JPH0516411Y2 - - Google Patents

Info

Publication number
JPH0516411Y2
JPH0516411Y2 JP1985201808U JP20180885U JPH0516411Y2 JP H0516411 Y2 JPH0516411 Y2 JP H0516411Y2 JP 1985201808 U JP1985201808 U JP 1985201808U JP 20180885 U JP20180885 U JP 20180885U JP H0516411 Y2 JPH0516411 Y2 JP H0516411Y2
Authority
JP
Japan
Prior art keywords
outer ring
seal plate
peripheral
circumferential groove
circumferential
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP1985201808U
Other languages
Japanese (ja)
Other versions
JPS62107115U (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1985201808U priority Critical patent/JPH0516411Y2/ja
Publication of JPS62107115U publication Critical patent/JPS62107115U/ja
Application granted granted Critical
Publication of JPH0516411Y2 publication Critical patent/JPH0516411Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Description

【考案の詳細な説明】 〈産業上の利用分野〉 この考案は、密封形ころがり軸受に関する。[Detailed explanation of the idea] <Industrial application field> This invention relates to a sealed rolling bearing.

〈従来の技術〉 最近、密封形ころがり軸受における外輪の真円
度は高精度なものが強く要請されており、特に、
小型の密封形ころがり軸受の場合には、外輪の変
形量は１／1000mm以下の精度が要求されている。<Prior art> Recently, there has been a strong demand for high precision outer ring roundness in sealed rolling bearings.
In the case of small sealed rolling bearings, the amount of deformation of the outer ring is required to have an accuracy of 1/1000 mm or less.

ところが、従来の密封形ころがり軸受では、第
４図に示すように、軟鋼製のシールプレート１の
周縁屈曲部１ａに治具２を用いて外部圧力を加え
弾性変形させて外輪３の周溝４に装着している。
このため、シールプレート１の周縁屈曲部１ａか
ら外輪３に対して抗張力が生じる。この抗張力
は、外輪３の周溝４に形成した傾斜面６に対して
法線方向に働くため、外輪３の軌道部８および外
径部９に変形が起きる。このため、上記外輪３の
真円度を上述のように高精度に維持できないとい
う問題がある。 However, in conventional sealed rolling bearings, as shown in FIG. 4, external pressure is applied to the peripheral bent portion 1a of the seal plate 1 made of mild steel using a jig 2 to cause it to elastically deform, thereby forming the circumferential groove 4 of the outer ring 3. It is attached to.
Therefore, tensile force is generated from the peripheral bent portion 1a of the seal plate 1 to the outer ring 3. Since this tensile force acts in the normal direction to the inclined surface 6 formed in the circumferential groove 4 of the outer ring 3, deformation occurs in the raceway part 8 and the outer diameter part 9 of the outer ring 3. For this reason, there is a problem that the roundness of the outer ring 3 cannot be maintained with high precision as described above.

〈考案の目的〉 そこで、この考案の目的は、シールプレートの
周縁屈曲部を外輪の周溝に装着した場合、外輪の
軸線方向に作用させて、外径部および軌道部に変
形を生じないようにし、外輪の真円度を良好なも
のとすることにある。<Purpose of the invention> Therefore, the purpose of this invention is to prevent deformation of the outer diameter portion and raceway by acting in the axial direction of the outer ring when the peripheral bent portion of the seal plate is installed in the circumferential groove of the outer ring. The objective is to improve the roundness of the outer ring.

〈考案の構成〉 上記目的を達成するために、この考案の構成
は、外輪の周溝に金属製のシールプレートの周縁
屈曲部を装着してグリースを外輪と内輪とシール
プレートとで囲まれた転動体の存する領域に密封
する密封形ころがり軸受において、上記外輪の周
溝その周溝内周面が外側に向かつて湾曲するよう
に形成されて上記シールプレートを径方向外側に
間隙を有して収納する形状を有し、上記外輪の端
部には上記シールプレートの周縁屈曲部を上記外
輪の略軸方向内側に向けて押圧する周辺突起を形
成して、この周辺突起の内側に形成された押圧面
の方向を上記外輪の軸に垂直な方向に対して15度
から30度に成し、上記外輪の外周面には、上記周
溝の少なくとも中心位置より内側から始まる面取
り部を形成してなることを特徴としている。<Structure of the invention> In order to achieve the above object, the structure of this invention is such that a peripheral bent part of a metal seal plate is attached to the circumferential groove of the outer ring, and the grease is surrounded by the outer ring, the inner ring, and the seal plate. In a sealed rolling bearing that is sealed in a region where rolling elements are present, the outer ring has a circumferential groove and an inner circumferential surface of the circumferential groove is formed so as to curve outward, and the seal plate has a gap on the outside in the radial direction. A peripheral projection is formed at the end of the outer ring to press the peripheral bent portion of the seal plate toward the inner side in a substantially axial direction of the outer ring, and a peripheral projection is formed inside the peripheral projection. The direction of the pressing surface is oriented at 15 degrees to 30 degrees with respect to the direction perpendicular to the axis of the outer ring, and the outer peripheral surface of the outer ring is provided with a chamfered portion starting from at least the center position of the circumferential groove. It is characterized by becoming.

〈実施例〉 以下、この考案を図示の実施例により詳細に説
明する。<Example> This invention will be explained in detail below with reference to the illustrated example.

第２図において、２１は外輪、２２は軟鋼製の
幅の広いリング状のシールプレート、３１は内
輪、３２は外輪２１と内輪３１との間に互いに周
方向に所定間隔をあけて複数個配置した転動体の
一例であるボールである。 In FIG. 2, 21 is an outer ring, 22 is a wide ring-shaped seal plate made of mild steel, 31 is an inner ring, and 32 is a plurality of seal plates arranged at predetermined intervals in the circumferential direction between the outer ring 21 and the inner ring 31. A ball is an example of a rolling element.

第１，３図に示すように、上記外輪２１の両端
部２１ａ，２１ａには、外側に向かつて湾曲した
内周面２４とこれに連なる周辺突起２５の内面２
５ａで周溝２６を形成している。上記周辺突起２
５の内面２５ａは外輪２１の軸方向と直交する方
向に対してα（15度≦α≦30度）度傾いている。
というのは、αが15度未満であるときはシールプ
レート２２の径方向の固定ができない。また、α
が30度を超えるときは、プレート２２の周辺突起
２５を押す力の方向が径方向に向き、本考案の目
的を達成できないからである。上記周溝２６の外
径寸法はシールプレート２２の外径寸法よりも大
きくなつている。また上記外輪２１の外周面２１
ｂには周溝２６の中心線Ａよりも内側から始まる
アール状の面取り部２９を形成している。一方、
上記シールプレート２２はその外周部２２ａの先
端にカールした周縁屈曲部２２ｂを形成してい
る。また上記周溝２６の内方向の幅はシールプレ
ート２２の周縁屈曲部２２ｂの厚さ方向の幅より
も少し小さくしている。 As shown in FIGS. 1 and 3, at both ends 21a, 21a of the outer ring 21, an inner circumferential surface 24 curved toward the outside and an inner surface 2 of a peripheral protrusion 25 connected thereto.
5a forms a circumferential groove 26. Above peripheral protrusion 2
The inner surface 25a of the outer ring 21 is inclined by α (15 degrees≦α≦30 degrees) with respect to the direction perpendicular to the axial direction of the outer ring 21.
This is because when α is less than 15 degrees, the seal plate 22 cannot be fixed in the radial direction. Also, α
If the angle exceeds 30 degrees, the direction of the force pushing the peripheral protrusion 25 of the plate 22 will be radially directed, making it impossible to achieve the object of the present invention. The outer diameter of the circumferential groove 26 is larger than the outer diameter of the seal plate 22. Also, the outer peripheral surface 21 of the outer ring 21
A rounded chamfer 29 starting from the inside of the center line A of the circumferential groove 26 is formed in b. on the other hand,
The seal plate 22 has a curled peripheral bent portion 22b at the tip of its outer peripheral portion 22a. Further, the width of the circumferential groove 26 in the inward direction is slightly smaller than the width of the circumferential bent portion 22b of the seal plate 22 in the thickness direction.

そして、外輪２１の周溝２６に前面に略40度の
傾斜面３５ａを有する治具３５でシールプレート
２２の周縁屈曲部２２ｂを押圧して、シールプレ
ート２２を弾性変形させて外周部２２ａを外輪２
１の端部２１ｃに密着させ、周縁屈曲部２２ｂの
コーナ２２ｃを周辺突起２５の内面２５ａに密着
させて装着する。このように、上記外輪２１の周
溝２６には径方向外側に間隙４０が形成された状
態で、シールプレート２２の周縁屈曲部２２ｂは
周辺突起２５の傾斜面２５ａと外輪２１の端部２
１ｃとで軸方向にはさまれて固定されることにな
る。したがつて、シールプレート２２の周縁屈曲
部２２ｂは周辺突起２５を外方に曲げる曲げモー
メントを生じさせるが、外輪２１の外周面２１ｂ
には周溝２６の中心線Ａよりも内側から始まる略
アール状の面取り部２９を形成しているので、曲
げモーメントによる外輪端部２１ａに生じる歪み
は上記面取り部２９に吸収され、外周面２１ｂの
寸法がふくらむことはない。つまり、外輪２１の
外径の真円度は外輪２１の周溝２６にシールプレ
ート２２の周縁屈曲部２２ｂを装着する前と後と
で変化せず、良好な真円度が維持されるのであ
る。また、上記周縁屈曲部２２ｂからの矢印Ｘで
示す方向の力は略軸方向であるので外輪２１の内
径寸法に殆ど影響を及ぼさない。また、周縁屈曲
部２２ｂと内周面２４の間に間隙４０が存するこ
とからも外輪２１には径方向に力が作用せず、外
輪２１の端部２１ｃおよび軌道面３０が変化する
ことはない。 Then, the circumferential bent portion 22b of the seal plate 22 is pressed with a jig 35 having an approximately 40-degree inclined surface 35a on the front surface of the circumferential groove 26 of the outer ring 21, thereby elastically deforming the seal plate 22 and converting the outer circumferential portion 22a into the outer ring. 2
1, and the corner 22c of the peripheral bent portion 22b is brought into close contact with the inner surface 25a of the peripheral protrusion 25. In this way, with the gap 40 formed in the circumferential groove 26 of the outer ring 21 on the outside in the radial direction, the circumferential bent portion 22b of the seal plate 22 is connected to the inclined surface 25a of the peripheral protrusion 25 and the end 2 of the outer ring 21.
1c and are sandwiched and fixed in the axial direction. Therefore, the peripheral bent portion 22b of the seal plate 22 generates a bending moment that bends the peripheral protrusion 25 outward, but the outer peripheral surface 21b of the outer ring 21
Since a substantially rounded chamfered portion 29 starting from inside the center line A of the circumferential groove 26 is formed in the outer ring end portion 21a, the distortion occurring in the outer ring end portion 21a due to the bending moment is absorbed by the chamfered portion 29, and the outer circumferential surface 21b does not increase in size. In other words, the roundness of the outer diameter of the outer ring 21 does not change before and after the peripheral bent portion 22b of the seal plate 22 is attached to the circumferential groove 26 of the outer ring 21, and good roundness is maintained. . Further, since the force in the direction indicated by the arrow X from the peripheral bent portion 22b is substantially axial, it hardly affects the inner diameter dimension of the outer ring 21. Further, since the gap 40 exists between the peripheral bent portion 22b and the inner peripheral surface 24, no force is applied to the outer ring 21 in the radial direction, and the end 21c of the outer ring 21 and the raceway surface 30 do not change. .

上記実施例では、面取り部２９の形状を略アー
ル状にしたが、これは平面状であつてもよい。 In the above embodiment, the chamfered portion 29 has a substantially rounded shape, but it may also have a planar shape.

〈考案の効果〉 以上の説明から明らかなように、この考案の密
封形ころがり軸受は、外輪の周溝はその内周面が
外側に向かつて湾曲してシールプレートを径方向
外側に間隙を有して収納する形状を有し、かつ外
輪の端部にシールプレートの周縁屈曲部を外輪の
略軸方向内側に向けて押圧する周辺突起を形成し
て、その周辺突起の押圧面の方向を上記外輪の軸
に垂直な方向に対して15度から30度に成す一方、
外輪の外周面には、周溝の少なくとも中心位置よ
り内側から始まる面取り部を形成したものであ
る。<Effects of the invention> As is clear from the above explanation, in the sealed rolling bearing of this invention, the inner circumferential surface of the outer ring curves outward as the inner circumferential surface of the circumferential groove faces outward, leaving a gap in the radial direction of the seal plate. A peripheral protrusion is formed at the end of the outer ring to press the peripheral bent part of the seal plate inward in the approximately axial direction of the outer ring, and the direction of the pressing surface of the peripheral protrusion is set as above. While forming an angle of 15 degrees to 30 degrees with respect to the direction perpendicular to the axis of the outer ring,
A chamfered portion starting from at least the center position of the circumferential groove is formed on the outer circumferential surface of the outer ring.

したがつて、この考案によれば、外輪の周溝に
シールプレートの周縁屈曲部を弾性変形させて装
着するとシールプレートの径方向外側に間隙が生
じ、かつ周辺突起を略軸方向に押し、径方向の力
が作用しないで外輪の内径、外径の変化を防止で
きる。また、周辺突起を軸方向に押す力は、それ
を外方に曲げる曲げモーメントが生じるが、外輪
の外周面の面取り部に曲げモーメントによる変形
を生じさせ、外径寸法を大きくしないようにでき
て、結局、軌道部および外輪の変形を防止して外
輪の真円度を高精度に維持できる。 Therefore, according to this invention, when the peripheral bent portion of the seal plate is elastically deformed and installed in the peripheral groove of the outer ring, a gap is created on the radially outer side of the seal plate, and the peripheral protrusion is pushed approximately in the axial direction, causing the radial Changes in the inner and outer diameters of the outer ring can be prevented without applying any directional force. In addition, the force that pushes the peripheral protrusion in the axial direction generates a bending moment that bends it outward, but the bending moment causes deformation in the chamfered part of the outer circumferential surface of the outer ring, so that the outer diameter size can be prevented from increasing. As a result, deformation of the raceway and the outer ring can be prevented and the roundness of the outer ring can be maintained with high accuracy.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案の実施例を示す局部断面図、
第２図は上記実施例の全体断面図、第３図は上記
実施例の外輪の断面図、第４図は従来例を示す局
部断面図である。 ２１……外輪、２１ａ……端部、２１ｂ……外
周面、２２……シールプレート、２２ｂ……周縁
屈曲部、２５……周辺突起、２６……周溝、２９
……面取り部、３１……内輪、３２……転動体、
４０……間隙。 FIG. 1 is a local sectional view showing an embodiment of this invention.
FIG. 2 is an overall sectional view of the above embodiment, FIG. 3 is a sectional view of the outer ring of the above embodiment, and FIG. 4 is a partial sectional view of a conventional example. 21...Outer ring, 21a...End, 21b...Outer peripheral surface, 22...Seal plate, 22b...Peripheral bent portion, 25...Peripheral projection, 26...Peripheral groove, 29
... Chamfered portion, 31 ... Inner ring, 32 ... Rolling element,
40...Gap.

Claims (1)

【実用新案登録請求の範囲】 外輪の周溝に金属製のシールプレートの周縁屈
曲部を装着してグリースを外輪と内輪とシールプ
レートとで囲まれた転動体の存する領域に密封す
る密封形ころがり軸受において、 上記外輪の周溝は、その周溝の内周面が外側に
向かつて湾曲するように形成されて、上記シール
プレートを径方向外側に間〓を有して収納する形
状を有し、 上記外輪の端部には、上記シールプレートの周
縁屈曲部を上記外輪の略軸方向内側に向けて押圧
する周辺突起を形成して、この周辺突起の内側に
形成された押圧面の方向を上記外輪の軸に垂直な
方向に対して15度から30度に成し、 上記外輪の外周面には、上記周溝の少なくとも
中心位置より内側から始まる面取り部を形成して
成ることを特徴とする密封形ころがり軸受。[Claims for Utility Model Registration] A sealed type roller in which a peripheral bent portion of a metal seal plate is attached to a circumferential groove of an outer ring to seal grease into an area surrounded by the outer ring, inner ring, and seal plate where the rolling elements exist. In the bearing, the circumferential groove of the outer ring is formed such that an inner circumferential surface of the circumferential groove is curved outward, and has a shape that accommodates the seal plate with a gap radially outward. A peripheral protrusion is formed at the end of the outer ring to press the peripheral bent part of the seal plate inward in a substantially axial direction of the outer ring, and the direction of the pressing surface formed inside the peripheral protrusion is The chamfer is formed at an angle of 15 degrees to 30 degrees with respect to the direction perpendicular to the axis of the outer ring, and the outer circumferential surface of the outer ring is formed with a chamfered portion that starts from at least the center position of the circumferential groove. Sealed rolling bearing.
JP1985201808U 1985-12-25 1985-12-25 Expired - Lifetime JPH0516411Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1985201808U JPH0516411Y2 (en) 1985-12-25 1985-12-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1985201808U JPH0516411Y2 (en) 1985-12-25 1985-12-25

Publications (2)

Publication Number Publication Date
JPS62107115U JPS62107115U (en) 1987-07-08
JPH0516411Y2 true JPH0516411Y2 (en) 1993-04-30

Family

ID=31165605

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1985201808U Expired - Lifetime JPH0516411Y2 (en) 1985-12-25 1985-12-25

Country Status (1)

Country Link
JP (1) JPH0516411Y2 (en)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5693520U (en) * 1979-12-20 1981-07-25

Also Published As

Publication number Publication date
JPS62107115U (en) 1987-07-08

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