the annular groove 86a.

おねじ部８６ｄに、ワッシャ８８が嵌合され、固定ナット８９が螺合されている。一対の固定ナット８９をおねじ部８６ｄに螺合させることによって、ハウジング８１に対する固定軸８６の軸方向移動を拘束している。セレーション部８６ｂにはヨーク８３がセレーション嵌合されている。一対の環状溝８６ａに一対の止めリング８７が嵌め込まれ、ヨーク８３の固定軸８６に対する軸方向移動を拘束している。   A washer 88 is fitted to the male screw portion 86d, and a fixing nut 89 is screwed. The axial movement of the fixed shaft 86 relative to the housing 81 is restrained by screwing the pair of fixed nuts 89 into the external thread portion 86d. A yoke 83 is serrated to the serration portion 86b. A pair of retaining rings 87 are fitted into the pair of annular grooves 86a to restrain the axial movement of the yoke 83 relative to the fixed shaft 86.

ヨーク８３は、コイル８４を取囲むように配置され、図５の右側に配置された右側ヨーク部８３ａと、左側に配置された左側ヨーク部８３ｂとからなる。右側ヨーク部８３ａおよび左側ヨーク部８３ｂは、外径方向に延びる円盤部と、円盤部の内周より軸方向に延びる内筒部と、円盤部の外周より軸方向に延びる外筒部とからなる。内筒部の内周には、セレーション部８６ｂに嵌合されるセレーション部が形成されている。外筒部には、円周方向に等間隔にスリットが形成され、スリットの一端は開口している。スリットは、他端、すなわち円盤部に向かって幅が狭くなるように形成されている。ヨーク８３に対し永久磁石８２を円周方向に接近離間させることによって、ヨーク８３に磁力線が発生し、コイル８４に誘導電流が発生するようになっている。   The yoke 83 is disposed so as to surround the coil 84, and includes a right yoke portion 83a disposed on the right side in FIG. 5 and a left yoke portion 83b disposed on the left side. The right yoke part 83a and the left yoke part 83b are composed of a disk part extending in the outer diameter direction, an inner cylinder part extending in the axial direction from the inner periphery of the disk part, and an outer cylinder part extending in the axial direction from the outer periphery of the disk part. . A serration portion fitted to the serration portion 86b is formed on the inner periphery of the inner cylinder portion. In the outer cylinder portion, slits are formed at equal intervals in the circumferential direction, and one end of the slit is opened. The slit is formed so that the width becomes narrower toward the other end, that is, the disk portion. By moving the permanent magnet 82 toward and away from the yoke 83 in the circumferential direction, a magnetic field line is generated in the yoke 83 and an induced current is generated in the coil 84.

コイル８４は、円周方向に独立した少なくとも３つの独立したコイル部とからなっている。各コイル部から１２０度位相がずれた交流電流が発生するようになっている。   The coil 84 includes at least three independent coil portions that are independent in the circumferential direction. An alternating current that is 120 degrees out of phase is generated from each coil portion.

固定軸８６の一端には第１支持軸７２が同軸連結され、固定軸８６の他端には第２支持軸７７が同軸連結されている。このために、第１支持軸７２の他端および第２支持軸７７の一端におねじ部７２ａおよびおねじ部７７ａが形成され、おねじ部７２ａおよびおねじ部８６ｄに連結ナット７４が螺合され、おねじ部７７ａおよびおねじ部８６ｄに連結ナット７５が螺合され、連結ナット７４の緩みを防止する固定ナット７３がおねじ部７２ａに螺合され、連結ナット７５の緩みを防止する固定ナット７６がおねじ部７７ａに螺合されている。   A first support shaft 72 is coaxially connected to one end of the fixed shaft 86, and a second support shaft 77 is coaxially connected to the other end of the fixed shaft 86. For this purpose, a threaded portion 72a and a male threaded portion 77a are formed at the other end of the first support shaft 72 and one end of the second support shaft 77, and the connecting nut 74 is screwed to the male threaded portion 72a and the male threaded portion 86d. Then, the connecting nut 75 is screwed to the male screw portion 77a and the male screw portion 86d, and the fixing nut 73 that prevents the connecting nut 74 from loosening is screwed to the male screw portion 72a, and the connecting nut 75 is fixed to prevent the connecting nut 75 from loosening. A nut 76 is screwed into the external thread 77a.

第１支持軸７２は小径環状部材５０に固定支持され、第２支持軸７７は大径環状部材５５に固定支持されている。このために、第１支持軸７２を小径環状部材５０の支持穴５３に挿通させ、第１支持軸７２の一端のおねじ部に固定ナット７１を螺合させ、小径環状部材５０の収納穴５２の端面に固定ナット７１を当接させ、第２支持軸７７を大径環状部材５５の支持穴５７に挿通させ、第２支持軸７７の他端のおねじ部に固定ナット７８を螺合させ、大径環状部材５５の収納穴５８の端面に固定ナット７８を当接させている。   The first support shaft 72 is fixedly supported by the small-diameter annular member 50, and the second support shaft 77 is fixedly supported by the large-diameter annular member 55. For this purpose, the first support shaft 72 is inserted into the support hole 53 of the small-diameter annular member 50, the fixing nut 71 is screwed into the male thread portion of one end of the first support shaft 72, and the storage hole 52 of the small-diameter annular member 50 is inserted. The fixing nut 71 is brought into contact with the end surface of the second supporting shaft 77, the second supporting shaft 77 is inserted into the supporting hole 57 of the large-diameter annular member 55, and the fixing nut 78 is screwed into the other threaded portion of the second supporting shaft 77. The fixing nut 78 is brought into contact with the end face of the housing hole 58 of the large-diameter annular member 55.

固定軸８６および第２支持軸７７には、３つの独立したコイル部から出ている動力線８４ａを通す電線通路８６ｅおよび電線通路７７ｂが形成されている。動力線８４ａは、第２支持軸７７の他端より出て、後述するコンバータ９６に接続されている。   The fixed shaft 86 and the second support shaft 77 are formed with an electric wire passage 86e and an electric wire passage 77b through which a power line 84a extending from three independent coil portions is passed. The power line 84a exits from the other end of the second support shaft 77 and is connected to a converter 96 described later.

図２および図４に示すようにコンバータ９６は、大径環状部材５５に取付けられ、交流電流を直流電流に変換する整流回路９７と、回転数に応じて変動する電圧を一定電圧にする電圧調整回路９８とからなっている。コンバータ９６は、変動する交流電圧を、一定の直流電圧に変換する機能を有する。   As shown in FIGS. 2 and 4, the converter 96 is attached to the large-diameter annular member 55, and a rectifier circuit 97 that converts an alternating current into a direct current, and a voltage adjustment that makes a voltage that varies according to the number of rotations a constant voltage. A circuit 98 is included. The converter 96 has a function of converting a varying AC voltage into a constant DC voltage.

複数あるピン６０のうち、数本だけ歪ゲージ９０を取付ける。図１に示すようにピン６０には、軸方向の３箇所、円周方向の４箇所に歪ゲージ９０が取付けられている。ピン６０には、径方向に穿孔された径方向穴６５と、軸方向に穿孔された軸方向穴６６とが形成されている。径方向穴６５および軸方向穴６６は互いに連通し、軸方向穴６６の他端はピン６０の他端に開口している。歪ゲージ９０の信号線９１は、径方向穴６５および軸方向穴６６に挿通され、ピン６０の他端より出て、後述するデータロガー９２に接続されている。   Of the plurality of pins 60, only a few strain gauges 90 are attached. As shown in FIG. 1, the strain gauge 90 is attached to the pin 60 at three locations in the axial direction and at four locations in the circumferential direction. The pin 60 is formed with a radial hole 65 drilled in the radial direction and an axial hole 66 drilled in the axial direction. The radial hole 65 and the axial hole 66 communicate with each other, and the other end of the axial hole 66 opens at the other end of the pin 60. A signal line 91 of the strain gauge 90 is inserted into the radial hole 65 and the axial hole 66, exits from the other end of the pin 60, and is connected to a data logger 92 described later.

図１および図４に示すようにデータロガー９２は、大径環状部材５５に取付けられ、画面９３と、処理回路９４と、バッテリー９５とからなっている。データロガー９２は、歪ゲージ９０からの信号を時系列で記録する機能を有する。   As shown in FIGS. 1 and 4, the data logger 92 is attached to the large-diameter annular member 55 and includes a screen 93, a processing circuit 94, and a battery 95. The data logger 92 has a function of recording signals from the strain gauge 90 in time series.

続いて上述した構成にもとづいて、円すいころ軸受１０の作用について説明する。   Next, the operation of the tapered roller bearing 10 will be described based on the configuration described above.

外輪１１に対して内輪２０が回転すると、円すいころ３０は外輪側軌道面１２上と内輪側軌道面２３上を転動しながら内輪２０の回転方向と同方向に移動する。円すいころ３０はピン６０によって回転可能に支持され、ピン６０同士を小径環状部材５０および前記大径環状部材５５を介して内輪２０の円周方向に連結しているため、複数の円すいころ３０は、一斉に内輪２０の回転方向と同方向に移動する。保持器４０も内輪２０と同方向に回転する。   When the inner ring 20 rotates with respect to the outer ring 11, the tapered rollers 30 move in the same direction as the rotation direction of the inner ring 20 while rolling on the outer ring side raceway surface 12 and the inner ring side raceway surface 23. The tapered rollers 30 are rotatably supported by pins 60, and the pins 60 are connected to each other in the circumferential direction of the inner ring 20 via the small-diameter annular member 50 and the large-diameter annular member 55. , And simultaneously move in the same direction as the rotation direction of the inner ring 20. The cage 40 also rotates in the same direction as the inner ring 20.

内輪２０に軸方向のスラスト力が作用すると、円すいころ３０の大径側端面が大径側内側端面２４に接触し、さらに円すいころ３０を介して外輪１１に前記スラスト力が作用する。   When an axial thrust force acts on the inner ring 20, the large-diameter side end surface of the tapered roller 30 comes into contact with the large-diameter side inner end surface 24, and the thrust force acts on the outer ring 11 via the tapered roller 30.

円すいころ３０の回転によって、発電機８０のハウジング８１が固定軸８６に対し回転する。すなわち、永久磁石８２がコイル８４に対し回転し、コイル８４に誘導電流が発生する。コイル８４は、円周方向に独立した少なくとも３つのコイル部からなり、各コイル部から互いに位相が異なる交流電流が発生する。   The housing 81 of the generator 80 rotates with respect to the fixed shaft 86 by the rotation of the tapered roller 30. That is, the permanent magnet 82 rotates with respect to the coil 84 and an induced current is generated in the coil 84. The coil 84 includes at least three coil portions that are independent in the circumferential direction, and alternating currents having different phases are generated from the coil portions.

３つのコイル部からの交流電流は、動力線８４ａを経てコンバータ９の整流回路９７へ導かれ、ここで直流電流に変換される。円すいころ軸受１０を風力発電に使用した場合、風の変化によって内輪２１の回転数の変動があり、交流電流の発電量に変化がある。交流電流の発電量の変化によって、電圧が変化するため、一定電圧になるよう電圧調整回路９８で電圧調整する。電圧調整回路９８によって一定電圧に調整された直流電流は、データロガー９２のバッテリー９５に蓄えられる。バッテリー９５の電気を使って、画面９３および処理回路９４が作動する。   The alternating currents from the three coil portions are guided to the rectifier circuit 97 of the converter 9 through the power line 84a, where they are converted into direct currents. When the tapered roller bearing 10 is used for wind power generation, the rotational speed of the inner ring 21 varies due to wind changes, and the amount of AC current generated varies. Since the voltage changes according to the change in the amount of power generated by the alternating current, the voltage is adjusted by the voltage adjustment circuit 98 so that the voltage becomes constant. The direct current adjusted to a constant voltage by the voltage adjustment circuit 98 is stored in the battery 95 of the data logger 92. The screen 93 and the processing circuit 94 are activated using the electricity of the battery 95.

ピン６０にかかる荷重によって、歪ゲージ９０が変形し、歪ゲージ９０の信号は信号線９１を経てデータロガー９２の処理回路９４へ送られる。歪ゲージ９０の変形を時系列で画面９３に表示する。   The strain applied to the pin 60 deforms the strain gauge 90, and a signal from the strain gauge 90 is sent to the processing circuit 94 of the data logger 92 via the signal line 91. The deformation of the strain gauge 90 is displayed on the screen 93 in time series.

円すいころ３０に対しハウジング８１のフランジ部８３ｃの回転接触部８３ｄが回転接触する。回転接触部８３ｄはゴム材からなり、摩擦係数が高いので、円すいころ３０の回転を確実にハウジング８１に伝えることができる。回転接触している部分において、回転接触部８３ｄの外径が、円すいころ３０の外径に比べてかなり小さいので、円すいころ３０の回転は、増速されてハウジング８１に伝えられる。この結果、発電機８０からデータロガー９２を作動させるに必要な発電量が得られる。   The rotational contact portion 83 d of the flange portion 83 c of the housing 81 is in rotational contact with the tapered roller 30. Since the rotation contact portion 83d is made of a rubber material and has a high friction coefficient, the rotation of the tapered roller 30 can be reliably transmitted to the housing 81. Since the outer diameter of the rotating contact portion 83 d is considerably smaller than the outer diameter of the tapered roller 30 in the portion that is in rotational contact, the rotation of the tapered roller 30 is accelerated and transmitted to the housing 81. As a result, a power generation amount necessary for operating the data logger 92 from the generator 80 is obtained.

自転車の前輪のハブに使用される市販のハブ型発電機を使用するので、永久磁石８２、ヨーク８３およびコイル８４等の材料を手配する手間を省くことができる。円周方向において、一対の円すいころ３０間に発電機が配置されるので、永久磁石８２、コイル８４の大きさに制約が無くなり、設計の自由が増す。   Since a commercially available hub-type generator used for the front wheel hub of the bicycle is used, it is possible to save the trouble of arranging materials such as the permanent magnet 82, the yoke 83, and the coil 84. Since the generator is disposed between the pair of tapered rollers 30 in the circumferential direction, the size of the permanent magnet 82 and the coil 84 is not limited, and design freedom increases.

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、円すいころ軸受１０の円すいころ３０間に発電機８０を配置した。他の実施形態として、ころ軸受のころ間に発電機を配置しても良い。   In the embodiment described above, the generator 80 is disposed between the tapered rollers 30 of the tapered roller bearing 10. As another embodiment, a generator may be disposed between the rollers of the roller bearing.

上述した実施形態は、計測装置として歪ゲージ９０およびデータロガー９２を用いた例について述べた。他の実施形態として、計測装置は、温度センサーおよびデータロガーであっても良く、振動ピックアップおよびデータロガーであっても良く、ジャイロセンサおよびデータロガーであっても良い。   In the above-described embodiment, an example in which the strain gauge 90 and the data logger 92 are used as the measurement device has been described. As another embodiment, the measurement device may be a temperature sensor and a data logger, a vibration pickup and a data logger, or a gyro sensor and a data logger.

上述した実施形態は、発電機８０として自転車の前輪のハブによく使われているハブ型発電機を使用した。他の実施形態として、自転車の前輪タイヤに回転接触させるローラが付いたダイナモを発電機に使用しても良い。ダイナモは、固定側に永久磁石を設置し、ローラ側にコイルを設置し、コイルの端に整流子を設置したもので、コイルに発生した誘導電流を整流子を使って直流電流として取り出すものである。   In the above-described embodiment, a hub-type generator that is often used for a hub of a bicycle front wheel is used as the generator 80. As another embodiment, a dynamo with a roller that is brought into rotational contact with a front tire of a bicycle may be used for the generator. Dynamo is a permanent magnet installed on the fixed side, a coil installed on the roller side, and a commutator installed on the end of the coil. The induced current generated in the coil is taken out as a direct current using the commutator. is there.

１０：円すいころ軸受（ころ軸受）、１１：外輪、１２：外輪側軌道面、２０：内輪、２３：内輪側軌道面、３０：円すいころ（ころ）、４０：保持器、８０：発電機、８１：ハウジング（回転部）、８２：永久磁石（回転部）、８４：コイル（固定部）、８６：固定軸（固定部）、９０：歪ゲージ（計測装置）、９２：データロガー（計測装置） 10: Tapered roller bearing (roller bearing), 11: Outer ring, 12: Outer ring side raceway surface, 20: Inner ring, 23: Inner ring side raceway surface, 30: Tapered roller (roller), 40: Cage, 80: Generator, 81: Housing (rotating part), 82: Permanent magnet (rotating part), 84: Coil (fixed part), 86: Fixed shaft (fixed part), 90: Strain gauge (measuring device), 92: Data logger (measuring device) )

Claims (1)

内周に外輪側軌道面を形成した外輪と、外周に内輪側軌道面を形成した内輪と、前記外輪側軌道面および前記内輪側軌道面を転動し円周方向に複数配設されたころと、複数の前記ころを回転可能に保持した保持器とからなり、前記保持器に計測装置を取付けたころ軸受において、発電機は、回転部と、固定部とからなり、前記固定部に対して前記回転部を回転させることによって電気を発生させるものであり、前記固定部を複数の前記ころ間で前記保持器に取付けることにより、前記回転部を互いに隣り合う二つの前記ころの外周に同時に回転接触させ、前記回転接触する前記回転部の外周にゴム材からなる回転接触部を形成し、前記回転接触部の外径を前記ころの外径よりも小さくし、前記発電機の電気を前記計測装置に供給するようにしたことを特徴とするころ軸受。 An outer ring having an outer ring side raceway surface formed on the inner periphery, an inner ring having an inner ring side raceway surface formed on the outer periphery, and a plurality of rollers arranged in a circumferential direction by rolling the outer ring side raceway surface and the inner ring side raceway surface And a roller bearing in which a plurality of the rollers are rotatably held, and in the roller bearing in which a measuring device is attached to the cage, the generator includes a rotating part and a fixed part, and the The rotating portion is rotated to generate electricity, and the fixing portion is attached to the cage between the plurality of rollers, so that the rotating portion is simultaneously provided on the outer periphery of two rollers adjacent to each other. A rotating contact portion made of a rubber material is formed on the outer periphery of the rotating portion that is in rotational contact, the outer diameter of the rotating contact portion is made smaller than the outer diameter of the roller, and the electricity of the generator is To supply the measuring device. Roller bearing, characterized in that.
JP2012210483A 2012-09-25 2012-09-25 Roller bearing Expired - Fee Related JP6107023B2 (en)

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* Cited by examiner, † Cited by third party
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SE501814C2 (en) * 1993-08-06 1995-05-22 Skf Ab Device for load measurement in rolling bearings
JP2001138911A (en) * 1999-11-12 2001-05-22 Ntn Corp Power generating mechanism for freight train, and information communication system using the same
JP2011106580A (en) * 2009-11-18 2011-06-02 Jtekt Corp Roller bearing device with pin type cage
JP5540728B2 (en) * 2010-01-25 2014-07-02 株式会社ジェイテクト Roller bearing device
DE102012202522A1 (en) * 2012-02-20 2013-08-22 Schaeffler Technologies AG & Co. KG Sensor bearing, has outer ring coaxially surrounding inner ring, and circular cage distributing pockets uniformly in circumferential direction, where total number of pockets and total number of rolling bodies satisfy specific equation

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