JP2007211893A - Fixing structure of bearing ring and seal member of rolling bearing - Google Patents

Fixing structure of bearing ring and seal member of rolling bearing Download PDF

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JP2007211893A
JP2007211893A JP2006032576A JP2006032576A JP2007211893A JP 2007211893 A JP2007211893 A JP 2007211893A JP 2006032576 A JP2006032576 A JP 2006032576A JP 2006032576 A JP2006032576 A JP 2006032576A JP 2007211893 A JP2007211893 A JP 2007211893A
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Prior art keywords
mounting groove
seal
seal mounting
ring
bearing
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JP2006032576A
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Toshihiko Shiraki
利彦 白木
Junpei Kanbara
淳平 蒲原
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JTEKT Corp
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JTEKT Corp
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Priority to JP2006032576A priority Critical patent/JP2007211893A/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
    • 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
    • F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
    • F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
    • F16C33/7846—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with a gap between the annular disc and the inner race
    • F16C33/785—Bearing shields made of sheet metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • 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
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • F16C33/783—Details of the sealing or parts thereof, e.g. geometry, material of the mounting region
    • 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
    • F16C43/045—Mounting or replacing seals
    • 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

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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixing structure of a bearing ring and a seal member of a rolling bearing, capable of surely preventing idle rotation and falling-off of the seal member from the bearing ring of the rolling bearing, by reducing a variation by an individual difference. <P>SOLUTION: An installation part 14 of a shield plate 6 is fitted and fixed to a seal installing groove 12 of an outer ring 1. The installation part 14 is composed of a bending part 21 and an annular part 22 having a base part continuing with its bending part 21 and having the tip 20 substantially abutting on the bending part 21. In a half cross section in the axial direction, the annular part 22 is supported by two points of an inner surface 18 of the seal installing groove 12. The bending part 21 is supported by the inner surface 18. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、転がり軸受の軌道輪とシール部材との固定構造に関する。   The present invention relates to a structure for fixing a bearing ring and a seal member of a rolling bearing.

従来、転がり軸受の軌道輪とシール部材との固定構造としては、特開平８−１３５６６７号公報（特許文献１）に記載されている玉軸受の外輪とシールド板との固定構造がある。上記シールド板の一端部は、略Ｕ字状に折り曲げられており、軸方向の断面において断面略９字状の形状を有している。この固定構造は、上記外輪の内周面に形成された環状のシール取付溝に、略９字状の断面形状を有する上記一端部における径方向の外方の部分を嵌入固定して、形成されている。この固定構造では、上記外輪の軸方向の断面における上記軌道輪の中心軸よりも片側に位置する部分において、シールド板を、上記シール取付溝の内面の２点に接触させて、シールド板を上記シール取付溝に固定している。   Conventionally, as a structure for fixing a bearing ring of a rolling bearing and a seal member, there is a structure for fixing an outer ring of a ball bearing and a shield plate described in JP-A-8-135667 (Patent Document 1). One end of the shield plate is bent into a substantially U shape, and has a substantially 9-shaped cross section in the axial cross section. This fixing structure is formed by inserting and fixing a radially outer portion of the one end portion having a substantially 9-shaped cross-section into an annular seal mounting groove formed on the inner peripheral surface of the outer ring. ing. In this fixing structure, the shield plate is brought into contact with two points on the inner surface of the seal mounting groove at a portion located on one side of the central axis of the raceway in the axial section of the outer ring, and the shield plate is It is fixed in the seal mounting groove.

しかしながら、上記従来の固定構造では、シールド板と外輪との固定の良し悪しが個体差によって大きくばらつくという問題がある。また、シールド板の肉厚が薄い場合に、上記シールド板の空転や脱落が発生する場合がある。
特開平８−１３５６６７号公報 However, the conventional fixing structure has a problem in that the fixing between the shield plate and the outer ring varies greatly depending on individual differences. Further, when the shield plate is thin, the shield plate may slip or fall off.
JP-A-8-135667

そこで、本発明の課題は、個体差によるばらつきが小さくて、転がり軸受の軌道輪からのシール部材の空転や脱落を確実に防止できる転がり軸受の軌道輪とシール部材との固定構造を提供することにある。   Accordingly, an object of the present invention is to provide a fixing structure between a bearing ring of a rolling bearing and a seal member that can prevent the idling or dropping of the seal member from the bearing ring of the rolling bearing with less variation due to individual differences. It is in.

上記課題を解決するため、この発明の転がり軸受の軌道輪とシール部材との固定構造は、
環状のシール取付溝を有する軌道輪と、
取付部と、シール部とを有するシール部材と
を備え、
上記取付部は、
屈曲部と、その屈曲部に基部が連なると共に、先端が上記屈曲部に実質的に当接する環状部とを有し
上記軌道輪の軸方向の断面における上記軌道輪の中心軸よりも片側に位置する部分において、上記環状部は、上記シール取付溝の内面の２点に当接して支持されると共に、上記屈曲部は、上記シール取付溝の上記内面に当接して支持されて、上記シール部材は、計３点で上記シール取付溝に取り付けられていることを特徴としている。 In order to solve the above-mentioned problem, the fixing structure of the bearing ring and the seal member of the rolling bearing of the present invention is
A bearing ring having an annular seal mounting groove;
A mounting member and a seal member having a seal portion;
The mounting part is
A bent portion and a base portion that is continuous with the bent portion, and an annular portion whose tip is substantially in contact with the bent portion, and located on one side of the center axis of the race ring in the axial section of the race ring The annular portion is supported in contact with two points on the inner surface of the seal mounting groove, and the bent portion is supported in contact with the inner surface of the seal mounting groove. Is characterized in that it is attached to the seal mounting groove at a total of three points.

尚、上記先端と上記屈曲部との間に、スプリングバックに起因する小さなクリアランスが存在している場合も、上記「実質的に当接する」という文言の範疇に含まれるものとする。また、上記「内面の２点に当接して支持され」とは、少なくとも内面の２点に当接して支持されるという意味であり、内面の３点以上に当接して支持されている場合も、「内面の２点に当接して支持され」という文言の範疇に含まれるものとする。また、同様に、上記「内面に当接して支持され」とは、少なくとも内面の１点に当接して支持されるという意味であり、内面の２点以上に当接して支持されている場合も、「内面に当接して支持され」という文言の範疇に含まれるものとする。   Note that a case where a small clearance due to a springback exists between the tip and the bent portion is also included in the category of the term “substantially abut”. Further, “supported by contacting two points on the inner surface” means that it is supported by contacting at least two points on the inner surface, and may be supported by contacting at least three points on the inner surface. , It is included in the category of the phrase “supported by contacting two points on the inner surface”. Similarly, the phrase “supported by being in contact with the inner surface” means that it is supported by being in contact with at least one point on the inner surface, and may be supported by being in contact with two or more points on the inner surface. , It is included in the category of the phrase “supported in contact with the inner surface”.

本発明によれば、上記軌道輪の軸方向の断面における上記軌道輪の中心軸よりも片側に位置する部分において、上記環状部が上記シール取付溝の内面の２点に当接して支持されているので、上記環状部を、上記内面の２点の夫々からの反力で内面に確実に支持できる。したがって、環状部をシール取付溝に確実に固定することができる。   According to the present invention, the annular portion is in contact with and supported by two points on the inner surface of the seal mounting groove at a portion located on one side of the center axis of the raceway in the axial cross section of the raceway. Therefore, the annular portion can be reliably supported on the inner surface by reaction forces from two points on the inner surface. Therefore, the annular portion can be reliably fixed to the seal mounting groove.

また、本発明によれば、上記軌道輪の軸方向の断面における上記軌道輪の中心軸よりも片側に位置する部分において、上記屈曲部が、上記シール取付溝の上記内面に当接して支持されているので、屈曲部および環状部に、内面における上記屈曲部が当接している点と、上記２点のうちの軸方向の外方に位置する一方の点とからの、近似的に互いに向きが逆の２つの反力が作用し、屈曲部および環状部を、この２つの反力で内面に確実に支持できる。したがって、屈曲部および環状部を、シール取付溝に確実に固定することができる。   Further, according to the present invention, the bent portion is supported in contact with the inner surface of the seal mounting groove at a portion located on one side of the center axis of the bearing ring in a cross section in the axial direction of the bearing ring. Therefore, the bent portion and the annular portion are approximately directed to each other from the point where the bent portion on the inner surface is in contact with one of the two points located outward in the axial direction. However, two reaction forces opposite to each other act, and the bent portion and the annular portion can be reliably supported on the inner surface by the two reaction forces. Therefore, the bent portion and the annular portion can be reliably fixed to the seal mounting groove.

また、本発明の構造は、上記環状部を形成して上記先端を上記屈曲部で拘束した後、環状部をシール取付溝に押し込むと共に、上記屈曲部を上記内面の所定の箇所に当接するようにカシメて形成することができる。このことから、環状部を、シール取付溝に密着させることができると共に、上記屈曲部の位置決めを正確に行うことができて、環状部をシール取付溝に確実に固定できると共に、個体差に起因するばらつきを格段に小さくできる。   In the structure of the present invention, the annular portion is formed and the tip is constrained by the bent portion, and then the annular portion is pushed into the seal mounting groove and the bent portion is brought into contact with a predetermined portion of the inner surface. It can be formed by crimping. As a result, the annular portion can be brought into close contact with the seal mounting groove, the positioning of the bent portion can be accurately performed, the annular portion can be securely fixed to the seal mounting groove, and due to individual differences. Variation can be significantly reduced.

本発明の転がり軸受の軌道輪とシール部材との固定構造によれば、軌道輪の軸方向の断面における軌道輪の中心軸よりも片側に位置する部分において、環状部がシール取付溝の内面の２点に当接して支持されているので、環状部を、内面の２点の夫々からの反力で、内面に確実に支持できて、環状部をシール取付溝に確実に固定することができる。   According to the fixing structure of the bearing ring and the seal member of the rolling bearing of the present invention, the annular portion is formed on the inner surface of the seal mounting groove in the portion located on one side of the center axis of the bearing ring in the axial section of the bearing ring. Since it is supported in contact with two points, the annular portion can be reliably supported on the inner surface by reaction forces from the two points on the inner surface, and the annular portion can be securely fixed to the seal mounting groove. .

また、本発明の転がり軸受の軌道輪とシール部材との固定構造によれば、上記片側に位置する部分において、屈曲部が、シール取付溝の内面に当接して支持されているので、屈曲部および環状部を、内面における上記屈曲部が当接している点と、上記２点のうちの軸方向の外方に位置する一方の点とからの、近似的に互いに向きが逆の２つの反力で支持できて、屈曲部および環状部を、シール取付溝に確実に固定することができる。   Further, according to the structure for fixing the bearing ring and the seal member of the rolling bearing according to the present invention, the bent portion is supported in contact with the inner surface of the seal mounting groove in the portion located on the one side. And the annular portion, two points of approximately opposite directions from the point where the bent portion is in contact with the inner surface and one of the two points located outward in the axial direction. The bent portion and the annular portion can be securely fixed to the seal mounting groove.

また、本発明の転がり軸受の軌道輪とシール部材との固定構造は、上記環状部を形成して上記先端を上記屈曲部で拘束した後、環状部をシール取付溝に押し込むと共に、上記屈曲部を上記内面の所定の箇所に当接するようにカシメて形成することができる。このことから、環状部を、シール取付溝に密着させることができると共に、上記屈曲部の位置決めを正確に行うことができて、環状部をシール取付溝に確実に固定できると共に、個体差に起因するばらつきを格段に小さくできる。   Further, in the fixing structure of the bearing ring and the seal member of the rolling bearing according to the present invention, the annular portion is formed and the tip is restrained by the bent portion, and then the annular portion is pushed into the seal mounting groove and the bent portion is Can be formed by caulking so as to come into contact with a predetermined portion of the inner surface. As a result, the annular portion can be brought into close contact with the seal mounting groove, the positioning of the bent portion can be accurately performed, the annular portion can be securely fixed to the seal mounting groove, and due to individual differences. Variation can be significantly reduced.

以下、本発明を図示の形態により詳細に説明する。   Hereinafter, the present invention will be described in detail with reference to the drawings.

図１は、本発明の転がり軸受の軌道輪とシール部材との固定構造の第１実施形態を含む玉軸受の軸方向の半断面図（外輪の軸方向の断面における外輪の中心軸よりも片側に位置する部分）である。   FIG. 1 is a half sectional view of an axial direction of a ball bearing including a first embodiment of a structure for fixing a bearing ring and a seal member of a rolling bearing according to the present invention (one side of a central axis of an outer ring in an axial section of an outer ring) The part located in

この玉軸受は、外輪１と、内輪２と、玉３と、シール部材の一例としてのシールド板６とを有する。上記外輪１は、内周面に軌道溝１１を有すると共に、内周面の軌道溝１１の軸方向の外方に環状のシール取付溝１２を有し、内輪２は、外周面に軌道溝１３を有している。上記玉３は、外輪１の軌道溝１１と、内輪２の軌道溝１３との間に、保持器５で保持された状態で、周方向に一定の間隔を隔てられて複数配置されている。また、シールド板６は、取付部１４と、シール部１５とを有し、取付部１４は、外輪１のシール取付溝１２に嵌入固定されている。また、上記シール部１５は、シールド板６の取付部側とは反対側の端部であり、内輪２の外周面に対して径方向に間隔をおいて位置している。上記シール部１５と、内輪２の外周面とは、ラビリンスシールを構成している。上記外輪1と、この外輪1のシール取付溝１２に固定されたシールド板６とは、本発明の転がり軸受の軌道輪とシール部材との固定構造の一実施形態を構成している。   This ball bearing has an outer ring 1, an inner ring 2, a ball 3, and a shield plate 6 as an example of a seal member. The outer ring 1 has a raceway groove 11 on the inner peripheral surface and an annular seal mounting groove 12 on the outer side in the axial direction of the raceway groove 11 on the inner peripheral surface, and the inner ring 2 has a raceway groove 13 on the outer peripheral surface. have. A plurality of the balls 3 are arranged between the raceway groove 11 of the outer ring 1 and the raceway groove 13 of the inner ring 2 while being held by the cage 5 with a certain interval in the circumferential direction. Further, the shield plate 6 has an attachment portion 14 and a seal portion 15, and the attachment portion 14 is fitted and fixed in the seal attachment groove 12 of the outer ring 1. Further, the seal portion 15 is an end portion on the side opposite to the attachment portion side of the shield plate 6, and is located at a radial interval with respect to the outer peripheral surface of the inner ring 2. The seal portion 15 and the outer peripheral surface of the inner ring 2 constitute a labyrinth seal. The outer ring 1 and the shield plate 6 fixed to the seal mounting groove 12 of the outer ring 1 constitute an embodiment of a fixing structure for the bearing ring and the seal member of the rolling bearing of the present invention.

図２は、図１における外輪１のシール取付溝１２の周辺の部分拡大断面図である。   FIG. 2 is a partially enlarged sectional view of the periphery of the seal mounting groove 12 of the outer ring 1 in FIG.

図２に示すように、上記シールド板６の取付部１４は、屈曲部２１と、その屈曲部２１に基部が連なる環状部２２とを有している。   As shown in FIG. 2, the mounting portion 14 of the shield plate 6 has a bent portion 21 and an annular portion 22 having a base portion continuous to the bent portion 21.

上記屈曲部２１は、シール取付溝１２の軸方向の内方の縁からシール取付溝１２の底に向かってシール取付溝１２の内面に沿って延在する第１部分と、シール取付溝１２の内面の法線方向に略延在する第２部分とから成り、断面略く字状の形状を有している。上記第１部分は、外輪１の中心軸に対して片側に位置する軸方向の半端面において、シール取付溝１２の内面１８の第１箇所２５に当接して支持されている。   The bent portion 21 includes a first portion extending along the inner surface of the seal mounting groove 12 from the inner edge in the axial direction of the seal mounting groove 12 toward the bottom of the seal mounting groove 12, and the seal mounting groove 12. It consists of a second portion that extends substantially in the normal direction of the inner surface, and has a substantially U-shaped cross section. The first portion is supported in contact with the first portion 25 of the inner surface 18 of the seal mounting groove 12 on an axial half end surface located on one side with respect to the central axis of the outer ring 1.

上記環状部２２は、上記第２部分における内面１８とは反対側の端に連なっている。上記環状部２２は、シール取付溝１２の軸方向の外方の縁から軸方向の内方の縁までシール取付溝１２の内面１８に沿って延在する部分を有している。上記環状部２２は、屈曲部２１の軸方向の内側の表面に実質的に当接している先端２０を有している。上記環状部２２は、上記半端面において、シール取付溝１２の内面１８の第２箇所２６および第３箇所２７に当接して支持されている。このように、上記シールド板６は、上記半断面において、計３点でシール取付溝１２の内面１８に当接して支持され、シール取付溝１２に取り付けられている。   The annular portion 22 is connected to the end of the second portion opposite to the inner surface 18. The annular portion 22 has a portion extending along the inner surface 18 of the seal mounting groove 12 from the outer edge in the axial direction of the seal mounting groove 12 to the inner edge in the axial direction. The annular portion 22 has a tip 20 that is substantially in contact with the inner surface of the bent portion 21 in the axial direction. The annular portion 22 is supported in contact with the second location 26 and the third location 27 of the inner surface 18 of the seal mounting groove 12 at the half end surface. As described above, the shield plate 6 is supported in contact with the inner surface 18 of the seal mounting groove 12 at a total of three points in the half section, and is mounted on the seal mounting groove 12.

図３Ａおよび図３Ｂは、シールド板６を、外輪１のシール取付溝１２へ固定するときの手順を示す図である。図３Ａおよび図３Ｂにおいて、３１は、カシメ治具を示している。カシメ治具３１は、シール取付溝１２よりも軸方向の外方に位置する外輪１の内周面３５の内径と略等しい外径を有する外周面３２を有すると共に、軸方向の端面に軸方向に突出する突出部３３を有している。以下に、図３Ａおよび図３Ｂに基づいて、外輪１のシール取付溝１２へのシールド板６の固定方法を説明する。   3A and 3B are diagrams showing a procedure for fixing the shield plate 6 to the seal mounting groove 12 of the outer ring 1. In FIG. 3A and FIG. 3B, 31 has shown the crimping jig | tool. The crimping jig 31 has an outer peripheral surface 32 having an outer diameter substantially equal to the inner diameter of the inner peripheral surface 35 of the outer ring 1 positioned on the outer side in the axial direction relative to the seal mounting groove 12, and is axially disposed on an end surface in the axial direction. It has the protrusion part 33 which protrudes. Below, based on FIG. 3A and FIG. 3B, the fixing method of the shield board 6 to the seal attachment groove | channel 12 of the outer ring | wheel 1 is demonstrated.

先ず、図３Ａに示すように、半断面において、断面略７の字状で、７の字の後部の一箇所が前方側に屈曲している、カシメ前のシールド板６を、７の字の前部を外輪１の軸方向の内方側に向けた状態で、シールド板６の前部がシール取付溝１２の軸方向の内方の内面に当接する迄、シール取付溝１２に接近させる。   First, as shown in FIG. 3A, the shield plate 6 before caulking, in which a half of the cross section has a substantially 7-shaped cross section and one part of the rear part of the 7-shape is bent forward, With the front portion facing the inner side in the axial direction of the outer ring 1, the shield mounting groove 12 is brought close to the front portion of the shield plate 6 until it abuts against the inner surface of the seal mounting groove 12 in the axial direction.

次に、上記カシメ治具３１で、シールド板６のカシメを遂行する。詳細には、図３Ｂに示すように、外輪１の内周面３５に、カシメ治具３１の外周面３２を嵌合させるように、シールド板６の上記前方側に屈曲している部分を、カシメ治具３１の突出部３３によって略軸方向の内方に移動させて、シール取付溝１２の内面１８における軸方向の内方に位置する第１箇所２５に当接させる。   Next, the caulking jig 31 performs caulking of the shield plate 6. Specifically, as shown in FIG. 3B, a portion bent to the front side of the shield plate 6 so as to fit the outer peripheral surface 32 of the crimping jig 31 to the inner peripheral surface 35 of the outer ring 1, The caulking jig 31 is moved inward in the substantially axial direction by the projecting portion 33 and is brought into contact with the first location 25 located inward in the axial direction on the inner surface 18 of the seal mounting groove 12.

このカシメを遂行している最中、シールド板６の先端２０が、屈曲部２１の軸方向の内方の表面に接触するように変形して環状部２２が形成され、先端２０が屈曲部２１の上記表面によって拘束された状態で（環状部２２を保持した状態で）、環状部２２をシール取付溝１２内に押し込んで、環状部２２をシール取付溝１２の内面１８に密着させるようにする。すなわち、環状部２２を、シール取付溝１２の内面１８の第２箇所２６および第３箇所２７で当接支持するようになっている。このように、先端２０を屈曲部２１で拘束した状態で、すなわち、先端２０が屈曲部２１に対して移動しない状態で、環状部２２をシール取付溝１２に押し込むので、半断面において、環状部２２の少なくとも２箇所を確実にシール取付溝１２の内面に当接させることができて、シールド板６を、シール取付溝１２に確実に固定することができる。   During this caulking, the tip 20 of the shield plate 6 is deformed so as to contact the inner surface in the axial direction of the bent portion 21 to form an annular portion 22, and the tip 20 is bent to the bent portion 21. In a state of being constrained by the above surface (with the annular portion 22 held), the annular portion 22 is pushed into the seal mounting groove 12 so that the annular portion 22 is brought into close contact with the inner surface 18 of the seal mounting groove 12. . That is, the annular portion 22 is abutted and supported at the second location 26 and the third location 27 of the inner surface 18 of the seal mounting groove 12. As described above, the annular portion 22 is pushed into the seal mounting groove 12 in a state where the distal end 20 is constrained by the bent portion 21, that is, in a state where the distal end 20 does not move with respect to the bent portion 21. At least two locations 22 can be reliably brought into contact with the inner surface of the seal mounting groove 12, and the shield plate 6 can be reliably fixed to the seal mounting groove 12.

上記第１実施形態の外輪１とシールド板６との固定構造によれば、外輪１の軸方向の断面における外輪１の中心軸よりも片側に位置する部分（半断面）において、環状部２２がシール取付溝１２の内面１８の２点に当接して支持されているので、環状部２２を、内面１８の２点の夫々からの反力で内面１８に確実に支持できる。したがって、環状部２２をシール取付溝１８に確実に固定することができる。   According to the fixing structure between the outer ring 1 and the shield plate 6 of the first embodiment, the annular portion 22 is formed in a portion (half-section) located on one side of the central axis of the outer ring 1 in the axial section of the outer ring 1. Since the seal mounting groove 12 is supported in contact with two points on the inner surface 18, the annular portion 22 can be reliably supported on the inner surface 18 by reaction forces from the two points on the inner surface 18. Therefore, the annular portion 22 can be reliably fixed to the seal mounting groove 18.

また、上記第１実施形態の外輪１とシールド板６との固定構造によれば、半断面において、屈曲部２１が、シール取付溝１８の内面１８に当接して支持されているので、屈曲部２１および環状部２２に、内面１８における屈曲部２１が当接している点と、上記２点のうちの軸方向の外方に位置する一方の点とからの、近似的に互いに向きが逆の２つの反力が作用し、屈曲部２１および環状部２２を、この２つの反力で内面１８に確実に支持できる。したがって、屈曲部２１および環状部２２を、シール取付溝１８に確実に固定することができる。   Further, according to the fixing structure between the outer ring 1 and the shield plate 6 of the first embodiment, the bent portion 21 is supported in contact with the inner surface 18 of the seal mounting groove 18 in the half cross section. 21 and the annular portion 22 are approximately opposite in direction from the point where the bent portion 21 of the inner surface 18 abuts and one of the two points located outside in the axial direction. Two reaction forces act, and the bent portion 21 and the annular portion 22 can be reliably supported on the inner surface 18 by the two reaction forces. Therefore, the bent portion 21 and the annular portion 22 can be reliably fixed to the seal mounting groove 18.

また、上記第１実施形態の構造は、環状部２２を形成して先端２０を屈曲部２１で拘束した後、環状部２２をシール取付溝１２に押し込むと共に、屈曲部２１を内面１８の所定の箇所（第１実施形態では、第１箇所２５）に当接するようにカシメて、形成されている。したがって、環状部２２を、シール取付溝１８に密着させることができると共に、屈曲部２１の位置決めを正確に行うことができて、環状部２２をシール取付溝１２に確実に固定できると共に、個体差に起因するばらつきを格段に小さくできる。   In the structure of the first embodiment, after the annular portion 22 is formed and the tip 20 is constrained by the bent portion 21, the annular portion 22 is pushed into the seal mounting groove 12, and the bent portion 21 is fixed to the predetermined inner surface 18. It is formed by crimping so as to come into contact with the location (first location 25 in the first embodiment). Therefore, the annular portion 22 can be brought into close contact with the seal mounting groove 18, the bending portion 21 can be accurately positioned, and the annular portion 22 can be securely fixed to the seal mounting groove 12. The variation caused by can be significantly reduced.

尚、上記第１実施形態の外輪１とシールド板６との固定構造によれば、シール部材が、金属製のシールド板６であったが、この発明では、シール部材は、金属製の芯金部と、弾性部とからなる構造であっても良い。   Incidentally, according to the fixing structure of the outer ring 1 and the shield plate 6 of the first embodiment, the seal member is the metal shield plate 6, but in this invention, the seal member is a metal cored bar. The structure which consists of a part and an elastic part may be sufficient.

また、上記第１実施形態の外輪１とシールド板６との固定構造によれば、シールド板６の取付部側とは反対側の端部が、シールド板６が取り付けられている軌道輪（第１実施形態では、外輪１）に対向する軌道輪（第１実施形態では、内輪２）の外周面に対して径方向に間隔をおいて位置し、この端部と、上記対向する軌道輪の外周面とがラビリンスシールを形成していたが、この発明では、シール部材における取付部側とは反対側の端部が、シール部材が取り付けられている軌道輪に対向する軌道輪に対して摺動する構造であっても良い。   Moreover, according to the fixing structure of the outer ring 1 and the shield plate 6 of the first embodiment, the end of the shield plate 6 opposite to the attachment portion side has a bearing ring (first ring) to which the shield plate 6 is attached. In one embodiment, the outer ring 1) is positioned at an interval in the radial direction with respect to the outer peripheral surface of the bearing ring (in the first embodiment, the inner ring 2). Although the outer peripheral surface forms a labyrinth seal, in this invention, the end of the seal member opposite to the mounting portion side slides with respect to the bearing ring facing the bearing ring to which the seal member is attached. It may be a moving structure.

また、上記第１実施形態では、シールド板６が取り付けられた軌道輪が、外輪であったが、シール部材が取り付けられる軌道輪は、内輪であっても良い。また、第１実施形態では、シールド板６が取り付けられた軌道輪が、玉軸受の軌道輪であったが、この発明では、シール部材が取り付けられる軌道輪は、円筒ころ軸受や円錐ころ軸受の軌道輪等、玉軸受以外の転がり軸受の軌道輪であっても良い。   Moreover, in the said 1st Embodiment, although the bearing ring to which the shield board 6 was attached was an outer ring, the bearing ring to which a sealing member is attached may be an inner ring. In the first embodiment, the bearing ring to which the shield plate 6 is attached is a ball bearing, but in this invention, the bearing ring to which the seal member is attached is a cylindrical roller bearing or a tapered roller bearing. It may be a bearing ring of a rolling bearing other than a ball bearing such as a bearing ring.

図４は、本発明の第２実施形態の固定構造を形成するのに用いる、外輪５１、シールド板５６、および、カシメ治具８１を示す断面図である。図４に示すように、第２実施形態では、シール取付溝６２の軸方向の内方の内面部分が、略径方向に延在している点が、シール取付溝１２の軸方向の内方の内面部分が、径方向に角度をなして斜めに延在している第１実施形態と異なっている。また、図３Ａ、図３Ｂ、および、図４に示すように、第１実施形態と、第２実施形態とでは、シール取付溝の形状の違いに起因して、カシメに使用する治具の形状も異なっている。このように、軌道輪が如何なる形状のシール取付溝を有していても、使用するカシメ治具を適切に選択するだけで、本発明の構造を簡単安価に形成できる。   FIG. 4 is a cross-sectional view showing the outer ring 51, the shield plate 56, and the caulking jig 81 used to form the fixing structure of the second embodiment of the present invention. As shown in FIG. 4, in the second embodiment, the axially inner surface portion of the seal mounting groove 62 extends in the substantially radial direction. This is different from the first embodiment in which the inner surface portion extends obliquely at an angle in the radial direction. As shown in FIGS. 3A, 3B, and 4, the shape of the jig used for caulking is caused by the difference in the shape of the seal mounting groove between the first embodiment and the second embodiment. Is also different. As described above, the structure of the present invention can be formed easily and inexpensively by simply selecting a caulking jig to be used, regardless of the shape of the seal mounting groove on the race.

本発明の転がり軸受の軌道輪とシール部材との固定構造の第１実施形態を含む玉軸受の軸方向の半断面図である。It is a half sectional view of the axial direction of a ball bearing including a 1st embodiment of a fixed structure of a bearing ring and a seal member of a rolling bearing of the present invention. 図１における外輪のシール取付溝の周辺の部分拡大断面図である。FIG. 2 is a partially enlarged cross-sectional view around a seal mounting groove of an outer ring in FIG. 1. シールド板を、外輪のシール取付溝へ固定するときの手順を示す図である。It is a figure which shows the procedure when fixing a shield board to the seal attachment groove | channel of an outer ring | wheel. シールド板を、外輪のシール取付溝へ固定するときの手順を示す図である。It is a figure which shows the procedure when fixing a shield board to the seal attachment groove | channel of an outer ring | wheel. 本発明の第２実施形態の固定構造を形成するのに用いる、外輪、シールド板、および、カシメ治具を示す断面図である。It is sectional drawing which shows an outer ring | wheel, a shield board, and a crimping jig | tool used for forming the fixing structure of 2nd Embodiment of this invention.

符号の説明Explanation of symbols

１,５１ 外輪
６,５６ シールド板
１２,６２ シール取付溝
１４ 取付部
１５ シール部
１８ 内面
２０ 先端
２１ 屈曲部
２２ 環状部
３１,８１ カシメ治具 DESCRIPTION OF SYMBOLS 1,51 Outer ring 6,56 Shield plate 12,62 Seal attachment groove 14 Attachment part 15 Seal part 18 Inner surface 20 Tip 21 Bending part 22 Annular part 31,81 Caulking jig

Claims (1)

環状のシール取付溝を有する軌道輪と、
取付部と、シール部とを有するシール部材と
を備え、
上記取付部は、
屈曲部と、その屈曲部に基部が連なると共に、先端が上記屈曲部に実質的に当接する環状部とを有し、
上記軌道輪の軸方向の断面における上記軌道輪の中心軸よりも片側に位置する部分において、上記環状部は、上記シール取付溝の内面の２点に当接して支持されると共に、上記屈曲部は、上記シール取付溝の上記内面に当接して支持されて、上記シール部材は、計３点で上記シール取付溝に取り付けられていることを特徴とする転がり軸受の軌道輪とシール部材との固定構造。 A bearing ring having an annular seal mounting groove;
A mounting member and a seal member having a seal portion;
The mounting part is
A bent portion and a base portion that is continuous with the bent portion, and an annular portion whose tip is substantially in contact with the bent portion;
The annular portion is supported in contact with two points on the inner surface of the seal mounting groove in a portion located on one side of the center axis of the bearing ring in the axial cross section of the bearing ring, and the bent portion Is supported by being in contact with the inner surface of the seal mounting groove, and the seal member is mounted on the seal mounting groove in a total of three points. Fixed structure.
JP2006032576A 2006-02-09 2006-02-09 Fixing structure of bearing ring and seal member of rolling bearing Pending JP2007211893A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006032576A JP2007211893A (en) 2006-02-09 2006-02-09 Fixing structure of bearing ring and seal member of rolling bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006032576A JP2007211893A (en) 2006-02-09 2006-02-09 Fixing structure of bearing ring and seal member of rolling bearing

Publications (1)

Publication Number Publication Date
JP2007211893A true JP2007211893A (en) 2007-08-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012020957A1 (en) * 2012-10-25 2014-04-30 Volkswagen Aktiengesellschaft Bearing e.g. radial ball bearing, has annular cover force-fit and form-fit fixed in annular groove of outer bearing shell by pretensioning force such that effective direction of force points on annular, closed, linear contact surface
JP2017145895A (en) * 2016-02-18 2017-08-24 内山工業株式会社 Fitting member and bearing device provided with the same
US20190120288A1 (en) * 2016-04-12 2019-04-25 Nsk Ltd. Insulated bearing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012020957A1 (en) * 2012-10-25 2014-04-30 Volkswagen Aktiengesellschaft Bearing e.g. radial ball bearing, has annular cover force-fit and form-fit fixed in annular groove of outer bearing shell by pretensioning force such that effective direction of force points on annular, closed, linear contact surface
JP2017145895A (en) * 2016-02-18 2017-08-24 内山工業株式会社 Fitting member and bearing device provided with the same
US20190120288A1 (en) * 2016-04-12 2019-04-25 Nsk Ltd. Insulated bearing
US10605304B2 (en) * 2016-04-12 2020-03-31 Nsk Ltd. Insulated bearing

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