JP6948866B2 - Bearings and devices with bearings - Google Patents

Bearings and devices with bearings Download PDF

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Publication number
JP6948866B2
JP6948866B2 JP2017141940A JP2017141940A JP6948866B2 JP 6948866 B2 JP6948866 B2 JP 6948866B2 JP 2017141940 A JP2017141940 A JP 2017141940A JP 2017141940 A JP2017141940 A JP 2017141940A JP 6948866 B2 JP6948866 B2 JP 6948866B2
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cage
outer race
race
contact
reference surface
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JP2019019962A (en
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直生 桃井
直生 桃井
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Nabtesco Corp
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Nabtesco Corp
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Priority to JP2017141940A priority Critical patent/JP6948866B2/en
Priority to KR1020180082820A priority patent/KR102631097B1/en
Priority to TW107124921A priority patent/TWI761557B/en
Priority to DE102018212093.5A priority patent/DE102018212093A1/en
Priority to CN201810801833.6A priority patent/CN109281929B/en
Publication of JP2019019962A publication Critical patent/JP2019019962A/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
    • F16C19/361—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 cylindrical 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
    • 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
    • F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • F16C33/4641—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages comprising two annular parts joined together
    • 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
    • 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
    • F16C33/4605—Details of interaction of cage and race, e.g. retention or centring
    • 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
    • F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • 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
    • 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
    • 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
    • F16C33/583—Details of specific parts of races
    • 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
    • F16C33/66—Special parts or details in view of lubrication
    • F16C33/6637—Special parts or details in view of lubrication with liquid lubricant
    • F16C33/664—Retaining the liquid in or near the bearing
    • F16C33/6651—Retaining the liquid in or near the bearing in recesses or cavities provided in retainers, races or rolling elements
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
    • 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
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • 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
    • F16C43/00—Assembling bearings
    • F16C43/04—Assembling rolling-contact bearings
    • F16C43/06—Placing rolling bodies in cages or bearings
    • 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
    • F16C2361/61—Toothed gear systems, e.g. support of pinion shafts
    • 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
    • F16C33/72—Sealings
    • F16C33/76—Sealings of ball or roller bearings
    • F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
    • F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Sealing With Elastic Sealing Lips (AREA)
  • Mounting Of Bearings Or Others (AREA)

Description

本発明は、軸受及び軸受を備える装置に関するものである。 The present invention relates to bearings and devices including bearings.

インナーレース（内輪）とアウターレース（外輪）との間に、保持器によって保持された複数の転動体を有する軸受が知られている。例えば特許文献１に、この種の軸受の具体的構成が記載されている。 A bearing having a plurality of rolling elements held by a cage between an inner race (inner ring) and an outer race (outer ring) is known. For example, Patent Document 1 describes a specific configuration of this type of bearing.

特許文献１において、インナーレースには、円錐ころの端面に接触し円錐ころの回転を案内する、鍔が形成されている。鍔には、凹部（係合部）が形成されている。一方、保持器の一端には、軸受の半径方向内方に湾曲し且つ先細りの突出部が形成されている。 In Patent Document 1, the inner race is formed with a collar that contacts the end face of the conical roller and guides the rotation of the conical roller. A recess (engagement portion) is formed in the collar. On the other hand, one end of the cage is formed with a protruding portion that is curved inward in the radial direction of the bearing and is tapered.

特許文献１では、転動体である円錐ころを保持した保持器がインナーレースに組み付けられ、次いで、インナーレースとの間に円錐ころ及び保持器を挟むように、アウターレースが組み付けられる。保持器がインナーレースに組み付けられる際、保持器の突出部がインナーレースの凹部に掛けられる。これにより、アウターレースが組み付けられる前の、保持器とインナーレースとの分離が防がれる。 In Patent Document 1, a cage holding the conical roller, which is a rolling element, is assembled to the inner race, and then the outer race is assembled so as to sandwich the conical roller and the cage between the inner race and the inner race. When the cage is assembled to the inner race, the protrusion of the cage is hung on the recess of the inner race. This prevents the cage and inner race from being separated before the outer race is assembled.

実開昭５８−１６５３２４号公報Jikkai Sho 58-165324

特許文献１に記載の軸受には、動作中（インナーレースとアウターレースとが相対回転しているとき）、保持器の突出部がインナーレースの凹部に接触して摩耗することがないように、凹部内において突出部と凹部との間にクリアランスが設けられている。保持器は、アウターレースの組み付けが行われていない状態では、突出部がインナーレースの凹部に掛かることによってインナーレースに取り付いているだけである。そのため、保持器及び保持器に保持された円錐ころは、突出部と凹部とのクリアランスによってインナーレースに対してガタつく。 The bearing described in Patent Document 1 is provided so that the protruding portion of the cage does not come into contact with the concave portion of the inner race and wear during operation (when the inner race and the outer race are relatively rotating). A clearance is provided between the protrusion and the recess in the recess. In the state where the outer race is not assembled, the cage is only attached to the inner race by the protruding portion hanging on the concave portion of the inner race. Therefore, the cage and the conical roller held by the cage rattle against the inner race due to the clearance between the protrusion and the recess.

ガタつきにより、インナーレースの転動面上において円錐ころが適正な姿勢から傾いた状態でアウターレースの組み付けが行われると、例えばアウターレースの転動面以外の部分が円錐ころの周面に突き当たり、円錐ころの周面に圧痕を付ける虞がある。そのため、作業者は、インナーレースに対する保持器の姿勢に注意しながらアウターレースを慎重に組み付ける必要があり、作業性が悪い。 When the outer race is assembled with the conical roller tilted from the proper posture on the rolling surface of the inner race due to rattling, for example, the part other than the rolling surface of the outer race hits the peripheral surface of the conical roller. , There is a risk of indentation on the peripheral surface of the conical roller. Therefore, the operator needs to carefully assemble the outer race while paying attention to the posture of the cage with respect to the inner race, resulting in poor workability.

本発明は上記の事情に鑑みてなされたものであり、その目的とするところは、組立時においてインナーレースやアウターレースに対する保持器の姿勢を適正な姿勢に決めやすい構成の軸受及び軸受を備える装置を提供することである。 The present invention has been made in view of the above circumstances, and an object of the present invention is a device including bearings and bearings having a structure that makes it easy to determine the posture of the cage with respect to the inner race and the outer race at the time of assembly. Is to provide.

本発明の一実施形態に係る軸受は、アウターレースと、アウターレースと同心円状に配置されたインナーレースと、アウターレースとインナーレースとの間に配置された複数のころと、複数のころを保持した保持器とを備える。保持器は、組立時にインナーレースとアウターレースのうち一方のレースに当接することによって、該一方のレースに対する、保持器の姿勢を決める、ガイド部を有する。 The bearing according to an embodiment of the present invention holds an outer race, an inner race concentrically arranged with the outer race, a plurality of rollers arranged between the outer race and the inner race, and a plurality of rollers. It is equipped with a cage. The cage has a guide portion that determines the posture of the cage with respect to the one race by abutting against one of the inner race and the outer race at the time of assembly.

このように構成された軸受では、保持器のガイド部をインナーレースとアウターレースのうち一方に当接させることで、当該一方のレースに対する保持器の姿勢が決まる。そのため、例えば一方のレースに他方のレースを組み付ける際に他方のレースの転動面以外の部分がころの周面に突き当たり、ころの周面に圧痕が付く不具合が避けられる。 In the bearing configured in this way, the guide portion of the cage is brought into contact with one of the inner race and the outer race, so that the posture of the cage with respect to the one race is determined. Therefore, for example, when assembling the other race to one race, a portion other than the rolling surface of the other race abuts on the peripheral surface of the roller, and a problem that an indentation is formed on the peripheral surface of the roller can be avoided.

また、本発明の一実施形態において、保持器は、転動体の回転軸方向及び該回転軸方向と直交する方向の変位を規制する規制部を有する構成としてもよい。この場合、組立時にガイド部が一方のレースに当接することによって、該一方のレースの転動面に対する規制部の姿勢が決まる。 Further, in one embodiment of the present invention, the cage may be configured to have a regulating portion that regulates the displacement of the rolling element in the rotation axis direction and in the direction orthogonal to the rotation axis direction. In this case, when the guide portion comes into contact with one of the races during assembly, the posture of the regulating portion with respect to the rolling surface of the one race is determined.

また、本発明の一実施形態において、保持器は、同心円状に配置された一対の環状体を、該環状体の周方向に所定間隔で並べて配置された複数の柱の各々で連結した形状を有する構成としてもよい。この場合、ガイド部は、一対の環状体の一方において、該環状体の全周に亘り又は一部で該環状体の半径方向外方に突出するように形成されたものであってもよい。 Further, in one embodiment of the present invention, the cage has a shape in which a pair of concentric annular bodies are connected by each of a plurality of columns arranged in the circumferential direction of the annular body at predetermined intervals. It may have a structure to have. In this case, the guide portion may be formed so as to project outward in the radial direction of the annular body in one of the pair of annular bodies over the entire circumference or a part of the annular body.

また、本発明の一実施形態に係る軸受は、組立時にガイド部が一方のレースに当接することによって、該一方のレースに対する保持器の位置が決まる構成としてもよい。 Further, the bearing according to the embodiment of the present invention may have a configuration in which the position of the cage with respect to the one race is determined by the guide portion abutting on one race at the time of assembly.

また、本発明の一実施形態において、一方のレースは、該一方のレースの転動面が上方を向く姿勢であるときに同じく上方を向く基準面を有しており、保持器は、組立時にガイド部が基準面に当接すると、一方のレースに対する姿勢が決まる構成としてもよい。 Further, in one embodiment of the present invention, one race has a reference surface that also faces upward when the rolling surface of the one race faces upward, and the cage is assembled at the time of assembly. When the guide portion comes into contact with the reference surface, the posture for one race may be determined.

また、本発明の一実施形態において、一方のレースは、該一方のレースの転動面が下方を向く姿勢であるときに同じく下方を向く基準面を有しており、保持器は、組立時にガイド部が基準面に当接すると、一方のレースに対する姿勢が決まる構成としてもよい。 Further, in one embodiment of the present invention, one race has a reference surface that also faces downward when the rolling surface of the one race faces downward, and the cage is assembled at the time of assembly. When the guide portion comes into contact with the reference surface, the posture for one race may be determined.

また、本発明の一実施形態において、ガイド部は、組立時に基準面に面接触することによって、該一方のレースに対する該保持器の姿勢を決めるガイド面を有する構成としてもよい。 Further, in one embodiment of the present invention, the guide portion may have a guide surface that determines the posture of the cage with respect to the one race by making surface contact with the reference surface at the time of assembly.

また、本発明の一実施形態に係る軸受を備える装置は、一方のレースが組み付けられる第一部材と、インナーレースとアウターレースのうち他方のレースが組み付けられる第二部材と、基準面と対向する位置に配置されており、第一部材と第二部材との隙間をシールするシール部材とを備える。
装置。 Further, the device including the bearing according to the embodiment of the present invention faces the reference plane with the first member to which one race is assembled and the second member to which the other race of the inner race and the outer race is assembled. It is arranged at a position and includes a sealing member that seals a gap between the first member and the second member.
Device.

また、本発明の一実施形態に係る軸受を備える装置は、組立時にシール部材上に載置された保持器を基準面側に移動させてガイド部を基準面に当接させるための部材を更に備える構成としてもよい。 Further, in the device including the bearing according to the embodiment of the present invention, a member for moving the cage mounted on the seal member to the reference surface side at the time of assembly and bringing the guide portion into contact with the reference surface is further added. It may be provided.

また、本発明の一実施形態に係る軸受を備える装置は、保持器が、組立時にガイド部が基準面と正対する姿勢でシール部材上に載置されており、シール部材が、第一部材と第二部材との円環状の隙間をシールする円環状部材であり、上記の当接させるための手段が、他方のレースに形成され、他方のレースの転動面に対して半径方向外方に突出し、且つシール部の内径部に収まる外径を有し、第二部材を第一部材に組み付ける際に、シール部の内径部を通過して、該シール部上に載置された保持器及び転動体に接触し、該保持器及び該転動体を基準面側に姿勢を変えずに移動させて、ガイド部を該基準面に当接させる構成としてもよい。 Further, in the device provided with the bearing according to the embodiment of the present invention, the cage is placed on the seal member in a posture in which the guide portion faces the reference surface at the time of assembly, and the seal member is the first member. It is an annular member that seals the annular gap with the second member, and the means for making the contact is formed in the other race and is radially outward with respect to the rolling surface of the other race. A cage that protrudes and has an outer diameter that fits in the inner diameter of the seal, passes through the inner diameter of the seal when the second member is assembled to the first member, and is placed on the seal. The cage may be in contact with the rolling element, the cage and the rolling element may be moved toward the reference surface without changing the posture, and the guide portion may be brought into contact with the reference surface.

本発明の一実施形態によれば、組立時においてインナーレースやアウターレースに対する保持器の姿勢を適正な姿勢に決めやすい構成の軸受及び軸受を備える装置が提供される。 According to one embodiment of the present invention, there is provided a device including a bearing and a bearing having a configuration in which the posture of the cage with respect to the inner race and the outer race can be easily determined to be an appropriate posture at the time of assembly.

本発明の第１実施例に係る軸受を備える装置の部分断面図である。It is a partial cross-sectional view of the apparatus provided with the bearing which concerns on 1st Embodiment of this invention. 本発明の第１実施例に係る軸受に備えられる保持器の斜視図である。It is a perspective view of the cage provided in the bearing which concerns on 1st Embodiment of this invention. 本発明の第１実施例に係る軸受の組み立て途中の状態を示す縦断面図である。It is a vertical cross-sectional view which shows the state in the process of assembling the bearing which concerns on 1st Example of this invention. 本発明の第２実施例に係る装置の断面図である。It is sectional drawing of the apparatus which concerns on 2nd Example of this invention. 本発明の第２実施例に係る装置の組み立てを説明するための図である。It is a figure for demonstrating assembly of the apparatus which concerns on 2nd Embodiment of this invention. 本発明の第２実施例に係る装置において下側に配置される第二部材に取り付けられるインナーレースの構造を示す断面図である。It is sectional drawing which shows the structure of the inner race attached to the 2nd member arranged on the lower side in the apparatus which concerns on 2nd Embodiment of this invention. 本発明の別の実施形態に係る軸受の組み立て途中の状態を示す縦断面図である。It is a vertical cross-sectional view which shows the state in the process of assembling the bearing which concerns on another embodiment of this invention.

以下、本発明の実施形態について図面を参照しながら説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

［実施例１］
本実施例１は、第一部材１Ａと第二部材１Ｂとを回転可能に支持する軸受１０に関するものである。図１は、装置１内に配置された軸受１０を表す断面図（回転軸ＡＸ１を含む面で切断した断面図）である。装置１が減速機であれば、第一部材１Ａは、例えば、減速機構に組み込まれた揺動歯車より伝達された動力により、サーボモータの回転速度より減速された回転速度で回転する部品（ケース）である。また、第二部材１Ｂは、例えば、揺動歯車を揺動可能に支持する部品（シャフト）や、この部品（シャフト）との間で揺動歯車を保持する部品（ホールドフランジ）である。装置１の例としては、減速機以外にも、工作機械、圧延機、航空機、自動車、鉄道等が挙げられる。 [Example 1]
The first embodiment relates to a bearing 10 that rotatably supports the first member 1A and the second member 1B. FIG. 1 is a cross-sectional view (cross-sectional view cut along a plane including the rotation axis AX1) showing a bearing 10 arranged in the device 1. If the device 1 is a speed reducer, the first member 1A is, for example, a component (case) that rotates at a rotation speed decelerated from the rotation speed of the servomotor by the power transmitted from the oscillating gear incorporated in the speed reduction mechanism. ). The second member 1B is, for example, a component (shaft) that swingably supports the swing gear, or a component (hold flange) that holds the swing gear between the swing gear and the component (shaft). Examples of the device 1 include machine tools, rolling mills, aircraft, automobiles, railways, and the like, in addition to the speed reducer.

図１に示されるように、軸受１０はころ軸受であり、複数のころ１１０、保持器１２０、アウターレース（外輪）１３０及びインナーレース（内輪）１４０を備えている。 As shown in FIG. 1, the bearing 10 is a roller bearing, and includes a plurality of rollers 110, a cage 120, an outer race (outer ring) 130, and an inner race (inner ring) 140.

アウターレース１３０及びインナーレース１４０は、回転軸ＡＸ１中心に同心円状に配置されており且つ互いに径の異なる円環状部材である。アウターレース１３０、インナーレース１４０は、それぞれ、装置１の第一部材１Ａ、第二部材１Ｂに圧入等で取り付けられる。 The outer race 130 and the inner race 140 are annular members that are concentrically arranged at the center of the rotation shaft AX1 and have different diameters from each other. The outer race 130 and the inner race 140 are attached to the first member 1A and the second member 1B of the device 1 by press fitting or the like, respectively.

アウターレース１３０、インナーレース１４０は、それぞれ、回転軸ＡＸ１に対して傾斜した転動面１３２、転動面１４２を有している。アウターレース１３０の転動面１３２とインナーレース１４０の転動面１４２との間には、保持器１２０が配置されている。 The outer race 130 and the inner race 140 each have a rolling surface 132 and a rolling surface 142 that are inclined with respect to the rotation axis AX1. A cage 120 is arranged between the rolling surface 132 of the outer race 130 and the rolling surface 142 of the inner race 140.

図２は、保持器１２０単体の斜視図である。図２に示されるように、保持器１２０は、複数のポケットＰを持つ、樹脂製のかご形保持器であり、円環状に形成されている。 FIG. 2 is a perspective view of the cage 120 alone. As shown in FIG. 2, the cage 120 is a resin cage-shaped cage having a plurality of pockets P, and is formed in an annular shape.

保持器１２０は、第一環状部１２２、第二環状部１２４及び複数の柱１２６を有している。第一環状部１２２は、軸受１０の軸方向における保持器１２０の一端側に形成された円環状部である。第二環状部１２４は、軸受１０の軸方向における保持器１２０の他端側に形成された円環状部である。第二環状部１２４は、第一環状部１２２と同心に配置されており、第一環状部１２２よりも小径である。 The cage 120 has a first annular portion 122, a second annular portion 124, and a plurality of columns 126. The first annular portion 122 is an annular portion formed on one end side of the cage 120 in the axial direction of the bearing 10. The second annular portion 124 is an annular portion formed on the other end side of the cage 120 in the axial direction of the bearing 10. The second annular portion 124 is arranged concentrically with the first annular portion 122 and has a smaller diameter than the first annular portion 122.

複数の柱１２６は、第一環状部１２２と第二環状部１２４との間に、回転軸ＡＸ１を中心とする周方向に所定間隔で並べて配置されている。各柱１２６は、第一環状部１２２と第二環状部１２４との間に延びて、第一環状部１２２と第二環状部１２４とを連結している。これにより、保持器１２０は、全体として円錐台状に形成されている。 The plurality of pillars 126 are arranged between the first annular portion 122 and the second annular portion 124 at predetermined intervals in the circumferential direction centered on the rotation axis AX1. Each pillar 126 extends between the first annular portion 122 and the second annular portion 124 to connect the first annular portion 122 and the second annular portion 124. As a result, the cage 120 is formed in a truncated cone shape as a whole.

ポケットＰは、第一環状部１２２、第二環状部１２４及び隣接する２つの柱１２６で囲われた矩形状を有している。各ポケットＰは、ころ１１０を保持している。本実施形態に係る軸受１では、各ポケットＰ内にころ１１０を保持した保持器１２０がアウターレース１３０に組み付けられ、次いで、アウターレース１３０との間にころ１１０及び保持器１２０を挟むように、インナーレース１４０が組み付けられている。なお、ころ１１０は、ポケットＰの下方からポケットＰに収められる。ここで、ポケットＰの幅（隣接する２つの柱１２６の間隔）は、ころ１１０の直径よりも僅かに狭くなっている。ころ１１０は、アウターレース１３０への組み付け前にポケットＰから脱落しないよう、例えば、ポケットＰに（隣接する２つの柱１２６間）に押し込まれる。 The pocket P has a rectangular shape surrounded by a first annular portion 122, a second annular portion 124, and two adjacent pillars 126. Each pocket P holds the roller 110. In the bearing 1 according to the present embodiment, the cage 120 holding the rollers 110 in each pocket P is assembled to the outer race 130, and then the rollers 110 and the cage 120 are sandwiched between the outer race 130 and the cage 130. The inner race 140 is assembled. The roller 110 is housed in the pocket P from below the pocket P. Here, the width of the pocket P (the distance between the two adjacent pillars 126) is slightly narrower than the diameter of the roller 110. The roller 110 is pushed into, for example, the pocket P (between two adjacent pillars 126) so as not to fall out of the pocket P before assembling to the outer race 130.

ころ１１０は、それぞれ、アウターレース１３０とインナーレース１４０との間で、転動面１３２、転動面１４２の各転動面上を転動しながら、回転軸ＡＸ１に対して傾斜した回転軸ＡＸ２を中心に回転する。これにより、アウターレース１３０（及び第一部材１Ａ）とインナーレース１４０（及び第二部材１Ｂ）とがころ１１０を介して回転軸ＡＸ１を中心に相対的に回転する。 The roller 110 rolls between the outer race 130 and the inner race 140 on the rolling surfaces of the rolling surface 132 and the rolling surface 142, and is inclined with respect to the rotating shaft AX1. Rotate around. As a result, the outer race 130 (and the first member 1A) and the inner race 140 (and the second member 1B) rotate relative to each other about the rotation shaft AX1 via the rollers 110.

補足すると、ポケットＰ内において、ころ１１０は、第一環状部１２２の規制面１２２Ａ及び第二環状部１２４の規制面１２４Ａにより、回転軸ＡＸ２方向の変位が規制される。また、ポケットＰ内において、ころ１１０は、隣接する２つの柱１２６の側面１２６Ａ、転動面１３２及び転動面１４２により、回転軸ＡＸ２と直交する方向の変位が規制される。すなわち、第一環状部１２２、第二環状部１２４及び柱１２６は、ころ１１０の回転軸ＡＸ２方向及び回転軸ＡＸ２方向と直交する方向の変位を規制する規制部として機能する。 Supplementally, in the pocket P, the roller 110 is restricted from being displaced in the rotation axis AX2 direction by the regulation surface 122A of the first annular portion 122 and the regulation surface 124A of the second annular portion 124. Further, in the pocket P, the roller 110 is restricted from being displaced in the direction orthogonal to the rotation axis AX2 by the side surfaces 126A, the rolling surface 132, and the rolling surface 142 of the two adjacent pillars 126. That is, the first annular portion 122, the second annular portion 124, and the pillar 126 function as a regulating portion that regulates the displacement of the roller 110 in the direction orthogonal to the rotation axis AX2 direction and the rotation axis AX2 direction.

図３は、本実施例１に係る軸受１０の組み立て途中の状態を示す縦断面図である。図３では、アウターレース１３０は、第一部材１Ａに取り付けられており、転動面１３２が上方を向く姿勢で配置されている。転動面１３２上には、複数のころ１１０及び各ころ１１０を各ポケットＰ内に保持した保持器１２０が配置されている。 FIG. 3 is a vertical cross-sectional view showing a state in which the bearing 10 according to the first embodiment is being assembled. In FIG. 3, the outer race 130 is attached to the first member 1A, and the rolling surface 132 is arranged so as to face upward. On the rolling surface 132, a cage 120 holding a plurality of rollers 110 and each roller 110 in each pocket P is arranged.

アウターレース１３０は、転動面１３２に対して角度をなす基準面１３４を有している。基準面１３４は、転動面１３２の一端と接続された面であり、転動面１３２が上方を向く姿勢であるときに同じく上方を向く。言い換えると、基準面１３４は、転動面１３２が下方を向く姿勢であるときに同じく下方を向く。本実施例１では、基準面１３４は、回転軸ＡＸ１と直交する面であるが、別の実施形態では、回転軸ＡＸ１と直交以外の角度をなす面であってもよい。 The outer race 130 has a reference surface 134 that is angled with respect to the rolling surface 132. The reference surface 134 is a surface connected to one end of the rolling surface 132, and also faces upward when the rolling surface 132 is in an upward facing posture. In other words, the reference surface 134 also faces downward when the rolling surface 132 is in a downward facing position. In the first embodiment, the reference surface 134 is a surface orthogonal to the rotation axis AX1, but in another embodiment, the reference surface 134 may be a surface having an angle other than orthogonal to the rotation axis AX1.

第一環状部１２２の外周部には、その全周に亘りガイド部Ｇが形成されている。ガイド部Ｇには、アウターレース１３０の基準面１３４と対向する位置にガイド面ＧＳが形成されている。 A guide portion G is formed on the outer peripheral portion of the first annular portion 122 over the entire circumference thereof. A guide surface GS is formed in the guide portion G at a position facing the reference surface 134 of the outer race 130.

保持器１２０は、アウターレース１３０の基準面１３４にガイド面ＧＳが当接（より詳細には、面接触）するようにアウターレース１３０上に配置される。ガイド部Ｇ（ガイド面ＧＳ）がアウターレース１３０の所定位置（基準面１３４）に当接することによって、アウターレース１３０に対する保持器１２０の位置が決まると共に保持器１２０の姿勢が決まる。 The cage 120 is arranged on the outer race 130 so that the guide surface GS abuts (more specifically, surface contact) on the reference surface 134 of the outer race 130. When the guide portion G (guide surface GS) abuts on the predetermined position (reference surface 134) of the outer race 130, the position of the cage 120 with respect to the outer race 130 is determined and the posture of the cage 120 is determined.

具体的には、ガイド部Ｇのガイド面ＧＳ、アウターレース１３０の基準面１３４は、何れも円環形状となっている。また、ガイド面ＧＳと基準面１３４は、半径方向の幅がほぼ等しい。ガイド面ＧＳの全体が基準面１３４の全体に面接触するように、保持器１２０がアウターレース１３０上に配置されることにより、アウターレース１３０に対する保持器１２０の位置が、設計上意図された適正な位置に決まる。 Specifically, the guide surface GS of the guide portion G and the reference surface 134 of the outer race 130 both have an annular shape. Further, the guide surface GS and the reference surface 134 have substantially the same width in the radial direction. By arranging the cage 120 on the outer race 130 so that the entire guide surface GS is in surface contact with the entire reference surface 134, the position of the cage 120 with respect to the outer race 130 is appropriate as intended by design. It is decided in a proper position.

また、例えば基準面１３４に対してガイド面ＧＳが傾く姿勢で保持器１２０がアウターレース１３０に組み付けられようとした場合にも、ガイド面ＧＳが基準面１３４に面接触することにより、上記の傾きが矯正されて、アウターレース１３０に対する保持器１２０の姿勢が、設計上意図された適正な姿勢に決まる。 Further, for example, even when the cage 120 is to be assembled to the outer race 130 in a posture in which the guide surface GS is tilted with respect to the reference surface 134, the guide surface GS comes into surface contact with the reference surface 134 and thus tilts as described above. Is corrected, and the posture of the cage 120 with respect to the outer race 130 is determined to be the proper posture intended by design.

アウターレース１３０に対する保持器１２０の位置及び姿勢が適正な位置及び姿勢に決まるため、ポケットＰをなす部分（第一環状部１２２、第二環状部１２４及び隣接する２つの柱１２６）の、アウターレース１３０の転動面１３２に対する位置及び姿勢も適正に決まる。転動面１３２に対して適正な位置及び姿勢に配置されたポケットＰ内にころ１１０が押し込まれて保持されているため、転動面１３２上における、ころ１１０の位置及び姿勢も適正なものとなる。 Since the position and posture of the cage 120 with respect to the outer race 130 is determined to be the proper position and posture, the outer race of the portion forming the pocket P (first annular portion 122, second annular portion 124 and two adjacent pillars 126). The position and posture of the 130 with respect to the rolling surface 132 are also appropriately determined. Since the roller 110 is pushed and held in the pocket P arranged at an appropriate position and posture with respect to the rolling surface 132, the position and orientation of the roller 110 on the rolling surface 132 are also appropriate. Become.

ガイド面ＧＳを基準面１３４に当接させた時点では、ポケットＰ内に押し込まれているころ１１０は、アウターレース１３０の転動面１３２に対して極僅かに浮いた状態にある。図３に示されるように、アウターレース１３０の上方からインナーレース１４０を組み付けると、ポケットＰ内に押し込まれていたころ１１０は、インナーレース１４０の転動面１４２によって下方に押されて転動面１３２に接触し、転動面１３２と転動面１４２との間で均一な荷重（予圧）が加えられつつポケットＰ内に保持された状態となる。 When the guide surface GS is brought into contact with the reference surface 134, the roller 110 pushed into the pocket P is in a state of being slightly floated with respect to the rolling surface 132 of the outer race 130. As shown in FIG. 3, when the inner race 140 is assembled from above the outer race 130, the time 110 that has been pushed into the pocket P is pushed downward by the rolling surface 142 of the inner race 140 and the rolling surface. It comes into contact with 132 and is held in the pocket P while a uniform load (preload) is applied between the rolling surface 132 and the rolling surface 142.

このように、本実施例１では、ガイド面ＧＳが基準面１３４に当接することにより、保持器１２０と各ころ１１０の、アウターレース１３０に対する位置及び姿勢が適正に決まる。そのため、例えば、インナーレース１４０の転動面１４２以外の部分がころ１１０の周面に突き当たり、ころ１１０の周面に圧痕が付く不具合が避けられる。従って、作業者は、インナーレース１４０を容易に組み付けることができる。 As described above, in the first embodiment, the position and posture of the cage 120 and each roller 110 with respect to the outer race 130 are appropriately determined by the guide surface GS coming into contact with the reference surface 134. Therefore, for example, a problem that a portion of the inner race 140 other than the rolling surface 142 abuts on the peripheral surface of the roller 110 and an indentation is formed on the peripheral surface of the roller 110 can be avoided. Therefore, the operator can easily assemble the inner race 140.

［実施例２］
実施例２について図４〜図６を参照して説明する。本実施例２は、第一部材１Ａに対して２つの軸受け１０ａ、１０ｂを介して第二部材１Ｂ及び１Ｂ’がそれぞれ取り付けられた構成を有する装置１’に関する。図４（ａ）に、装置１’の断面図（回転軸ＡＸ１を含む面で切断した断面図）を示す。装置１’は、例えば減速機である。装置１’が減速機である場合、第一部材１Ａは、例えば減速機のケースであり、第二部材１Ｂ、第二部材１Ｂ’は、それぞれ、例えば、減速機のシャフト、減速機のホールドフランジである。なお、装置１’の例としては、減速機以外にも、工作機械、圧延機、航空機、自動車、鉄道等が挙げられる。 [Example 2]
The second embodiment will be described with reference to FIGS. 4 to 6. The second embodiment relates to a device 1'having a configuration in which the second members 1B and 1B'are attached to the first member 1A via two bearings 10a and 10b, respectively. FIG. 4A shows a cross-sectional view of the device 1'(a cross-sectional view cut along a plane including the rotation axis AX1). The device 1'is, for example, a speed reducer. When the device 1'is a speed reducer, the first member 1A is, for example, the case of the speed reducer, and the second member 1B and the second member 1B'are, for example, the shaft of the speed reducer and the hold flange of the speed reducer, respectively. Is. In addition to the speed reducer, examples of the device 1'include machine tools, rolling mills, aircraft, automobiles, railways, and the like.

図４（ａ）に示されるように、装置１’内では、軸受１０ａを介して第一部材１Ａと第二部材１Ｂが相互に回転可能に保持されており、また、軸受１０ｂを介して第一部材１Ａと第二部材１Ｂ’が相互に回転可能に保持されている。軸受１０ａ、軸受１０ｂはいずれも実施例１の軸受１０と同じ構造を有している。以下では、説明の便宜のため、実施例１と同等の構成要素には同等の符号を用いる。詳細には、軸受１０ａの構成要素には、軸受１０の構成要素の番号の末尾にａを付加して示し、軸受１０ｂの構成要素には、軸受１０の構成要素の番号の末尾にｂを付加して示す。なお、図４（ａ）に示されるように、軸受１０ａ内では、保持機１２０ａは、第一環状部１２２ａ側を下に向けた状態で配置される。また、軸受１０ｂ内では、保持機１２０ｂは、第一環状部１２２ｂ側を上に向けた状態で配置される。 As shown in FIG. 4A, in the device 1', the first member 1A and the second member 1B are mutually rotatable via the bearing 10a, and the first member 1A and the second member 1B are held rotatably via the bearing 10b. The first member 1A and the second member 1B'are held so as to be rotatable with each other. Both the bearing 10a and the bearing 10b have the same structure as the bearing 10 of the first embodiment. In the following, for convenience of explanation, the same reference numerals are used for the components equivalent to those in the first embodiment. Specifically, a is added to the end of the component number of the bearing 10 to the component of the bearing 10a, and b is added to the end of the number of the component of the bearing 10 to the component of the bearing 10b. And show. As shown in FIG. 4A, in the bearing 10a, the holding machine 120a is arranged with the first annular portion 122a side facing downward. Further, in the bearing 10b, the holding machine 120b is arranged with the first annular portion 122b side facing upward.

図４（ｂ）に、第一部材１Ａの下側の部分（軸受１０ａ及びシール部２を含む部分）の拡大図を示す。図４（ｂ）に示されるように、装置１’の下側の部分には、軸受１０ａが配置されており、軸受１０ａを介して第一部材１Ａと第二部材１Ｂとが互いに回転可能に保持されている。第一部材１Ａの底部において、第一部材１Ａの内面と第二部材１Ｂの外面との間にはシール部２が取り付けられており、それにより装置１’の内部空間が外部から密封された状態となっている。 FIG. 4B shows an enlarged view of a lower portion (a portion including the bearing 10a and the seal portion 2) of the first member 1A. As shown in FIG. 4B, a bearing 10a is arranged in the lower portion of the device 1', and the first member 1A and the second member 1B can rotate with each other via the bearing 10a. It is held. At the bottom of the first member 1A, a seal portion 2 is attached between the inner surface of the first member 1A and the outer surface of the second member 1B, whereby the internal space of the device 1'is sealed from the outside. It has become.

図５（ａ）〜図５（ｅ）は、装置１’の組み立てを説明する図である。始めに、図５（ａ）に示されるように、２つのアウターレース１３０ａ及び１３０ｂが第一部材１Ａ（例えば減速機のケース）に圧入等によって取り付けられる。 5 (a) to 5 (e) are diagrams illustrating the assembly of the device 1'. First, as shown in FIG. 5A, the two outer races 130a and 130b are attached to the first member 1A (for example, the case of the speed reducer) by press fitting or the like.

次に、図５（ｂ）に示されるように、ころ１１０ａを保持した保持器１２０ａが、第二環状部１２４ａ側を上に向けた状態で下方からアウターレース１３０ａに近付けられる。なお、ころ１１０ａは、ポケットＰａの上方からポケットＰａに収められる。ポケットＰａの幅（隣接する２つの柱１２６ａの間隔）は、ころ１１０ａの直径よりも僅かに狭くなっている。そのため、ポケットＰａに収められたころ１１０ａは、隣接する２つの柱１２６ａに支えられ、ポケットＰａを抜けて保持器１２０ａから脱落することがない。 Next, as shown in FIG. 5B, the cage 120a holding the rollers 110a is brought closer to the outer race 130a from below with the second annular portion 124a side facing upward. The roller 110a is housed in the pocket Pa from above the pocket Pa. The width of the pocket Pa (the distance between the two adjacent pillars 126a) is slightly narrower than the diameter of the rollers 110a. Therefore, the time 110a housed in the pocket Pa is supported by two adjacent pillars 126a, and does not fall out of the cage 120a through the pocket Pa.

次に、図５（ｃ）に示されるように、シール部２が第一部材１Ａに取り付けられる。具体的には、シール部２は、弾性変形可能な円環状部材であり、第一部材１Ａの内径部１Ａａよりも僅かに大きい外径を有している。シール部２は、第一部材１Ａ底部の内径部１Ａａに弾性変形することによって嵌め込まれる。 Next, as shown in FIG. 5C, the seal portion 2 is attached to the first member 1A. Specifically, the seal portion 2 is an elastically deformable annular member, and has an outer diameter slightly larger than the inner diameter portion 1Aa of the first member 1A. The seal portion 2 is fitted by elastically deforming into the inner diameter portion 1Aa of the bottom portion of the first member 1A.

保持器１２０ａのガイド部Ｇａにおける、ガイド面ＧＳａの反対側には、載置面１２２ａＢが、第一環状部１２２ａの周方向の全周に亘り又は一部に形成されている。保持器１２０ａは、載置面１２２ａＢを底面として、第一部材１Ａに取り付けられたシール部材２の内壁面２Ａ上に、ガイド面ＧＳａがアウターレース１３０ａの基準面１３４ａと正対する姿勢で載置される。保持器１２０ａが内壁面２Ａ上に載置されることにより、保持器１２０ａがシール部２を介して第一部材１Ａに仮保持される。そのため、把持手段（作業者の手や治具等）による保持器１２０ａの把持が解除された場合にも、保持器１２０ａが第一部材１Ａから脱落することがない。 On the opposite side of the guide surface GSa of the guide portion Ga of the cage 120a, a mounting surface 122aB is formed over the entire circumference or a part of the circumferential direction of the first annular portion 122a. The cage 120a is mounted on the inner wall surface 2A of the seal member 2 attached to the first member 1A with the mounting surface 122aB as the bottom surface in a posture in which the guide surface GSa faces the reference surface 134a of the outer race 130a. NS. By placing the cage 120a on the inner wall surface 2A, the cage 120a is temporarily held by the first member 1A via the seal portion 2. Therefore, the cage 120a does not fall off from the first member 1A even when the cage 120a is released from being gripped by the gripping means (operator's hand, jig, etc.).

ここで、図６を参照し、第二部材１Ｂ（例えば減速機のシャフト）に圧入等によって取り付けられるインナーレース１４０ａの構成について説明する。インナーレース１４０ａには、転動面１４２ａに対して半径方向外方に突出し、且つシール部２の内周に収まる外径を有する鍔部１４４ａが形成されている。鍔部１４４ａは、インナーレース１４０ａの周方向の全周に亘り又は一部に形成されており、インナーレース１４０ａの半径方向と直交する方向に延びた爪部１４６ａを有している（図６の拡大図参照）。 Here, with reference to FIG. 6, the configuration of the inner race 140a attached to the second member 1B (for example, the shaft of the speed reducer) by press fitting or the like will be described. The inner race 140a is formed with a collar portion 144a having an outer diameter that protrudes outward in the radial direction with respect to the rolling surface 142a and has an outer diameter that fits in the inner circumference of the seal portion 2. The collar portion 144a is formed over the entire circumference or a part of the inner race 140a in the circumferential direction, and has a claw portion 146a extending in a direction orthogonal to the radial direction of the inner race 140a (FIG. 6). See enlarged view).

図５（ｄ）及び図５（ｅ）に示されるように、第二部材１Ｂが第一部材１Ａに組み付けられる。具体的には、第二部材１Ｂは、インナーレース１４０ａの鍔部１４４ａがシール部２の内径部を通過するように、第一部材１Ａ側に（回転軸ＡＸ１方向に沿って上方に）持ち上げられる。保持器１２０ａは、ころ１１０ａの一部がシール部２の内径部に対して半径方向内方に位置する状態でシール部２上に載置されている。鍔部１４４ａがシール部２の内径部を通過すると、爪部１４６ａが、ころ１１０ａの端面に掛かる。爪部１４６ａがころ１１０ａの端面に掛かった状態で第二部材１Ｂが第一部材１Ａ側に持ち上げられると、爪部１４６ａは、ころ１１０ａを保持器１２０ａの柱１２６ａから僅かに押し上げた後に柱１２６ａに当接し、保持器１２０ａ及びころ１１０ａを、第一部材１Ａ側に押し上げる。 As shown in FIGS. 5D and 5E, the second member 1B is assembled to the first member 1A. Specifically, the second member 1B is lifted toward the first member 1A (upward along the rotation axis AX1 direction) so that the flange portion 144a of the inner race 140a passes through the inner diameter portion of the seal portion 2. .. The cage 120a is placed on the seal portion 2 in a state where a part of the rollers 110a is located inward in the radial direction with respect to the inner diameter portion of the seal portion 2. When the flange portion 144a passes through the inner diameter portion of the seal portion 2, the claw portion 146a hangs on the end face of the roller 110a. When the second member 1B is lifted toward the first member 1A while the claw portion 146a is hooked on the end face of the roller 110a, the claw portion 146a slightly pushes the roller 110a up from the pillar 126a of the cage 120a and then the pillar 126a. The cage 120a and the roller 110a are pushed up toward the first member 1A.

ころ１１０ａ及び保持器１２０ａは、インナーレース１４０ａ（主に爪部１４６ａ）により、姿勢を変えることなく、第一部材１Ａ側に持ち上げられる。そのため、ガイド面ＧＳａは、基準面１３４ａと正対する状態を保ったまま、基準面１３４ａに面接触（当接）する。すなわち、鍔部１４４ａ（爪部１４６ａ）は、シール部２上に載置された保持器１２０ａを基準面１３４ａ側に移動させてガイド部ＧＳａを基準面１３４ａに当接させるための機能を持つ。 The rollers 110a and the cage 120a are lifted toward the first member 1A by the inner race 140a (mainly the claw portion 146a) without changing the posture. Therefore, the guide surface GSa comes into surface contact (contact) with the reference surface 134a while maintaining a state of facing the reference surface 134a. That is, the collar portion 144a (claw portion 146a) has a function of moving the cage 120a mounted on the seal portion 2 toward the reference surface 134a and bringing the guide portion GSa into contact with the reference surface 134a.

図５（ｅ）に示されるように、ガイド面ＧＳが基準面１３４ａに当接することにより、保持器１２０ａ及びころ１１０ａは、アウターレース１３０ａに対する位置及び姿勢が適正な位置及び姿勢に決まる。なお、図５（ｅ）に示されるように、シール部２は、第一部材１Ａと第二部材１Ｂとの隙間（円環状の隙間）をシールする。シール部２によって第一部材１Ａと第二部材１Ｂとの隙間がシールされることにより、軸受１０ａ及び１０ｂ周りに充填される潤滑油の外部への漏れが防がれる。 As shown in FIG. 5 (e), when the guide surface GS comes into contact with the reference surface 134a, the positions and postures of the cage 120a and the rollers 110a with respect to the outer race 130a are determined to be appropriate positions and postures. As shown in FIG. 5E, the seal portion 2 seals the gap (annular gap) between the first member 1A and the second member 1B. By sealing the gap between the first member 1A and the second member 1B by the sealing portion 2, the lubricating oil filled around the bearings 10a and 10b can be prevented from leaking to the outside.

本実施例２では、第二部材１Ｂを第一部材１Ａに組み付ける過程で、保持器１２０ａ及びころ１１０ａの位置及び姿勢が適正な位置及び姿勢に自ずと決まる。そのため、例えば、インナーレース１４０ａの転動面１４２ａ以外の部分がころ１１０ａの周面に突き当たり、ころ１１０ａの周面に圧痕が付く不具合が避けられる。従って、作業者は、インナーレース１４０ａを容易に組み付けることができる。 In the second embodiment, in the process of assembling the second member 1B to the first member 1A, the positions and postures of the cage 120a and the rollers 110a are naturally determined to be appropriate positions and postures. Therefore, for example, a problem that a portion other than the rolling surface 142a of the inner race 140a abuts on the peripheral surface of the roller 110a and an indentation is formed on the peripheral surface of the roller 110a can be avoided. Therefore, the operator can easily assemble the inner race 140a.

図５（ｅ）に示されるように、保持器１２０ｂは、アウターレース１３０ｂの基準面１３４ｂにガイド面ＧＳｂが接触（当接）するようにアウターレース１３０ｂ上に載置される。ガイド面ＧＳが基準面１３４ｂに当接すると、実施例１と同様に、アウターレース１３０ｂに対する保持器１２０ｂ及びころ１１０ｂの位置及び姿勢が適正に決まる。 As shown in FIG. 5 (e), the cage 120b is placed on the outer race 130b so that the guide surface GSb contacts (contacts) the reference surface 134b of the outer race 130b. When the guide surface GS comes into contact with the reference surface 134b, the positions and postures of the cage 120b and the rollers 110b with respect to the outer race 130b are appropriately determined as in the first embodiment.

そして、図５（ｅ）に示されるように、インナーレース１４０ｂが第二部材１Ｂ’（例えばホールドフランジ）に圧入等によって取り付けられる。 Then, as shown in FIG. 5 (e), the inner race 140b is attached to the second member 1B'(for example, a hold flange) by press fitting or the like.

次に、図３を参照して説明した組立ての流れと同様に、インナーレース１４０ｂがアウターレース１３０ｂに組み付けられる。アウターレース１３０ｂに対する保持器１２０ｂ及びころ１１０ｂの位置及び姿勢が適正に決まっていることから、例えば、インナーレース１４０ｂの転動面１４２ｂ以外の部分がころ１１０ｂの周面に突き当たり、ころ１１０ｂの周面に圧痕が付く不具合が避けられる。作業者は、インナーレース１４０ｂを容易に組み付けることができる。 Next, the inner race 140b is assembled to the outer race 130b in the same manner as the assembly flow described with reference to FIG. Since the positions and postures of the cage 120b and the roller 110b with respect to the outer race 130b are properly determined, for example, a portion of the inner race 140b other than the rolling surface 142b abuts on the peripheral surface of the roller 110b, and the peripheral surface of the roller 110b The problem of indentation is avoided. The operator can easily assemble the inner race 140b.

以上が本発明の例示的な実施形態の説明である。本発明の実施形態は、上記に説明したものに限定されず、本発明の技術的思想の範囲において様々な変形が可能である。例えば、明細書中に例示的に明示される実施形態等又は自明な実施形態等を適宜組み合わせた内容も本願の実施形態に含まれる。 The above is the description of the exemplary embodiment of the present invention. The embodiments of the present invention are not limited to those described above, and various modifications can be made within the scope of the technical idea of the present invention. For example, the embodiment of the present application also includes a content obtained by appropriately combining an embodiment or the like or a self-explanatory embodiment or the like which is exemplified in the specification.

上記の実施形態では、図２に示されるように、ガイド部Ｇは、第一環状部１２２の全周に亘って形成されている。これに対し、別の実施形態では、ガイド部Ｇは、第一環状部１２２の全周に限らず、一部にだけ形成されてもよい。一例として、ガイド部Ｇは、２０°程度の角度寸法を持ち、第一環状部１２２の周方向に１８０°間隔で２箇所又は１２０°間隔で３箇所形成されたものであってもよい。すなわち、少なくとも２箇所においてガイド面ＧＳが基準面１３４に当接する構成を採用することにより、アウターレース１３０に対する保持器１２０の位置及び姿勢を適正に決めることが可能となる。 In the above embodiment, as shown in FIG. 2, the guide portion G is formed over the entire circumference of the first annular portion 122. On the other hand, in another embodiment, the guide portion G may be formed not only on the entire circumference of the first annular portion 122 but only on a part thereof. As an example, the guide portion G may have an angular dimension of about 20 ° and may be formed at two locations at 180 ° intervals or three locations at 120 ° intervals in the circumferential direction of the first annular portion 122. That is, by adopting a configuration in which the guide surface GS abuts on the reference surface 134 at at least two locations, the position and posture of the cage 120 with respect to the outer race 130 can be appropriately determined.

上記の実施形態では、ガイド面ＧＳが基準面１３４に接触した状態でアウターレース１３０とインナーレース１４０とが相対回転する。これに対し、別の実施形態では、ガイド面ＧＳが基準面１３４に接触しない状態でアウターレース１３０とインナーレース１４０とが相対回転するようにしてもよい。具体的には、アウターレース１３０にインナーレース１４０を組み付ける際、上記の実施形態に対して強めの予圧を掛ける。これにより、例えばインナーレース１４０の一部が保持器１２０に接触し、ガイド面ＧＳが基準面１３４から所定量浮上するように、保持器１２０が弾性変形する。この場合、ガイド面ＧＳが基準面１３４上に接触しない状態でアウターレース１３０とインナーレース１４０とが相対回転する。そのため、ガイド面ＧＳ及び基準面１３４の摩耗が避けられる。 In the above embodiment, the outer race 130 and the inner race 140 rotate relative to each other with the guide surface GS in contact with the reference surface 134. On the other hand, in another embodiment, the outer race 130 and the inner race 140 may rotate relative to each other in a state where the guide surface GS does not contact the reference surface 134. Specifically, when assembling the inner race 140 to the outer race 130, a stronger preload is applied to the above embodiment. As a result, for example, a part of the inner race 140 comes into contact with the cage 120, and the cage 120 is elastically deformed so that the guide surface GS rises from the reference surface 134 by a predetermined amount. In this case, the outer race 130 and the inner race 140 rotate relative to each other with the guide surface GS not in contact with the reference surface 134. Therefore, wear of the guide surface GS and the reference surface 134 can be avoided.

また、上記の実施形態では、軸受１０のアウターレース１３０と装置１の第一部材１Ａとが別体で構成されているが、別の実施形態では、アウターレース１３０と第一部材１Ａとが一体に形成されてもよい。同じく、上記の実施形態では、軸受１０のインナーレース１４０と装置１の第二部材１Ｂとが別体で構成されているが、別の実施形態では、インナーレース１４０と第二部材１Ｂとが一体に形成されてもよい。 Further, in the above embodiment, the outer race 130 of the bearing 10 and the first member 1A of the device 1 are separately formed, but in another embodiment, the outer race 130 and the first member 1A are integrated. May be formed in. Similarly, in the above embodiment, the inner race 140 of the bearing 10 and the second member 1B of the device 1 are separately formed, but in another embodiment, the inner race 140 and the second member 1B are integrated. May be formed in.

また、上記の実施形態では、保持器１２０の第一環状部１２２にガイド部Ｇが形成されているが、別の実施形態では、第二環状部１２４にガイド部Ｇ（及びガイド面ＧＳ）が形成されてもよい。この場合、第二環状部１２４のガイド面ＧＳに対向する位置に、アウターレース１３０（又はインナーレース１４０）の基準面が形成される。 Further, in the above embodiment, the guide portion G is formed on the first annular portion 122 of the cage 120, but in another embodiment, the guide portion G (and the guide surface GS) is formed on the second annular portion 124. It may be formed. In this case, the reference surface of the outer race 130 (or the inner race 140) is formed at a position facing the guide surface GS of the second annular portion 124.

また、上記の実施形態では、ころ１１０は円筒ころであるが、別の実施形態では、円錐ころに置き換えてもよい。 Further, in the above embodiment, the roller 110 is a cylindrical roller, but in another embodiment, it may be replaced with a conical roller.

また、上記の実施形態では、保持器１２０及びころ１１０をアウターレース１３０に対して適正な位置及び姿勢に決めた状態でインナーレース１４０を組み付ける構成となっているが、別の実施形態では、保持器及びころをインナーレースに対して適正な位置及び姿勢に決めた状態でアウターレースを組み付ける構成を採用してもよい。この構成について、図７を用いて説明する。 Further, in the above embodiment, the inner race 140 is assembled in a state where the cage 120 and the roller 110 are determined to be in an appropriate position and posture with respect to the outer race 130, but in another embodiment, the inner race 140 is held. A configuration may be adopted in which the outer race is assembled with the vessel and roller determined at an appropriate position and posture with respect to the inner race. This configuration will be described with reference to FIG.

図７は、図３と同様の図であって、軸受１０”の組み立てを説明するための図である。図７に示されるように、インナーレース１４０”は、基準面１３４と同じ機能を持つ基準面１４４”を有しており、保持器１２０”は、基準面１４４”に対向する位置にガイド面ＧＳ”を有している。図７の実施形態では、保持器１２０”は、インナーレース１４０”の基準面１４４”にガイド面ＧＳ”が当接するように、インナーレース１４０”上に配置される。ガイド部Ｇ”（ガイド面ＧＳ”）がインナーレース１４０”の所定位置（基準面１４４”）に当接することによって、インナーレース１４０”に対する保持器１２０”の位置が決まると共に保持器１２０”の姿勢が決まる。そのため、作業者は、ころ１１０”の周面に圧痕を付けることなく、インナーレース１４０”にアウターレース１３０”を組み付けることが可能となる。 FIG. 7 is a view similar to that of FIG. 3, for explaining the assembly of the bearing 10 ″. As shown in FIG. 7, the inner race 140 ”has the same function as the reference surface 134. It has a reference surface 144 ", and the cage 120" has a guide surface GS "at a position facing the reference surface 144". In the embodiment of FIG. 7, the cage 120 "is arranged on the inner race 140" so that the guide surface GS "contacts the reference surface 144" of the inner race 140 ". Guide portion G" (guide surface). When the GS ") abuts on the predetermined position (reference surface 144") of the inner race 140 ", the position of the cage 120" with respect to the inner race 140 "is determined and the posture of the cage 120" is determined. Therefore, the operator can assemble the outer race 130 "to the inner race 140" without making an indentation on the peripheral surface of the roller 110 ".

１ 装置
１Ａ 第一部材
１Ｂ 第二部材
２ シール部材
１０ 軸受
１１０ ころ
１２０ 保持器
１２２ 第一環状部
１２４ 第二環状部
１２６ 柱
１３０ アウターレース
１３２、１４２ 転動面
１３４ 基準面
１４０ インナーレース 1 Device 1A 1st member 1B 2nd member 2 Sealing member 10 Bearing 110 Roller 120 Cage 122 1st annular part 124 2nd annular part 126 Pillar 130 Outer race 132, 142 Rolling surface 134 Reference surface 140 Inner race

Claims (8)

軸受と、該軸受を介して相互に回転可能に保持された第一部材及び第二部材と、前記第一部材と前記第二部材との円環状の隙間をシールする円環状のシール部材と、を備えた装置を組み立てる方法であって、
前記軸受は、
前記第一部材に取り付けられたアウターレースと、
前記アウターレースと同心に配置され、前記第二部材に取り付けられたインナーレースと、
前記アウターレースと前記インナーレースとの間に配置された複数のころと、
前記複数のころを保持した保持器と、を備え、
前記保持器は、
組立時に前記アウターレースに当接することによって、該アウターレースに対する、前記保持器の姿勢を決める、ガイド部を有し、
前記インナーレースは、前記シール部材の内周に収まる外径を有し、
前記第一部材に前記アウターレースを取り付ける工程と、
前記第二部材に前記インナーレースを取り付ける工程と、
前記第一部材の内径部に前記シール部材を嵌め込み、前記複数のころを保持した保持器を前記シール部材上に載置する工程と、
前記インナーレースが、前記シール部材の内径部を通過して、該シール部材上に載置された前記保持器及び前記ころに接触し、該保持器及び該ころを前記アウターレース側に姿勢を変えずに移動させて、前記ガイド部を該アウターレースに当接させる工程と、
を含む、
方法。 A bearing, a first member and a second member rotatably held by the bearing, an annular seal member that seals an annular gap between the first member and the second member, and an annular seal member. It is a method of assembling a device equipped with
The bearing is
The outer race attached to the first member and
The inner race, which is arranged concentrically with the outer race and attached to the second member,
A plurality of rollers arranged between the outer race and the inner race,
A cage for holding the plurality of rollers, and a cage for holding the plurality of rollers.
The cage is
By abutting the outer race during assembly, against the outer race, determine the attitude of the cage, have a guide portion,
The inner race has an outer diameter that fits within the inner circumference of the seal member.
The process of attaching the outer race to the first member and
The process of attaching the inner race to the second member and
A step of fitting the seal member into the inner diameter portion of the first member and placing a cage holding the plurality of rollers on the seal member.
The inner race passes through the inner diameter portion of the seal member and comes into contact with the cage and the roller mounted on the seal member, and the posture of the cage and the roller is changed to the outer race side. The process of moving the guide portion without contacting the outer race and the process of bringing the guide portion into contact with the outer race.
including,
Method . 前記保持器は、
前記ころの回転軸方向及び該回転軸方向と直交する方向の変位を規制する規制部を有し、
前記ガイド部が前記アウターレースに当接することによって、前記アウターレースの転動面に対する前記規制部の姿勢が決まる、
請求項１に記載の方法。 The cage is
It has a regulating part that regulates the displacement in the rotation axis direction of the roller and in the direction orthogonal to the rotation axis direction.
By the guide portion comes into contact with the outer race, the attitude of the regulating portion for the rolling surface of the outer race is determined,
The method according to claim 1. 前記保持器は、
同心に配置された一対の環状体を、該環状体の周方向に所定間隔で並べて配置された複数の柱の各々で連結した形状を有し、
前記ガイド部は、
前記一対の環状体の一方において、該環状体の全周に亘り又は一部で該環状体の半径方向外方に突出するように形成された、
請求項１又は請求項２に記載の方法。 The cage is
It has a shape in which a pair of concentrically arranged annular bodies are connected by each of a plurality of columns arranged side by side at predetermined intervals in the circumferential direction of the annular body.
The guide unit
One of the pair of annular bodies is formed so as to project outward in the radial direction of the annular body over the entire circumference or a part of the annular body.
The method according to claim 1 or 2. 前記ガイド部が前記アウターレースに当接することによって、該アウターレースに対する前記保持器の位置が決まる、
請求項１から請求項３の何れか一項に記載の方法。 By the guide portion comes into contact with the outer race, it determines the position of said retainer relative to said outer race,
The method according to any one of claims 1 to 3. 前記アウターレースは、
前記アウターレースの転動面が下方を向く姿勢であるときに同じく下方を向く基準面を有しており、
前記保持器は、
前記ガイド部が前記基準面に当接すると、前記アウターレースに対する姿勢が決まる、
請求項１から請求項４の何れか一項に記載の方法。 The outer race is
When the rolling surface of the outer race is in a downward-facing posture, it also has a downward-facing reference surface.
The cage is
When the guide portion comes into contact with the reference surface, the posture with respect to the outer race is determined.
The method according to any one of claims 1 to 4. 前記ガイド部は、
前記基準面に面接触することによって、該アウターレースに対する前記保持器の姿勢を決めるガイド面を有する、
請求項５に記載の方法。 The guide unit
It has a guide surface that determines the posture of the cage with respect to the outer race by making surface contact with the reference surface.
The method according to claim 5 . 前記インナーレースが、組立時に前記シール部材上に載置された前記保持器を前記基準面側に移動させて前記ガイド部を前記基準面に当接させるための手段を備える、
請求項５又は請求項６に記載の方法。 The inner race includes means for moving the cage mounted on the seal member toward the reference surface side at the time of assembly to bring the guide portion into contact with the reference surface.
The method according to claim 5 or 6 . 前記ガイド部を前記基準面に当接させるための手段は、
前記インナーレースの転動面に対して半径方向外方に突出し、且つ前記シール部の内径部に収まる外径を有し、
前記ガイド部を前記アウターレースに当接させる工程において、前記シール部の内径部を通過して、該シール部上に載置された前記保持器及び前記ころに接触し、該保持器及び該ころを前記基準面側に姿勢を変えずに移動させて、前記ガイド部を該基準面に当接させる、
請求項７に記載の方法。 The means for bringing the guide portion into contact with the reference surface is
It has an outer diameter that protrudes outward in the radial direction with respect to the rolling surface of the inner race and fits in the inner diameter portion of the seal portion.
In the step of bringing the guide portion into contact with the outer race, the guide portion passes through the inner diameter portion of the seal portion and comes into contact with the cage and the roller mounted on the seal portion, and the cage and the roller are contacted. Is moved to the reference surface side without changing its posture, and the guide portion is brought into contact with the reference surface.
The method according to claim 7 .
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