JP6349762B2 - Bearing device and bearing device manufacturing method - Google Patents

Bearing device and bearing device manufacturing method Download PDF

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JP6349762B2
JP6349762B2 JP2014024343A JP2014024343A JP6349762B2 JP 6349762 B2 JP6349762 B2 JP 6349762B2 JP 2014024343 A JP2014024343 A JP 2014024343A JP 2014024343 A JP2014024343 A JP 2014024343A JP 6349762 B2 JP6349762 B2 JP 6349762B2
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outer ring
locking projection
fixing plate
diameter side
inner diameter
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JP2015152048A (en
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豊 石橋
豊 石橋
日野原　慎
慎 日野原
拓也 堀家
拓也 堀家
隆朗 加藤木
隆朗 加藤木
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NSK Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/583—Details of specific parts of races
    • F16C33/586—Details of specific parts of races outside the space between the races, e.g. end faces or bore of inner ring
    • 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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/067—Fixing them in a housing
    • 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
    • F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
    • F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
    • F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2226/00—Joining parts; Fastening; Assembling or mounting parts
    • F16C2226/50—Positive connections
    • F16C2226/60—Positive connections with threaded parts, e.g. bolt and nut connections
    • 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

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

Description

本発明は、軸受装置及び軸受装置の製造方法に関し、例えば、トランスミッション、デファレンシャル、トランスファー等の動力伝達装置におけるギヤなどの回転支持部に用いられる軸受装置及び軸受装置の製造方法に関する。   The present invention relates to a bearing device and a manufacturing method of the bearing device, for example, a bearing device used for a rotation support portion such as a gear in a power transmission device such as a transmission, a differential, and a transfer, and a manufacturing method of the bearing device.

従来この種の軸受装置としては、例えば、図１２に示すように、内輪１と外輪２との間に複数の転動体３が配設された転がり軸受４と、該転がり軸受４の外輪２の軸方向端面に当接して転がり軸受４をハウジングＨに固定する固定プレート５と、を備えるものが知られている（例えば、特許文献１参照）。   Conventionally, as this type of bearing device, for example, as shown in FIG. 12, a rolling bearing 4 in which a plurality of rolling elements 3 are disposed between an inner ring 1 and an outer ring 2, and an outer ring 2 of the rolling bearing 4. There is known a structure including a fixed plate 5 that abuts against an end face in the axial direction and fixes the rolling bearing 4 to the housing H (see, for example, Patent Document 1).

また、自動車の小型化と共にトランスミッションの小型化が要請されており、このような要請に応える軸受装置として、特許文献２の軸受装置が知られている。特許文献２では、図１３に示すように、転がり軸受４の外輪２の外周面の軸方向端部に小径段部７を設け、該小径段部７に固定プレート５の円形穴部１０を嵌合固定したものが知られている。   Further, there is a demand for downsizing of a transmission along with downsizing of an automobile, and a bearing device of Patent Document 2 is known as a bearing device that meets such a demand. In Patent Document 2, as shown in FIG. 13, a small diameter step portion 7 is provided at the axial end of the outer peripheral surface of the outer ring 2 of the rolling bearing 4, and the circular hole portion 10 of the fixed plate 5 is fitted into the small diameter step portion 7. The fixed one is known.

この軸受装置では、外輪２の小径段部７に固定プレート５を外挿した後、固定プレート５の円形穴部１０の周縁部分の肉を潰し加工により径方向内側に突出させ、係止突起部６を形成し、小径段部７に形成された係止溝８に係止させている。   In this bearing device, after the fixing plate 5 is extrapolated to the small-diameter step portion 7 of the outer ring 2, the peripheral edge portion of the circular hole portion 10 of the fixing plate 5 is crushed so as to protrude radially inward, and the locking projection portion 6 is formed and is engaged with an engaging groove 8 formed in the small diameter step portion 7.

この軸受装置によれば、外輪２の軸方向端面に固定プレート５を当接させる場合（図１２）に比べて軸方向の寸法を短くすることができ、トランスミッションの小型化を図ることができる。   According to this bearing device, the axial dimension can be shortened compared with the case where the fixed plate 5 is brought into contact with the axial end surface of the outer ring 2 (FIG. 12), and the transmission can be downsized.

また、従来のプレス成形方法として、例えば、図１４に示すように、電刷子成形体１０１の摺動面１０２を突起化する代わりに、該摺動面１０２を整流子面に略外接するよう凹面状にすることが知られている。（例えば、特許文献３参照）   Further, as a conventional press molding method, for example, as shown in FIG. 14, instead of projecting the sliding surface 102 of the electroprinter molded body 101, a concave surface is formed so that the sliding surface 102 is substantially circumscribed by the commutator surface. It is known to form. (For example, see Patent Document 3)

特開２００４−０２８１２３号公報JP 2004-028123 A 独国特許出願公開１０２００４０３１８３０号明細書German Patent Application Publication No. 102004031830 特開２００３−１００４１１号公報Japanese Patent Laid-Open No. 2003-100411

ところで、抜け止め用の係止突起部には、固定プレートと外輪との相対回転を許容しつつ、安定した組み付け状態を維持することが求められる。抜け止め用の係止突起部は、固定プレートと外輪の間で径方向・軸方向それぞれにクリアランスをもっているため、軸方向に分離する分には抜け止めとして機能していても、該係止突起部は、固定プレートと外輪の間の偏心や傾きによって支えている部分が角部になり、該角部が欠けるおそれがある。   By the way, it is required for the locking projections for retaining to maintain a stable assembled state while allowing relative rotation between the fixed plate and the outer ring. The locking projections for retaining are provided with clearances in the radial direction and the axial direction between the fixed plate and the outer ring. In the portion, the portion supported by the eccentricity or inclination between the fixed plate and the outer ring becomes a corner portion, and the corner portion may be missing.

その対策として、係止突起部の強度を確保するために、係止突起部のボリュームを上げればよいのだが、係止突起部のボリュームが上がり過ぎると、外輪の小径段部の外径面と干渉し、相対回転が阻害されてしまう。したがって、実際、小径段部の外径面との干渉を避けつつ、小径段部の係止溝に収まるようなボリュームに調整せねばならず、相手側の形状（ここでいう軸受外輪の小径段部の形状）によって必然的に限られた範囲に収まる。   As a countermeasure, in order to ensure the strength of the locking projection, the volume of the locking projection should be increased. However, if the volume of the locking projection is increased too much, the outer diameter surface of the small diameter step portion of the outer ring Interference occurs and relative rotation is hindered. Therefore, in actuality, the volume must be adjusted to fit in the locking groove of the small diameter step portion while avoiding interference with the outer diameter surface of the small diameter step portion. Inevitably within a limited range depending on the shape of the part.

また、そもそも、係止突起部の数をもっと増やせば、傾きや抜けを抑制する効果が得られ、要求される係止突起部の強度も低く抑えることができるが、固定プレートの形状はトランスミッション内の部品を避けて設けられるため、必ずしも係止突起部の数を多く設けられるほどの十分なスペースがあるプレート形状にできるとは限らない。例えば、４つの係止突起部を設けたくても、スペース上３つしか係止突起部が打てないというケースも想定される。また、製造面では、プレス機の能力上、これ以上の係止突起部の数ができない、また、金型費のコストダウンという観点でも係止突起部の数は少ないほうが良い。
特許文献２の軸受装置では、抜け止め用の係止突起部をプレス成形する技術を開示しているが、係止突起部の具体的な先端形状については言及されていない。 In the first place, if the number of locking projections is further increased, the effect of suppressing tilting and slipping can be obtained, and the required locking projection strength can be kept low. Therefore, it is not always possible to form a plate having a sufficient space to provide a large number of locking projections. For example, even if it is desired to provide four locking protrusions, there may be a case where only three locking protrusions can be hit in space. Further, in terms of manufacturing, the number of locking projections cannot be increased because of the capability of the press, and the number of locking projections is preferably small from the viewpoint of reducing the cost of molds.
In the bearing device of Patent Document 2, a technique for press-molding a locking projection for retaining is disclosed, but a specific tip shape of the locking projection is not mentioned.

本発明は、上記の課題を鑑み、その目的は、潰し加工を採用しながらも、外輪と固定プレートの偏心や傾き等で、係止突起部と外輪とのかかり代が少なくなったときでも、外力発生時に係止突起部が欠けてしまうのをより効果的に防ぐことができ、外輪と固定プレートの干渉を避け非分離構造ながら相対回転可能な軸受装置及び軸受装置の製造方法を提供するものである。   In view of the above-mentioned problems, the present invention has an object in which, even when the crushing process is adopted, even when the cost of the locking projection and the outer ring is reduced due to the eccentricity or inclination of the outer ring and the fixing plate, Provided is a bearing device capable of effectively preventing the locking protrusion from being lost when an external force is generated, and capable of relative rotation while avoiding interference between the outer ring and the fixing plate and a non-separated structure, and a method for manufacturing the bearing device It is.

上記目的は以下の構成により達成される。
（１）内輪と外輪との間に複数の転動体が配設された転がり軸受と、該転がり軸受をハウジングに固定すべく、前記転がり軸受の前記外輪の外周面に嵌合される円形穴部を有する固定プレートと、を備え、
前記外輪の軸方向の端部外周部には、前記固定プレートが嵌合される小径段部が設けられるとともに、該小径段部の外周面に円周方向に延びる係止溝が形成され、
前記固定プレートの円形穴部の内周部には、少なくとも３箇所の切り欠き部が設けられるとともに、該各切り欠き部には、径方向内側にそれぞれ突出し、前記係止溝に係止される係止突起部が形成され、
前記係止突起部は、径方向内側に真っ直ぐに突出し、
前記係止突起部の内径側先端部は、ストレート形状、または凹形状に形成され、
前記係止突起部の前記内径側先端部の少なくとも周方向中央部は、前記外輪と前記固定プレートが偏心状態又は傾いた状態にあっても、軸方向から見て、前記係止溝と重なり、
前記固定プレートは、前記外輪に対し非分離且つ相対回転可能に取り付けられることを特徴とする軸受装置。
（２）凹形状に形成された前記係止突起部の前記内径側先端部の曲率半径は、前記外輪の前記小径段部の外周面の曲率半径より大きいことを特徴とする（１）に記載の軸受装置。
（３）凹形状に形成された前記係止突起部の前記内径側先端部の曲率半径は、前記外輪の前記小径段部の外周面の曲率半径と略同一であることを特徴とする（１）に記載の軸受装置。
（４）内輪と外輪との間に複数の転動体が配設された転がり軸受と、該転がり軸受をハウジングに固定すべく、前記転がり軸受の前記外輪の外周面に嵌合される円形穴部を有する固定プレートと、を備え、
前記外輪の軸方向の端部外周部には、前記固定プレートが嵌合される小径段部が設けられるとともに、該小径段部の外周面に円周方向に延びる係止溝が形成され、
前記固定プレートの円形穴部の内周部には、少なくとも３箇所の切り欠き部が設けられるとともに、該各切り欠き部には、径方向内側にそれぞれ突出し、前記係止溝に係止される係止突起部が形成される軸受装置を製造する方法であって、
前記外輪の前記小径段部に前記固定プレートを外挿した後に、前記固定プレートの円形穴部の開口縁部のうち、前記各切り欠き部の縁部を、パンチで軸方向から潰し加工することにより、径方向内側に突出する係止突起部が形成され、
前記パンチによって潰し加工されたことにより、径方向内側に突出する前記係止突起部は、真っ直ぐに突出し、
前記パンチによって潰し加工されたことにより、径方向内側に突出する前記係止突起部の内径側先端部は、ストレート形状、または凹形状に形成され、
前記係止突起部の前記内径側先端部の少なくとも周方向中央部は、前記外輪と前記固定プレートが偏心状態又は傾いた状態にあっても、軸方向から見て、前記係止溝と重なり、
前記固定プレートは、前記外輪に対し非分離且つ相対回転可能に取り付けられることを特徴とする軸受装置の製造方法。
（５）凹形状に形成された前記係止突起部の前記内径側先端部の曲率半径を、前記外輪の前記小径段部の外周面の曲率半径より大きく設けることを特徴とする（４）に記載の軸受装置。
（６）凹形状に形成された前記係止突起部の前記内径側先端部の曲率半径を、前記外輪の前記小径段部の外周面の曲率半径と略同一に設けることを特徴とする（４）に記載の軸受装置。 The above object is achieved by the following configuration.
(1) A rolling bearing in which a plurality of rolling elements are disposed between an inner ring and an outer ring, and a circular hole that is fitted to an outer peripheral surface of the outer ring of the rolling bearing so as to fix the rolling bearing to a housing. A fixing plate having
A small-diameter step portion to which the fixing plate is fitted is provided on the outer peripheral portion of the outer ring in the axial direction, and a locking groove extending in the circumferential direction is formed on the outer peripheral surface of the small-diameter step portion,
At least three notch portions are provided on the inner peripheral portion of the circular hole portion of the fixing plate, and each notch portion projects radially inward and is locked in the locking groove. A locking projection is formed,
The locking projection protrudes straight inward in the radial direction,
The inner diameter side tip of the locking projection is formed in a straight shape or a concave shape,
At least the circumferential direction central portion of the inner diameter side distal end portion of the engaging protrusion, even in a state where the fixing plate and the outer ring eccentrically or inclined, as viewed in the axial direction, and it heavy the locking groove The
The fixed plate is attached to the outer ring so as to be non-separable and relatively rotatable .
(2) The radius of curvature of the inner diameter side tip of the locking projection formed in a concave shape is larger than the radius of curvature of the outer peripheral surface of the small diameter step of the outer ring. Bearing device.
(3) The radius of curvature of the inner diameter side tip of the locking projection formed in a concave shape is substantially the same as the radius of curvature of the outer peripheral surface of the small diameter step of the outer ring (1 ) Bearing device.
( 4 ) A rolling bearing in which a plurality of rolling elements are disposed between the inner ring and the outer ring, and a circular hole that is fitted to the outer peripheral surface of the outer ring of the rolling bearing so as to fix the rolling bearing to the housing. A fixing plate having
A small-diameter step portion to which the fixing plate is fitted is provided on the outer peripheral portion of the outer ring in the axial direction, and a locking groove extending in the circumferential direction is formed on the outer peripheral surface of the small-diameter step portion,
At least three notch portions are provided on the inner peripheral portion of the circular hole portion of the fixing plate, and each notch portion projects radially inward and is locked in the locking groove. A method of manufacturing a bearing device in which a locking projection is formed,
After the fixing plate is extrapolated to the small-diameter step portion of the outer ring, the edge portion of each notch portion of the opening edge portion of the circular hole portion of the fixing plate is crushed from the axial direction with a punch. Due to this, a locking projection protruding radially inward is formed,
By being crushed by the punch, the locking protrusion protruding radially inward protrudes straightly,
By being crushed by the punch, the inner diameter side tip of the locking projection protruding radially inward is formed into a straight shape or a concave shape,
At least the circumferential direction central portion of the inner diameter side distal end portion of the engaging protrusion, even in a state where the fixing plate and the outer ring eccentrically or inclined, as viewed in the axial direction, and it heavy the locking groove The
The method for manufacturing a bearing device, wherein the fixing plate is attached to the outer ring so as to be non-separable and relatively rotatable .
(5) (4) characterized in that the radius of curvature of the inner diameter side tip of the locking projection formed in a concave shape is larger than the radius of curvature of the outer peripheral surface of the small diameter step of the outer ring. The bearing device described.
(6) The radius of curvature of the inner diameter side tip of the locking projection formed in a concave shape is provided substantially the same as the radius of curvature of the outer peripheral surface of the small diameter step of the outer ring (4 ) Bearing device.

本発明の軸受装置及び軸受装置の製造方法によれば、外輪の小径段部に形成された係止溝に係止される固定プレートの係止突起部は、径方向内側に真っ直ぐに突出し、その内径側先端部はストレート形状、または凹形状に形成され、係止突起部の内径側先端部の少なくとも周方向中央部は、外輪と固定プレートが偏心状態又は傾いた状態にあっても、軸方向から見て、係止溝と重なる。これにより、外輪と固定プレートとが偏心したり傾いた場合でも、内径側先端部の周方向中央部にて固定プレートの係止突起部と外輪の係止溝とのかかり代がしっかりと確保され、固定プレートと外輪とが外れてしまうのを防ぐことができ、安定した組み付け状態を維持することができる。 According to the bearing device and the manufacturing method of the bearing device of the present invention, the locking projection of the fixing plate locked in the locking groove formed in the small-diameter step portion of the outer ring protrudes straight inward in the radial direction. The tip on the inner diameter side is formed in a straight shape or a concave shape, and at least the center in the circumferential direction of the tip on the inner diameter side of the locking projection is axial even if the outer ring and the fixed plate are in an eccentric state or inclined state Seen from above, it overlaps with the locking groove. As a result, even when the outer ring and the fixed plate are eccentric or inclined, the margin of engagement between the locking projection of the fixed plate and the locking groove of the outer ring is secured at the circumferential center of the tip on the inner diameter side. The fixing plate and the outer ring can be prevented from coming off, and a stable assembled state can be maintained.

（ａ）は、本発明に係る軸受装置の第１実施形態を説明するための背面側斜視図、（ｂ）は、（ａ）の正面側から見た斜視図、（ｃ）は、（ａ）の軸受装置から軸受を取り除いた状態を示す固定プレートの斜視図である。(A) is the back side perspective view for demonstrating 1st Embodiment of the bearing apparatus based on this invention, (b) is the perspective view seen from the front side of (a), (c) is (a) It is a perspective view of the fixed plate which shows the state which removed the bearing from the bearing apparatus of (). （ａ）は、図１（ａ）及び図１（ｂ）の軸受装置の背面図、（ｂ）は、（ａ）のＩ−Ｉ線に沿った断面図、（ｃ）は、（ｂ）のＩＩ部拡大図のである。(A) is a rear view of the bearing device of FIGS. 1 (a) and 1 (b), (b) is a cross-sectional view taken along the line I-I of (a), and (c) is (b). FIG. （ａ）は、本発明に係る軸受装置の第１実施形態の固定プレートの背面図、（ｂ）は、（ａ）のＩＩＩ部拡大図である。(A) is a rear view of the fixed plate of 1st Embodiment of the bearing apparatus based on this invention, (b) is the III section enlarged view of (a). 第１実施形態に係る軸受装置の固定プレートの係止突起部と外輪の小径段部に設けられた係止溝とのかかり状態を説明するための係止突起部周辺の要部拡大図である。It is a principal part enlarged view of the periphery of the latching projection part for demonstrating the latching state of the latching projection part of the fixing plate of the bearing device which concerns on 1st Embodiment, and the latching groove provided in the small diameter step part of the outer ring | wheel. . （ａ）は、本発明に係る軸受装置の第２実施形態の固定プレートの背面図、（ｂ）は、（ａ）のＶ部拡大図である。(A) is a rear view of the fixed plate of 2nd Embodiment of the bearing apparatus based on this invention, (b) is the V section enlarged view of (a). 第２実施形態に係る軸受装置の固定プレートの係止突起部と外輪の小径段部に設けられた係止溝とのかかり状態を説明するための係止突起部周辺の要部拡大図である。It is a principal part enlarged view of a locking projection part periphery for demonstrating the latching state of the locking projection part of the fixing plate of the bearing device which concerns on 2nd Embodiment, and the locking groove provided in the small diameter step part of the outer ring | wheel. . （ａ）は、本発明に係る軸受装置の第３実施形態の固定プレートの背面図、（ｂ）は、（ａ）のＶＩＩ部拡大図である。(A) is a rear view of the fixed plate of 3rd Embodiment of the bearing apparatus based on this invention, (b) is the VII part enlarged view of (a). （ａ）は、本発明に係る軸受装置の第４実施形態の固定プレートの背面図、（ｂ）は、（ａ）のＶＩＩＩ部拡大図である。(A) is a rear view of the fixed plate of 4th Embodiment of the bearing apparatus based on this invention, (b) is the VIII part enlarged view of (a). 第４実施形態に係る軸受装置の固定プレートの係止突起部と外輪の小径段部に設けられた係止溝とのかかり状態を説明するための係止突起部周辺の要部拡大図である。It is a principal part enlarged view of the locking projection part periphery for demonstrating the latching state of the locking projection part of the fixing plate of the bearing device which concerns on 4th Embodiment, and the locking groove provided in the small diameter step part of the outer ring | wheel. . （ａ）は、本発明に係る軸受装置の第５実施形態の固定プレートの背面図、（ｂ）は、（ａ）のＸ部拡大図である。(A) is a rear view of the fixed plate of 5th Embodiment of the bearing apparatus based on this invention, (b) is the X section enlarged view of (a). 第５実施形態に係る軸受装置の固定プレートの係止突起部と外輪の小径段部に設けられた係止溝とのかかり状態を説明するための係止突起部周辺の要部拡大図である。It is a principal part enlarged view of the periphery of the latching projection part for demonstrating the engagement state of the latching projection part of the fixing plate of the bearing device which concerns on 5th Embodiment, and the latching groove provided in the small diameter step part of the outer ring | wheel. . 従来の軸受装置を説明するための要部断面図である。It is principal part sectional drawing for demonstrating the conventional bearing apparatus. 従来の他の軸受装置を説明するための要部断面図である。It is principal part sectional drawing for demonstrating the other conventional bearing apparatus. （ａ）は、従来の電刷子成形体の摺動面を凹面状にプレス成形することを説明するための電刷子成形体の側面図、（ｂ）は、（ａ）の正面図である。(A) is a side view of an electrobrush molded body for explaining that a sliding surface of a conventional electrobrush molded body is pressed into a concave shape, and (b) is a front view of (a).

以下、本発明の軸受装置及び係止突起部の各実施形態を、図面を参照しながら詳細に説明する。   Hereinafter, embodiments of the bearing device and the locking projection of the present invention will be described in detail with reference to the drawings.

（第１実施形態）
図１（ａ）は、本発明の第１実施形態に係る軸受装置の背面側斜視図であり、図１（ｂ）は、図１（ａ）の正面側から見た斜視図であり、図１（ｃ）は、図１（ａ）の軸受装置から軸受を取り除いた状態を示す固定プレートの斜視図であり、図２（ａ）は、図１（ａ）を正面から見た状態の軸受装置の背面図であり、図２（ｂ）は、図２（ａ）のＩ−Ｉ線に沿った断面図であり、図２（ｃ）は、図２（ｂ）のＩＩ部拡大図であり、図３（ａ）は、図１（ｃ）を正面から見た状態の固定プレートの背面図であり、図３（ｂ）は、図３（ａ）のＩＩＩ部拡大図である。 (First embodiment)
1A is a rear perspective view of the bearing device according to the first embodiment of the present invention, and FIG. 1B is a perspective view seen from the front side of FIG. 1 (c) is a perspective view of a fixed plate showing a state in which the bearing is removed from the bearing device of FIG. 1 (a), and FIG. 2 (a) is a bearing in a state where FIG. 1 (a) is viewed from the front. FIG. 2B is a rear view of the apparatus, FIG. 2B is a cross-sectional view taken along line I-I in FIG. 2A, and FIG. 2C is an enlarged view of a portion II in FIG. FIG. 3A is a rear view of the fixing plate in a state where FIG. 1C is viewed from the front, and FIG. 3B is an enlarged view of a portion III in FIG.

この第１実施形態の軸受装置９は、例えば、トランスミッションにおけるギヤなどの回転支持部に用いられる軸受装置として使用される。軸受装置９は、従来構造の図１２及び図１３も参照して、内輪１と外輪２との間に複数の転動体３が配設された転がり軸受４と、該転がり軸受４をハウジングＨに固定すべく、転がり軸受４の外輪２の外周面に嵌合される円形穴部を有する固定プレート５と、を備える。なお、本発明は、固定プレート５の係止突起部６の構成が従来構造と主に異なるため、図１（ａ）、図１（ｂ）、図２（ａ）及び図２（ｂ）においては内輪及び転動体を不図示とし、以下の説明では、固定プレート５と、該固定プレート５が取り付けられる転がり軸受４の外輪２とを中心に説明する。   The bearing device 9 of the first embodiment is used as, for example, a bearing device used for a rotation support portion such as a gear in a transmission. The bearing device 9 includes a rolling bearing 4 in which a plurality of rolling elements 3 are disposed between an inner ring 1 and an outer ring 2 and a rolling bearing 4 in a housing H with reference to FIGS. A fixing plate 5 having a circular hole fitted to the outer peripheral surface of the outer ring 2 of the rolling bearing 4 is provided for fixing. In the present invention, since the structure of the locking projection 6 of the fixing plate 5 is mainly different from the conventional structure, in FIGS. 1 (a), 1 (b), 2 (a) and 2 (b). The inner ring and the rolling element are not shown in the figure, and in the following description, the description will focus on the fixed plate 5 and the outer ring 2 of the rolling bearing 4 to which the fixed plate 5 is attached.

図２（ｂ）及び図２（ｃ）に示すように、外輪２の軸方向の端部外周部には、固定プレート５が嵌合される小径段部７が形成されており、該小径段部７の外周面の軸方向内側寄りには、係止溝８が周方向全周に沿って形成されている。   As shown in FIGS. 2B and 2C, a small-diameter step portion 7 into which the fixing plate 5 is fitted is formed on the outer peripheral portion of the outer ring 2 in the axial direction. On the inner side in the axial direction of the outer peripheral surface of the portion 7, a locking groove 8 is formed along the entire circumferential direction.

一方、固定プレート５は、図１（ｃ）及び図３（ａ）に示すように、中央に円形穴部１０を有すると共に、外形が略三角形のフランジ状をなしており、三角形状の３つの頂点側にはボルト（不図示）の挿通穴１２が形成されている。   On the other hand, as shown in FIGS. 1 (c) and 3 (a), the fixed plate 5 has a circular hole 10 at the center and has a substantially triangular flange shape. An insertion hole 12 for a bolt (not shown) is formed on the apex side.

また、図１（ａ）、図１（ｃ）、図２及び図３に示すように、固定プレート５の円形穴部１０の内周部には、パンチスペース確保のため、径方向外方へ凹んだ切り欠き部１１が、円周方向に等間隔で３つ設けられている。切り欠き部１１の内径側の面は、軸方向から見たときに、ストレート形状をなすように形成されている。また、各切り欠き部１１には、それぞれ、係止突起部６が径方向内側に突出し、外輪２の小径段部７の係止溝８に係止されるように形成されている。   Further, as shown in FIGS. 1A, 1C, 2 and 3, the inner peripheral portion of the circular hole portion 10 of the fixing plate 5 is radially outward in order to secure a punch space. Three recessed notches 11 are provided at equal intervals in the circumferential direction. A surface on the inner diameter side of the cutout portion 11 is formed to have a straight shape when viewed from the axial direction. Each notch 11 is formed with a locking projection 6 protruding radially inward and locked to a locking groove 8 of a small diameter step 7 of the outer ring 2.

これら係止突起部６は、外輪２の小径段部７に固定プレート５を外挿した後、各切り欠き部１１の縁部を順次または同時に、先端部が略矩形形状のパンチで潰し加工、すなわち、軸方向に押圧することで、径方向内側に突出させる。なお、パンチの小径段部７と対向する面は、外周面に合わせて湾曲して形成されてもよい。   These locking projections 6 are formed by extrapolating the fixing plate 5 to the small-diameter stepped portion 7 of the outer ring 2 and then crushing the edges of the notches 11 sequentially or simultaneously with a punch having a substantially rectangular shape. That is, it is made to project radially inward by pressing in the axial direction. In addition, the surface facing the small-diameter step portion 7 of the punch may be formed to be curved in accordance with the outer peripheral surface.

これにより、係止突起部６は、固定プレート５を軸方向から見たときに、パンチによって潰し加工される切り欠き部の縁部の内壁面１４がストレート形状をなすように成形されると共に、内径側先端部１３もストレート形状をなすように形成される。また、全ての係止突起部６の内径側先端部１３の中央部１３ａは、外輪２と固定プレート５が偏心状態又は傾いた状態にあっても、軸方向から見て、係止溝８と重なるように形成される。   Thereby, the locking projection 6 is shaped so that the inner wall surface 14 of the edge of the notch to be crushed by the punch has a straight shape when the fixing plate 5 is viewed from the axial direction, The inner diameter side tip portion 13 is also formed to have a straight shape. Further, the central portion 13a of the inner end 13 of the inner diameter side of all the locking projections 6 is formed with the locking groove 8 when viewed from the axial direction even when the outer ring 2 and the fixing plate 5 are in an eccentric state or inclined state. It is formed to overlap.

具体的に、図４に示すように、外輪２と固定プレート５の間の傾きや偏心により、いずれかの係止突起部６と外輪２とのかかり代（ハッチングで示した部分）が少なくなったときでも、係止突起部６の内径側先端部１３の中央部１３ａが外輪２の係止溝８に係止され、小径段部７の外周面７ａよりも内径側に位置する。   Specifically, as shown in FIG. 4, due to the inclination or eccentricity between the outer ring 2 and the fixed plate 5, the engagement margin (the portion indicated by hatching) between any of the locking projections 6 and the outer ring 2 is reduced. Even at this time, the central portion 13a of the inner diameter side distal end portion 13 of the locking projection 6 is locked in the locking groove 8 of the outer ring 2, and is positioned on the inner diameter side of the outer peripheral surface 7a of the small diameter step portion 7.

したがって、外輪２と固定プレート５の間の傾きや偏心により、係止突起部６と外輪２とのかかり代が少なくなったときでも、少なくとも係止突起部６の内径側先端部１３の中央部１３ａではしっかりかかっていることにより、外力発生時に係止突起部６の角部が欠けてしまうのをより効果的に防ぐことができるとともに、固定プレート５が非分離且つ相対回転可能に外輪２に取り付けられる。なお、係止突起部６は、できる限り応力集中とボリュームの少ない部分での接触を避けるために、小径段部７との接触は広く取り、角部は丸まっていることが望ましい。   Therefore, even when the engagement margin between the locking projection 6 and the outer ring 2 is reduced due to the inclination or eccentricity between the outer ring 2 and the fixed plate 5, at least the central portion of the inner diameter side tip 13 of the locking projection 6. By being firmly applied at 13a, it is possible to more effectively prevent the corners of the locking projections 6 from being lost when an external force is generated, and the fixing plate 5 can be non-separated and relatively rotatable to the outer ring 2. It is attached. Note that it is desirable that the locking projection 6 has a wide contact with the small-diameter step 7 and the corner is rounded in order to avoid contact at a portion where the stress concentration and the volume are as small as possible.

また、係止突起部６の内径側先端部１３の形状は、成形性や用途に合わせて調整でき、切り欠き部１１やパンチの先端形状によって、例えば、半円、楕円、Ｖ字型などが適用できる。   Further, the shape of the inner diameter side tip portion 13 of the locking projection 6 can be adjusted according to the moldability and application, and may be, for example, a semicircle, an ellipse, or a V shape depending on the notch portion 11 or the tip shape of the punch. Applicable.

（第２実施形態）
図５（ａ）は、本発明の第２実施形態に係る軸受装置の固定プレートの背面図であり、図５（ｂ）は、図５（ａ）のＶ部拡大図である。 (Second Embodiment)
Fig.5 (a) is a rear view of the fixed plate of the bearing device based on 2nd Embodiment of this invention, FIG.5 (b) is the V section enlarged view of Fig.5 (a).

第２実施形態では、凸形状を有するパンチを使用して潰し加工が施される。したがって、パンチによって潰し加工される切り欠き部１１の縁部の内壁面１４は、凹形状に形成される。   In the second embodiment, the crushing process is performed using a punch having a convex shape. Therefore, the inner wall surface 14 at the edge of the notch 11 to be crushed by the punch is formed in a concave shape.

これにより、係止突起部６の内径側先端部１３の円周方向中央部１３ａを形成する切り欠き部１１の縁部の肉が多く移動するので、潰し加工で突出させられた内径側先端部１３はより凸形状になりやすく、円周方向中央をより内径側に張り出させたいときに適している。   Thereby, since the meat | flesh of the edge part of the notch part 11 which forms the circumferential direction center part 13a of the inner diameter side front-end | tip part 13 of the latching protrusion part 6 moves, the inner diameter side front-end | tip part protruded by the crushing process No. 13 tends to be more convex, and is suitable when it is desired to project the center in the circumferential direction to the inner diameter side.

具体的に、図６に示すように、外輪２と固定プレート５の間の傾きや偏心により、いずれかの係止突起部６と外輪２とのかかり代（ハッチングで示した部分）が少なくなったときでも、係止突起部６の内径側先端部１３の中央部１３ａが外輪２の係止溝８に係止され、小径段部７の外周面７ａよりも内径側に位置する。
なお、その他の構成及び作用については、第１実施形態と同様である。 Specifically, as shown in FIG. 6, due to the inclination or eccentricity between the outer ring 2 and the fixed plate 5, the engagement margin (the portion indicated by hatching) between any of the locking projections 6 and the outer ring 2 is reduced. Even at this time, the central portion 13a of the inner diameter side distal end portion 13 of the locking projection 6 is locked in the locking groove 8 of the outer ring 2, and is positioned on the inner diameter side of the outer peripheral surface 7a of the small diameter step portion 7.
Other configurations and operations are the same as those in the first embodiment.

（第３実施形態）
図７（ａ）は、本発明の第３実施形態に係る軸受装置の固定プレートの背面図であり、図７（ｂ）は、図７（ａ）のＶＩＩ部拡大図である。 (Third embodiment)
FIG. 7A is a rear view of the fixed plate of the bearing device according to the third embodiment of the present invention, and FIG. 7B is an enlarged view of the VII portion of FIG. 7A.

第３実施形態では、切り欠き部１１の内径側の面は、軸方向から見たときに、凸形状をなすように形成されており、先端部が略矩形形状のパンチを使用して潰し加工が施される。したがって、パンチによって潰し加工される前記切り欠き部１１の縁部の内壁面１４は、ストレート形状に形成される。   In the third embodiment, the surface on the inner diameter side of the notch portion 11 is formed to have a convex shape when viewed from the axial direction, and the tip portion is crushed by using a substantially rectangular punch. Is given. Therefore, the inner wall surface 14 at the edge of the cutout portion 11 crushed by the punch is formed in a straight shape.

これにより、係止突起部６の内径側先端部１３の円周方向中央部１３ａを形成する切り欠き部１１の縁部の肉が多く移動するので、潰し加工で突出させられた内径側先端部１３はより凸形状になりやすく、円周方向中央をより内径側に張り出させたいときに適している。
なお、その他の構成及び作用については、第１実施形態と同様である。 Thereby, since the meat | flesh of the edge part of the notch part 11 which forms the circumferential direction center part 13a of the inner diameter side front-end | tip part 13 of the latching protrusion part 6 moves, the inner diameter side front-end | tip part protruded by the crushing process No. 13 tends to be more convex, and is suitable when it is desired to project the center in the circumferential direction to the inner diameter side.
Other configurations and operations are the same as those in the first embodiment.

（第４実施形態）
図８（ａ）は、本発明の第４実施形態に係る軸受装置の固定プレートの背面図であり、図８（ｂ）は、図８（ａ）のＶＩＩＩ部拡大図である。 (Fourth embodiment)
FIG. 8A is a rear view of the fixed plate of the bearing device according to the fourth embodiment of the present invention, and FIG. 8B is an enlarged view of a part VIII in FIG. 8A.

第４実施形態では、凹形状を有するパンチを使用して潰し加工が施される。したがって、パンチによって潰し加工される切り欠き部１１の縁部の内壁面１４は、凸形状に形成される。   In the fourth embodiment, the crushing process is performed using a punch having a concave shape. Therefore, the inner wall surface 14 at the edge of the notch 11 to be crushed by the punch is formed in a convex shape.

これにより、係止突起部６の内径側先端部１３の円周方向中央部１３ａを形成する切り欠き部１１の縁部の肉が少ない量で移動するので、潰し加工で突出させられた内径側先端部１３はより凹形状になりやすく、円周方向中央を、若干、外径側に凹ませたいときに適している。   Thereby, since the thickness of the edge part of the notch part 11 which forms the circumferential direction center part 13a of the inner diameter side front end part 13 of the locking projection part 6 moves with a small amount, the inner diameter side projected by the crushing process The tip portion 13 tends to be more concave, and is suitable when it is desired to slightly dent the center in the circumferential direction to the outer diameter side.

具体的に、図９に示すように、外輪２と固定プレート５の間の傾きや偏心により、いずれかの係止突起部６と外輪２とのかかり代（ハッチングで示した部分）が少なくなったときでも、係止突起部６の内径側先端部１３の中央部１３ａが外輪２の係止溝８に係止され、小径段部７の外周面７ａよりも内径側に位置する。   Specifically, as shown in FIG. 9, due to the inclination or eccentricity between the outer ring 2 and the fixed plate 5, the engagement margin (the portion indicated by hatching) between any of the locking projections 6 and the outer ring 2 is reduced. Even at this time, the central portion 13a of the inner diameter side distal end portion 13 of the locking projection 6 is locked in the locking groove 8 of the outer ring 2, and is positioned on the inner diameter side of the outer peripheral surface 7a of the small diameter step portion 7.

また、本実施形態の場合、係止突起部６の内径側先端部１３は、円弧状に形成されており、該内径側先端部１３の曲率半径は、外輪２の小径段部７の外周面７ａの曲率半径よりも大きくなっている。
なお、その他の構成及び作用については、第１実施形態と同様である。 In the present embodiment, the inner diameter side tip portion 13 of the locking projection 6 is formed in an arc shape, and the radius of curvature of the inner diameter side tip portion 13 is the outer peripheral surface of the small diameter step portion 7 of the outer ring 2. It is larger than the curvature radius of 7a.
Other configurations and operations are the same as those in the first embodiment.

（第５実施形態）
図１０（ａ）は、本発明の第４実施形態に係る軸受装置の固定プレートの背面図であり、図１０（ｂ）は、図１０（ａ）のＸ部拡大図である。 (Fifth embodiment)
FIG. 10A is a rear view of the fixed plate of the bearing device according to the fourth embodiment of the present invention, and FIG. 10B is an enlarged view of a portion X in FIG.

第５実施形態では、切り欠き部１１の内径側の面は、軸方向から見たときに、凹形状をなすように形成されており、先端部が略矩形形状のパンチを使用して潰し加工が施される。したがって、パンチによって潰し加工される前記切り欠き部１１の縁部の内壁面１４は、ストレート形状に形成される。   In the fifth embodiment, the surface on the inner diameter side of the notch portion 11 is formed to have a concave shape when viewed from the axial direction, and the tip portion is crushed by using a punch having a substantially rectangular shape. Is given. Therefore, the inner wall surface 14 at the edge of the cutout portion 11 crushed by the punch is formed in a straight shape.

これにより、係止突起部６の内径側先端部１３の円周方向中央部１３ａを形成する切り欠き部１１の縁部の肉が少ない量で移動するので、潰し加工で突出させられた内径側先端部１３はより凹形状になりやすく、円周方向中央をより外径側に凹ませたいときに適している。   Thereby, since the thickness of the edge part of the notch part 11 which forms the circumferential direction center part 13a of the inner diameter side front end part 13 of the locking projection part 6 moves with a small amount, the inner diameter side projected by the crushing process The distal end portion 13 tends to be more concave and is suitable when it is desired to dent the center in the circumferential direction to the outer diameter side.

具体的に、図１１に示すように、外輪２と固定プレート５の間の傾きや偏心により、いずれかの係止突起部６と外輪２とのかかり代（ハッチングで示した部分）が少なくなったときでも、係止突起部６の内径側先端部１３の全体が外輪２の係止溝８に係止され、小径段部７の外周面７ａよりも内径側に位置する。   Specifically, as shown in FIG. 11, due to the inclination and eccentricity between the outer ring 2 and the fixed plate 5, the engagement margin (the portion indicated by hatching) between any of the locking projections 6 and the outer ring 2 is reduced. Even in this case, the entire inner diameter side tip 13 of the locking projection 6 is locked in the locking groove 8 of the outer ring 2 and is positioned on the inner diameter side of the outer peripheral surface 7 a of the small diameter stepped portion 7.

また、本実施形態の場合、係止突起部６の内径側先端部１３は、該内径側先端部１３の曲率半径と、外輪２の小径段部７の外周面７ａの曲率半径とは、略同じになり、係止溝８の外周面の形状と近い形状とすることができる。
なお、その他の構成及び作用については、第１実施形態と同様である。 In the case of the present embodiment, the inner diameter side distal end portion 13 of the locking projection 6 is substantially equal to the curvature radius of the inner diameter side distal end portion 13 and the curvature radius of the outer peripheral surface 7 a of the small diameter step portion 7 of the outer ring 2. It becomes the same and can be set as the shape close | similar to the shape of the outer peripheral surface of the locking groove 8. FIG.
Other configurations and operations are the same as those in the first embodiment.

なお、本発明の内輪、外輪、転動体、軸受、固定プレート、係止溝、係止突起部、小径段部等の構成は、上記実施形態に例示したものに限定されるものではなく、本発明の要旨を逸脱しない範囲において適宜変更可能である。   The configurations of the inner ring, outer ring, rolling element, bearing, fixing plate, locking groove, locking projection, small diameter step, etc. of the present invention are not limited to those illustrated in the above embodiment, Modifications can be made as appropriate without departing from the scope of the invention.

例えば、上記実施形態では、固定プレート５の内周部に３箇所の係止突起部６及び切り欠き部１１を形成した場合を例示したが、これに限定されず、固定プレート５の内周部に４箇所以上の係止突起部６及び切り欠き部１１を形成してもよい。
また、上記実施形態では、小径段部７の外周面の周方向に全周に係止溝８を形成した場合を例示したが、これに限定されず、例えば、小径段部７の外周面の複数箇所に周方向に延びる係止溝を形成するようにしてもよい。 For example, in the above embodiment, the case where the three locking projections 6 and the notches 11 are formed on the inner peripheral portion of the fixed plate 5 is illustrated, but the present invention is not limited to this, and the inner peripheral portion of the fixed plate 5 Four or more locking projections 6 and notches 11 may be formed.
Moreover, in the said embodiment, although the case where the locking groove 8 was formed in the perimeter of the outer peripheral surface of the small diameter step part 7 was illustrated, it is not limited to this, For example, of the outer peripheral surface of the small diameter step part 7 Locking grooves extending in the circumferential direction may be formed at a plurality of locations.

１ 内輪
２ 外輪
３ 転動体
４ 転がり軸受
５ 固定プレート
６ 係止突起部
７ 小径段部
８ 係止溝
９ 軸受装置
１０ 円形穴部
１１ 切り欠き部
１２ 挿通穴
１３ 内径側先端部
１４ 内壁面 DESCRIPTION OF SYMBOLS 1 Inner ring 2 Outer ring 3 Rolling element 4 Rolling bearing 5 Fixed plate 6 Locking projection part 7 Small diameter step part 8 Locking groove 9 Bearing apparatus 10 Circular hole part 11 Notch part 12 Insertion hole 13 Inner diameter side front end part 14 Inner wall surface

Claims (6)

内輪と外輪との間に複数の転動体が配設された転がり軸受と、該転がり軸受をハウジングに固定すべく、前記転がり軸受の前記外輪の外周面に嵌合される円形穴部を有する固定プレートと、を備え、
前記外輪の軸方向の端部外周部には、前記固定プレートが嵌合される小径段部が設けられるとともに、該小径段部の外周面に円周方向に延びる係止溝が形成され、
前記固定プレートの円形穴部の内周部には、少なくとも３箇所の切り欠き部が設けられるとともに、該各切り欠き部には、径方向内側にそれぞれ突出し、前記係止溝に係止される係止突起部が形成され、
前記係止突起部は、径方向内側に真っ直ぐに突出し、
前記係止突起部の内径側先端部は、ストレート形状、または凹形状に形成され、
前記係止突起部の前記内径側先端部の少なくとも周方向中央部は、前記外輪と前記固定プレートが偏心状態又は傾いた状態にあっても、軸方向から見て、前記係止溝と重なり、
前記固定プレートは、前記外輪に対し非分離且つ相対回転可能に取り付けられることを特徴とする軸受装置。 A rolling bearing in which a plurality of rolling elements are disposed between an inner ring and an outer ring, and a fixing having a circular hole fitted to the outer peripheral surface of the outer ring of the rolling bearing so as to fix the rolling bearing to the housing A plate, and
A small-diameter step portion to which the fixing plate is fitted is provided on the outer peripheral portion of the outer ring in the axial direction, and a locking groove extending in the circumferential direction is formed on the outer peripheral surface of the small-diameter step portion,
At least three notch portions are provided on the inner peripheral portion of the circular hole portion of the fixing plate, and each notch portion projects radially inward and is locked in the locking groove. A locking projection is formed,
The locking projection protrudes straight inward in the radial direction,
The inner diameter side tip of the locking projection is formed in a straight shape or a concave shape,
At least the circumferential direction central portion of the inner diameter side distal end portion of the engaging protrusion, even in a state where the fixing plate and the outer ring eccentrically or inclined, as viewed in the axial direction, and it heavy the locking groove The
The fixed plate is attached to the outer ring so as to be non-separable and relatively rotatable . 凹形状に形成された前記係止突起部の前記内径側先端部の曲率半径は、前記外輪の前記小径段部の外周面の曲率半径より大きいことを特徴とする請求項１に記載の軸受装置。2. The bearing device according to claim 1, wherein the radius of curvature of the distal end portion on the inner diameter side of the locking projection formed in a concave shape is larger than the radius of curvature of the outer peripheral surface of the small diameter step portion of the outer ring. . 凹形状に形成された前記係止突起部の前記内径側先端部の曲率半径は、前記外輪の前記小径段部の外周面の曲率半径と略同一であることを特徴とする請求項１に記載の軸受装置。The radius of curvature of the inner diameter side tip of the locking projection formed in a concave shape is substantially the same as the radius of curvature of the outer peripheral surface of the small diameter step of the outer ring. Bearing device. 内輪と外輪との間に複数の転動体が配設された転がり軸受と、該転がり軸受をハウジングに固定すべく、前記転がり軸受の前記外輪の外周面に嵌合される円形穴部を有する固定プレートと、を備え、
前記外輪の軸方向の端部外周部には、前記固定プレートが嵌合される小径段部が設けられるとともに、該小径段部の外周面に円周方向に延びる係止溝が形成され、
前記固定プレートの円形穴部の内周部には、少なくとも３箇所の切り欠き部が設けられるとともに、該各切り欠き部には、径方向内側にそれぞれ突出し、前記係止溝に係止される係止突起部が形成される軸受装置を製造する方法であって、
前記外輪の前記小径段部に前記固定プレートを外挿した後に、前記固定プレートの円形穴部の開口縁部のうち、前記各切り欠き部の縁部を、パンチで軸方向から潰し加工することにより、径方向内側に突出する係止突起部が形成され、
前記パンチによって潰し加工されたことにより、径方向内側に突出する前記係止突起部は、真っ直ぐに突出し、
前記パンチによって潰し加工されたことにより、径方向内側に突出する前記係止突起部の内径側先端部は、ストレート形状、または凹形状に形成され、
前記係止突起部の前記内径側先端部の少なくとも周方向中央部は、前記外輪と前記固定プレートが偏心状態又は傾いた状態にあっても、軸方向から見て、前記係止溝と重なり、
前記固定プレートは、前記外輪に対し非分離且つ相対回転可能に取り付けられることを特徴とする軸受装置の製造方法。 A rolling bearing in which a plurality of rolling elements are disposed between an inner ring and an outer ring, and a fixing having a circular hole fitted to the outer peripheral surface of the outer ring of the rolling bearing so as to fix the rolling bearing to the housing A plate, and
A small-diameter step portion to which the fixing plate is fitted is provided on the outer peripheral portion of the outer ring in the axial direction, and a locking groove extending in the circumferential direction is formed on the outer peripheral surface of the small-diameter step portion,
At least three notch portions are provided on the inner peripheral portion of the circular hole portion of the fixing plate, and each notch portion projects radially inward and is locked in the locking groove. A method of manufacturing a bearing device in which a locking projection is formed,
After the fixing plate is extrapolated to the small-diameter step portion of the outer ring, the edge portion of each notch portion of the opening edge portion of the circular hole portion of the fixing plate is crushed from the axial direction with a punch. Due to this, a locking projection protruding radially inward is formed,
By being crushed by the punch, the locking protrusion protruding radially inward protrudes straightly,
By being crushed by the punch, the inner diameter side tip of the locking projection protruding radially inward is formed into a straight shape or a concave shape,
At least the circumferential direction central portion of the inner diameter side distal end portion of the engaging protrusion, even in a state where the fixing plate and the outer ring eccentrically or inclined, as viewed in the axial direction, and it heavy the locking groove The
The method for manufacturing a bearing device, wherein the fixing plate is attached to the outer ring so as to be non-separable and relatively rotatable . 凹形状に形成された前記係止突起部の前記内径側先端部の曲率半径を、前記外輪の前記小径段部の外周面の曲率半径より大きく設けることを特徴とする請求項４に記載の軸受装置。The bearing according to claim 4, wherein a radius of curvature of the distal end portion on the inner diameter side of the locking projection formed in a concave shape is larger than a radius of curvature of the outer peripheral surface of the small diameter step portion of the outer ring. apparatus. 凹形状に形成された前記係止突起部の前記内径側先端部の曲率半径を、前記外輪の前記小径段部の外周面の曲率半径と略同一に設けることを特徴とする請求項４に記載の軸受装置。The curvature radius of the said inner diameter side front-end | tip part of the said latching protrusion part formed in the concave shape is provided substantially the same as the curvature radius of the outer peripheral surface of the said small diameter step part of the said outer ring | wheel. Bearing device.
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