JPH0828579A - Thrust bearing with seal - Google Patents
Thrust bearing with sealInfo
- Publication number
- JPH0828579A JPH0828579A JP17076394A JP17076394A JPH0828579A JP H0828579 A JPH0828579 A JP H0828579A JP 17076394 A JP17076394 A JP 17076394A JP 17076394 A JP17076394 A JP 17076394A JP H0828579 A JPH0828579 A JP H0828579A
- Authority
- JP
- Japan
- Prior art keywords
- seal
- ring
- cylindrical portion
- raceway
- outer peripheral
- 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.)
- Pending
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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/30—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for axial load mainly
-
- 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
- F16C33/761—Sealings of ball or roller bearings specifically for bearings with purely axial load
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/30—Spring/Damper and/or actuator Units
- B60G2202/31—Spring/Damper and/or actuator Units with the spring arranged around the damper, e.g. MacPherson strut
- B60G2202/312—The spring being a wound spring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/10—Mounting of suspension elements
- B60G2204/12—Mounting of springs or dampers
- B60G2204/128—Damper mount on vehicle body or chassis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/418—Bearings, e.g. ball or roller bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明に係るシール付スラスト軸
受は、自動車の前輪を支持する懸架装置を構成する為の
ストラットに組み込んだ状態で使用する。BACKGROUND OF THE INVENTION The thrust bearing with a seal according to the present invention is used in a state in which it is incorporated in a strut for constituting a suspension system for supporting a front wheel of an automobile.
【０００２】[0002]
【従来の技術】操舵輪である自動車の前輪を支持する為
の懸架装置のうち、ストラット式の懸架装置の場合は、
オイルダンパを構成するダンパケースを、車体に対して
昇降自在に支持する。上記前輪は、このダンパケースの
下端部に固設された枢軸に回転自在に支持され、上記オ
イルダンパは車体に対して回転自在に支持される。従っ
て、上記オイルダンパを構成するロッドの上端部と車体
との間には、このロッドをスラスト荷重を支承しつつ回
転自在に支持する為の、スラスト軸受が必要になる。2. Description of the Related Art Among suspension devices for supporting front wheels of an automobile, which are steering wheels, a strut type suspension device is
A damper case, which constitutes an oil damper, is supported so that it can be raised and lowered with respect to the vehicle body. The front wheel is rotatably supported by a pivot shaft fixed to the lower end of the damper case, and the oil damper is rotatably supported by the vehicle body. Therefore, a thrust bearing is required between the upper end of the rod forming the oil damper and the vehicle body to rotatably support the rod while supporting the thrust load.
【０００３】実際のストラットの場合には、上記ロッド
の上端部に上部ばねシートを、上記ダンパケースの中間
部に下部ばねシートを、それぞれ固定している。そし
て、上記上部ばねシートの下面と上記下部ばねシートの
上面との間に圧縮ばねを設けて、上記オイルダンパに下
方に向く弾力を付与している。即ち、車輪と車体との間
には上記圧縮ばねを設け、この圧縮ばねによって、車体
の重量を支えている。上記スラスト軸受は、上記上部ば
ねシートの上面と、車体側に設けた取付板部の下面との
間に設けられる。即ち、上記スラスト軸受を上記ロッド
の上端部周囲に設け、このスラスト軸受によって、上部
ばねシートと取付板部との間に作用するスラスト荷重を
支承している。上記スラスト軸受は取付板部の下面に直
接突き当てる他、アッパーサポートと呼ばれるスペーサ
を介して突き当てる場合もある。In the case of an actual strut, the upper spring seat is fixed to the upper end portion of the rod, and the lower spring seat is fixed to the middle portion of the damper case. A compression spring is provided between the lower surface of the upper spring seat and the upper surface of the lower spring seat to impart downward elasticity to the oil damper. That is, the compression spring is provided between the wheel and the vehicle body, and the compression spring supports the weight of the vehicle body. The thrust bearing is provided between the upper surface of the upper spring seat and the lower surface of the mounting plate portion provided on the vehicle body side. That is, the thrust bearing is provided around the upper end portion of the rod, and the thrust bearing supports the thrust load acting between the upper spring seat and the mounting plate portion. In addition to directly abutting the lower surface of the mounting plate portion, the thrust bearing may abut via a spacer called an upper support.
【０００４】この様な部分に使用し、上記ロッドに加わ
るスラスト荷重を支承しつつこのロッドの回転を許容す
ると共に、内側に雨水や泥水等（以下、単に『雨水等』
とする。）が進入する事を防止するスラスト軸受として
従来から、実公昭６２−２４８１９号公報、米国特許第
４４６６７５１号明細書、実公昭６４−２９７５号公報
に記載された構造のシール付スラスト軸受が知られてい
る。図４に示したシール付スラスト軸受は、このうちの
実公昭６２−２４８１９号公報及び米国特許第４４６６
７５１号明細書に記載されたスラスト軸受を示してい
る。尚、上記上部ばねシートと取付板部との間に作用す
る荷重は殆どスラスト荷重であるが、ラジアル荷重も僅
かとは言え作用する。この為従来一般的には、これら上
部ばねシートと取付板部との間に、スラスト軸受に加え
てラジアル軸受も組み込んでいる。これに対して、図４
に示した構造の場合には、スラスト荷重を主に支承する
他、比較的小さなラジアル荷重も支承自在としている。The rod is used in such a portion to allow the rotation of the rod while supporting the thrust load applied to the rod, and rainwater and muddy water (hereinafter simply referred to as "rainwater") inside.
And ) Has been known as a thrust bearing with a structure described in Japanese Utility Model Publication No. 62-24819, U.S. Pat. No. 4,466,751 and Japanese Utility Model Publication No. 64-2975. ing. The thrust bearing with seal shown in FIG. 4 is disclosed in Japanese Utility Model Publication No. 62-24819 and U.S. Pat. No. 4,466.
7 shows a thrust bearing described in Japanese Patent No. 751. The load acting between the upper spring seat and the mounting plate portion is almost a thrust load, but the radial load also works although it is slight. Therefore, conventionally, in addition to the thrust bearing, a radial bearing is generally incorporated between the upper spring seat and the mounting plate portion. On the other hand, FIG.
In the case of the structure shown in (1), in addition to mainly supporting the thrust load, a relatively small radial load can also be supported.
【０００５】図４は、シール付スラスト軸受を、懸架装
置を構成する相手部材である上部ばねシート１の上面に
載置した状態で示している。このシール付スラスト軸受
は、それぞれが軸受鋼等の硬質金属により円輪状に造ら
れた、第一の軌道輪である内輪２と第二の軌道輪である
外輪３との間に、複数の転動体４を転動自在に保持する
事により構成されている。このうちの内輪２は、下面に
第一の軌道である内輪軌道５を、内周縁部（図４の左縁
部）に上方に突出する内側円筒部６を、それぞれ有す
る。又、この内輪２の外周縁部（図４の右縁部）には、
下方に折れ曲がった第一の円筒部７を形成している。FIG. 4 shows the thrust bearing with a seal mounted on the upper surface of the upper spring seat 1 which is a counterpart member constituting the suspension device. This thrust bearing with seal has a plurality of rolling elements between an inner ring 2 which is a first bearing ring and an outer ring 3 which is a second bearing ring, each of which is made of a hard metal such as bearing steel in a circular ring shape. It is configured by holding the moving body 4 rotatably. Of these, the inner ring 2 has an inner ring raceway 5 which is a first raceway on the lower surface, and an inner cylindrical portion 6 which projects upward at an inner peripheral edge portion (left edge portion in FIG. 4). Further, in the outer peripheral edge portion (the right edge portion in FIG. 4) of the inner ring 2,
A first cylindrical portion 7 that is bent downward is formed.
【０００６】一方、上記外輪３は、上面に第二の軌道で
ある外輪軌道８を有する。又、この外輪３の外周縁部
（図４の右縁部）には、上方に折れ曲がった第二の円筒
部９を形成している。スラスト軸受の組立時にこの第二
の円筒部９は、上記第一の円筒部７の外側（図４の右
側）に位置する。この第二の円筒部９の内径寸法は第一
の円筒部７の外径寸法よりも大きい為、スラスト軸受を
組み立てた状態で第二の円筒部９の内周面（図４の左
面）と上記第一の円筒部７の外周面（図４の右面）との
間には、微小な隙間が介在する。従って、上記内輪２と
外輪３との相対回転は自在である。On the other hand, the outer ring 3 has an outer ring raceway 8 which is a second raceway on the upper surface. Further, a second cylindrical portion 9 which is bent upward is formed on the outer peripheral edge portion (right edge portion in FIG. 4) of the outer ring 3. At the time of assembling the thrust bearing, the second cylindrical portion 9 is located outside the first cylindrical portion 7 (on the right side in FIG. 4). Since the inner diameter of the second cylindrical portion 9 is larger than the outer diameter of the first cylindrical portion 7, the inner peripheral surface (left surface in FIG. 4) of the second cylindrical portion 9 is assembled in the assembled thrust bearing. A minute gap is interposed between the outer peripheral surface (the right surface in FIG. 4) of the first cylindrical portion 7. Therefore, the relative rotation between the inner ring 2 and the outer ring 3 is free.
【０００７】又、上記第二の円筒部９には、芯金１０と
シール材１１とから成り全体が円環状である、シールリ
ング１２を外嵌している。このうちのシール材１１の先
端縁（図４の上端縁）は、自由状態で上記内輪２の上面
よりも上方に突出している。そして、懸架装置を組み立
てた状態でこの先端縁は、前記アッパーサポート等、前
記取付板部側に設けられ、上記内輪２の上面に当接する
部材の下面に弾性的に押し付けられる。そしてこの下面
と摺接し、上記シールリング１２の内側に雨水等が進入
する事を防止する。前記複数の転動体４は、保持器１３
により保持された状態で、上記外輪軌道８と内輪軌道５
との間に転動自在に設けられている。尚、支承すべきス
ラスト荷重が小さい場合、転動体４として図示のころに
代えて、玉を使用する場合もある。Further, a seal ring 12, which is composed of a core metal 10 and a sealing material 11 and has a ring shape as a whole, is fitted on the second cylindrical portion 9. Of these, the tip end edge (upper edge in FIG. 4) of the sealing material 11 projects above the upper surface of the inner ring 2 in a free state. Then, in the assembled state of the suspension device, this tip edge is elastically pressed against the lower surface of a member that is provided on the side of the mounting plate such as the upper support and that abuts the upper surface of the inner ring 2. Then, it makes sliding contact with this lower surface and prevents rainwater and the like from entering the inside of the seal ring 12. The plurality of rolling elements 4 includes a retainer 13
The outer ring raceway 8 and the inner ring raceway 5 while being held by
It is provided so that it can roll between and. When the thrust load to be supported is small, balls may be used as the rolling elements 4 instead of the illustrated rollers.
【０００８】更に、前記内側円筒部６には、ポリアミド
樹脂（ナイロン）、ジュラコン、ポリ四弗化エチレン
（ＰＴＦＥ）等の、滑り易い合成樹脂により円筒状に造
られたスリーブ１４を外嵌固定している。軸受装置を懸
架装置に組み付けるべく、前記外輪３の下面を前記上部
ばねシート１の上面に当接させた状態で、このスリーブ
１４の内周面（図４の左面）は、前記上部ばねシート１
の内周縁に形成された固定側円筒部１５の外周面（図４
の右面）に、ラジアル微小隙間１６を介して対向する。Furthermore, a cylindrical sleeve 14 made of a slippery synthetic resin such as polyamide resin (nylon), Duracon, polytetrafluoroethylene (PTFE) or the like is externally fitted and fixed to the inner cylindrical portion 6. ing. In order to assemble the bearing device to the suspension device, with the lower surface of the outer ring 3 abutting the upper surface of the upper spring seat 1, the inner peripheral surface (left surface in FIG. 4) of the sleeve 14 has the upper spring seat 1
The outer peripheral surface of the fixed-side cylindrical portion 15 formed on the inner peripheral edge of the
To the right side) via the radial minute gap 16.
【０００９】この様な構造の軸受装置の場合、車両重量
に応じて加わるスラスト荷重は、複数の転動体４により
支承する。又、旋回時に生じる遠心力に伴う応力等、ス
トラットの軸に対し直角方向に加わる力によるラジアル
荷重は、上記スリーブ１４の内周面と固定側円筒部１５
の外周面とを摺接させる事で、上記上部ばねシート１に
支承させる。In the case of the bearing device having such a structure, the thrust load applied according to the weight of the vehicle is supported by the plurality of rolling elements 4. Further, the radial load due to the force applied in the direction perpendicular to the axis of the strut, such as the stress caused by the centrifugal force generated at the time of turning, is fixed to the inner peripheral surface of the sleeve 14 and the fixed side cylindrical portion 15.
The upper spring seat 1 is supported by sliding contact with the outer peripheral surface of the.
【００１０】一方、前記実公昭６４−２９７５号公報に
は、図５に示す様な構造のシール付スラスト軸受が記載
されている。この図５に示した構造の場合には、第二の
円筒部９の外周面に、弾性材のみで構成されたシールリ
ング１２ａを係止している。このシールリング１２ａは
第一、第二のシールリップ１７、１８を有する。そし
て、これら各シールリップ１７、１８の先端縁が、それ
ぞれの自由状態で、内輪２の上面よりも上方（第一のシ
ールリップ１７の先端縁の場合）、或は外輪３の下面よ
りも下方（第二のシールリップ１８の先端縁の場合）に
突出している。従ってこの図５に示した構造の場合には
上記シールリング１２ａが、内輪２の上面とこの上面に
当接する部材の下面との間だけでなく、外輪３の下面と
この下面が当接する部材の上面との間もシールする。On the other hand, Japanese Utility Model Publication No. 64-2975 discloses a thrust bearing with a seal having a structure as shown in FIG. In the case of the structure shown in FIG. 5, a seal ring 12a made of only an elastic material is locked to the outer peripheral surface of the second cylindrical portion 9. The seal ring 12a has first and second seal lips 17 and 18. The tip edges of these seal lips 17, 18 are above the upper surface of the inner ring 2 (in the case of the tip edge of the first seal lip 17) or below the lower surface of the outer ring 3 in their respective free states. (In the case of the tip edge of the second seal lip 18) it projects. Therefore, in the case of the structure shown in FIG. 5, the seal ring 12a is provided not only between the upper surface of the inner ring 2 and the lower surface of the member that abuts on the upper surface, but also on the lower surface of the outer ring 3 and the member that abuts on the lower surface. Also seal between the upper surface.
【００１１】[0011]
【発明が解決しようとする課題】上述の様に構成される
従来のシール付スラスト軸受の場合、次に述べる様な点
を改良する事が望まれている。先ず、図４に示した従来
構造の第１例の場合、シールリング１２を構成するシー
ル材１１のシールリップが上方にのみ突出し、下方には
突出していない。この為、例えば上部ばねシート１の上
面と外輪３の下面との間に雨水等が入り込む可能性を否
定できない。一般的にはこれら両面同士は広い面積で当
接し、しかも面圧も相当に高い為、これら両面同士の間
に入り込んだ雨水等がスラスト軸受の内部にまで入り込
む可能性は低い。しかしながら、近年に於ける高圧洗車
機の普及等により、上記上部ばねシート１の上面と外輪
３の下面との間への雨水等の進入防止に就いても、十分
な考慮をする事が望まれている。SUMMARY OF THE INVENTION In the case of the conventional thrust bearing with a seal constructed as described above, it is desired to improve the following points. First, in the case of the first example of the conventional structure shown in FIG. 4, the seal lip of the seal material 11 forming the seal ring 12 projects only upward, and does not project downward. Therefore, for example, the possibility that rainwater may enter between the upper surface of the upper spring seat 1 and the lower surface of the outer ring 3 cannot be denied. Generally, these two surfaces are in contact with each other over a wide area, and the surface pressure is considerably high. Therefore, it is unlikely that rainwater or the like that has entered between these two surfaces will enter the inside of the thrust bearing. However, due to the widespread use of high-pressure car wash machines in recent years, sufficient consideration should be given to preventing the entry of rainwater or the like between the upper surface of the upper spring seat 1 and the lower surface of the outer ring 3. ing.
【００１２】図５に示した従来構造の第２例の場合、内
輪２の上面と相手部材の下面との間への雨水等の進入防
止だけでなく、上記上部ばねシート１（図４）の上面と
外輪３の下面との間への雨水等の進入防止も図れる為、
上述の様な問題は生じない。ところが、芯金を省略して
弾性材のみで構成したシールリング１２ａと第二の円筒
部９との結合強度を十分に確保する事が難しく、輸送途
中や組み付け作業中にシールリング１２ａが脱落する可
能性がある。シールリング１２ａの内周面と第二の円筒
部９の外周面とを接着すれば、この様な問題はなくなる
が、第二の円筒部９の外周面の脱脂、接着剤塗布等、面
倒な作業が必要になり、シール付スラスト軸受の製作費
を高くする原因となる為、好ましくない。In the case of the second example of the conventional structure shown in FIG. 5, not only is rainwater prevented from entering between the upper surface of the inner ring 2 and the lower surface of the mating member, but also the upper spring seat 1 (FIG. 4). Since it is possible to prevent rainwater from entering between the upper surface and the lower surface of the outer ring 3,
The above problems do not occur. However, it is difficult to secure sufficient bonding strength between the seal ring 12a, which is made of only elastic material, and the core metal is omitted, and the seal ring 12a falls off during transportation or during assembly work. there is a possibility. If the inner peripheral surface of the seal ring 12a and the outer peripheral surface of the second cylindrical portion 9 are adhered to each other, such a problem will be eliminated, but degreasing of the outer peripheral surface of the second cylindrical portion 9, application of an adhesive, and the like will be troublesome. This is not preferable because it requires work and causes an increase in manufacturing cost of the thrust bearing with seal.
【００１３】この様な問題に対応すべく、図４に示した
構造と図５に示した構造とを図６に示す様に組み合わ
せ、芯金１０の外周面に第一、第二のシールリップ１７
ａ、１８ａを有するシール材１１ａを添着したシールリ
ング１２ｂを使用する事が考えられる。ところが、単に
図４、図５の構造を組み合わせただけの場合、上記シー
ルリング１２ｂの脱落防止を必ずしも十分に行えない。
即ち、芯金１０を有するシールリング１２ｂと外輪３と
の分離防止を確実に行わせる為には、上記芯金１０の第
三の円筒部１９を第二の円筒部９に外嵌するだけでは不
十分である。この第三の円筒部１９の端部（図６の下端
部）を直径方向内方に絞る事により、上記第二の円筒部
９の基端部に存在する湾曲部２０にかしめ付けたかしめ
部２１を形成する必要がある。そして、このかしめ部２
１と、上記第三の円筒部１９の一端縁に形成した内向フ
ランジ状の折れ曲がり部２２との間で上記第二の円筒部
９を軸方向両側から挟持すれば、上記シールリング１２
ｂと外輪３との分離防止を確実にできる。In order to address such a problem, the structure shown in FIG. 4 and the structure shown in FIG. 5 are combined as shown in FIG. 6, and the first and second seal lips are provided on the outer peripheral surface of the cored bar 10. 17
It is conceivable to use the seal ring 12b to which the seal material 11a having a and 18a is attached. However, if the structures shown in FIGS. 4 and 5 are simply combined, it is not always possible to sufficiently prevent the seal ring 12b from falling off.
That is, in order to surely prevent the seal ring 12b having the core metal 10 and the outer ring 3 from being separated from each other, simply fitting the third cylindrical portion 19 of the core metal 10 onto the second cylindrical portion 9 is performed. Is insufficient. By squeezing the end portion (the lower end portion in FIG. 6) of the third cylindrical portion 19 inward in the diametrical direction, the crimped portion is crimped to the curved portion 20 existing at the base end portion of the second cylindrical portion 9. 21 need to be formed. And this caulking part 2
1 and the inward flange-shaped bent portion 22 formed at the one end edge of the third cylindrical portion 19, the second cylindrical portion 9 is sandwiched from both sides in the axial direction.
The separation between b and the outer ring 3 can be reliably prevented.
【００１４】ところが、単に図４、図５に示した構造を
組み合わせただけの、図６に示した構造の場合には、上
記かしめ部２１を形成する為の治具２３と上記シール材
１１ａの一部（第二のシールリップ１８ａ部分）とが干
渉し、上記かしめ部２１を形成する事ができない。本発
明のシール付スラスト軸受は、この様な事情に鑑みて発
明したものである。However, in the case of the structure shown in FIG. 6 in which the structures shown in FIGS. 4 and 5 are simply combined, the jig 23 for forming the caulked portion 21 and the sealing material 11a are formed. The part (the second seal lip 18a part) interferes with each other and the caulking portion 21 cannot be formed. The thrust bearing with seal of the present invention was invented in view of such circumstances.
【００１５】[0015]
【課題を解決するための手段】本発明のシール付スラス
ト軸受は、前述した従来のシール付スラスト軸受と同様
に、片面に第一の軌道を、外周縁部にこの片面側に突出
する第一の円筒部を、それぞれ有する円輪状の第一の軌
道輪と、上記第一の軌道と対向する片面に第二の軌道
を、外周縁部に上記第一の円筒部の外径寸法よりも大き
な内径寸法を有する第二の円筒部を、それぞれ有する第
二の軌道輪と、上記第一の軌道と第二の軌道との間に転
動自在に設けられた複数の転動体と、全体を円環状に形
成されて上記第二の円筒部の外周面に装着されたシール
リングとを備えている。The thrust bearing with a seal of the present invention is, like the conventional thrust bearing with a seal as described above, a first raceway on one surface and a first track projecting to the outer peripheral edge portion on the one surface side. A circular ring-shaped first bearing ring, each of which has a cylindrical portion, a second raceway on one surface facing the first raceway, and an outer peripheral edge portion having a larger outer diameter than the first cylindrical portion. Second races each having a second cylindrical portion having an inner diameter dimension, and a plurality of rolling elements rotatably provided between the first raceway and the second raceway, as a whole And a seal ring formed in an annular shape and attached to the outer peripheral surface of the second cylindrical portion.
【００１６】特に、本発明のシール付スラスト軸受に於
いては、上記シールリングは芯金と弾性材製のシール材
とから成る。このうちの芯金は、上記第二の円筒部に外
嵌された第三の円筒部と、この第三の円筒部の一端縁か
ら直径方向内方に折れ曲がってその内側面を上記第二の
円筒部の先端縁に当接させた内向フランジ状の折れ曲が
り部と、上記第三の円筒部の他端寄り部分を直径方向内
方に絞る事で上記第二の円筒部の基端部に存在する湾曲
部にかしめ付けたかしめ部とを備える。又、上記シール
材は、基部と、この基部の外周面から二又に分岐した第
一、第二のシールリップとを備える。このうちの基部の
内周縁は、上記第三の円筒部の外周面一端寄り部分に結
合されており、上記第一のシールリップの先端縁は自由
状態に於いて、上記第一の軌道輪の他面よりも上記第一
の軌道面と反対側に突出し、上記第二のシールリップの
先端縁は自由状態に於いて、上記第二の軌道輪の他面よ
りも上記第二の軌道面と反対側に突出する。Particularly, in the thrust bearing with seal of the present invention, the seal ring is composed of a core metal and a seal material made of an elastic material. Of these, the core metal is a third cylindrical portion externally fitted to the second cylindrical portion, and is bent inward in the diametrical direction from one end edge of the third cylindrical portion, and the inner side surface thereof is the second cylindrical portion. Existence at the base end of the second cylindrical part by squeezing the inward flange-shaped bent part that is in contact with the tip edge of the cylindrical part and the part near the other end of the third cylindrical part inward in the diameter direction. And a caulking portion which is caulked to the curved portion. Further, the sealing material includes a base and first and second seal lips that are bifurcated from the outer peripheral surface of the base. The inner peripheral edge of the base portion is joined to a portion of the outer peripheral surface of the third cylindrical portion near one end, and the tip edge of the first seal lip is in a free state, Projecting to the opposite side of the first raceway surface from the other surface, and the tip edge of the second seal lip in the free state, the second raceway surface and the second raceway surface from the other surface of the second race ring. Project to the other side.
【００１７】[0017]
【作用】上述の様に構成される本発明のシール付スラス
ト軸受が、スラスト荷重を支承する際の作用自体は、前
述した従来の軸受装置と同様である。特に、本発明の軸
受装置の場合には、第一のシールリップにより第一の軌
道輪の他面と相手面との間への雨水等の進入防止を、第
二のシールリップにより第二の軌道輪の他面と相手面と
の間への雨水等の進入防止を、それぞれ図る。又、シー
ル材の芯金を構成する第三の円筒部の一端縁に形成した
折れ曲がり部とこの第三の円筒部の他端寄り部分に形成
したかしめ部とにより、第二の軌道輪に形成した第二の
円筒部を軸方向両側から挟持する為、これら第二、第三
の円筒部同士が軸方向にずれる事がなくなる。従って、
第二の円筒部を設けた第二の軌道輪と、第三の円筒部を
設けた芯材を含んで構成されるシールリングとの分離防
止を確実に図れる。上記かしめ部を形成する際、上記第
三の円筒部の他端寄り部分の周囲にはかしめ用の治具を
進入させるが、上記シール材の基部の内周縁は、上記第
三の円筒部の外周面一端寄り部分に結合されている為、
この治具とシール材とが干渉する事はない。The action of the thrust bearing with seal of the present invention configured as described above when bearing the thrust load is the same as that of the conventional bearing device described above. In particular, in the case of the bearing device of the present invention, the first seal lip prevents the entry of rainwater and the like between the other surface of the first bearing ring and the mating surface, and the second seal lip prevents Prevent rainwater from entering between the other surface of the bearing ring and the other surface. Also, the second bearing ring is formed by a bent portion formed at one end edge of the third cylindrical portion forming the core metal of the seal material and a caulking portion formed near the other end of the third cylindrical portion. Since the second cylindrical portion is sandwiched from both sides in the axial direction, the second and third cylindrical portions do not shift in the axial direction. Therefore,
It is possible to reliably prevent separation between the second bearing ring having the second cylindrical portion and the seal ring including the core member having the third cylindrical portion. When forming the caulking portion, a caulking jig is inserted around the other end portion of the third cylindrical portion, and the inner peripheral edge of the base portion of the sealing material is the third cylindrical portion of the third cylindrical portion. Since it is connected to the outer peripheral surface near one end,
This jig does not interfere with the sealing material.
【００１８】[0018]
【実施例】図１〜３は本発明の実施例を示している。
尚、本発明の特徴は、シールリング１２ｃの形状を工夫
する事で、転動体４設置部分に雨水等を進入しにくく
し、同時に、このシールリング１２ｃと外輪３との分離
防止を確実にする点にある。その他の部分の構成及び作
用は、前述の図４に示した従来構造と同様である。よっ
て、従来構造と同等部分には同一符号を付して重複する
説明を省略若しくは簡略にし、以下、本発明の特徴部分
を中心に説明する。1 to 3 show an embodiment of the present invention.
A feature of the present invention is that by devising the shape of the seal ring 12c, rainwater or the like is less likely to enter the portion where the rolling elements 4 are installed, and at the same time, separation prevention between the seal ring 12c and the outer ring 3 is ensured. In point. The configuration and operation of the other parts are similar to those of the conventional structure shown in FIG. Therefore, the same parts as those of the conventional structure are designated by the same reference numerals to omit or simplify the overlapping description, and the characteristic part of the present invention will be mainly described below.
【００１９】第二の軌道輪である外輪３の外周縁部に形
成した第二の円筒部９の外周面には、シールリング１２
ｃを装着している。このシールリング１２ｃは、鋼板
等、塑性変形自在な金属板製の芯金１０と、ゴム、エラ
ストマー等の弾性材製のシール材１１ｂとから成る。The seal ring 12 is provided on the outer peripheral surface of the second cylindrical portion 9 formed on the outer peripheral edge portion of the outer ring 3 which is the second bearing ring.
I am wearing c. The seal ring 12c includes a metal core 10 made of a metal plate such as a steel plate that is plastically deformable, and a seal material 11b made of an elastic material such as rubber or elastomer.
【００２０】このうちの芯金１０は、上記第二の円筒部
９に外嵌された第三の円筒部１９を有する。この第三の
円筒部１９の一端縁（図１〜３の上端縁）部分には、こ
の一端縁から直径方向内方（図１〜３の左方）に折れ曲
がった、内向フランジ状の折れ曲がり部２２を形成して
いる。そして、この折れ曲がり部２２の内側面（図１〜
３の下面）を、上記第二の円筒部９の先端縁（図１〜３
の上端縁）に当接させている。更に、上記第三の円筒部
１９の他端（図１〜３の下端）寄り部分には、この他端
寄り部分を直径方向内方に絞る事で、先細テーパ状のか
しめ部２４を形成している。そして、このかしめ部２４
により、上記外輪３の外周縁に形成した第二の円筒部９
の基端部外周面側に存在する湾曲部２０をかしめ付けて
いる。The core metal 10 has a third cylindrical portion 19 fitted on the second cylindrical portion 9. The one end edge (upper edge in FIGS. 1 to 3) of the third cylindrical portion 19 is bent inward in the diameter direction (left side in FIGS. 1 to 3) from this one edge, and is a bent portion having an inward flange shape. 22 is formed. Then, the inner surface of the bent portion 22 (see FIGS.
3) to the tip edge of the second cylindrical portion 9 (see FIGS. 1 to 3).
The upper edge of the). Further, a tapered tapered caulking portion 24 is formed on a portion of the third cylindrical portion 19 near the other end (lower end in FIGS. 1 to 3) by squeezing the portion near the other end radially inward. ing. And this caulking part 24
The second cylindrical portion 9 formed on the outer peripheral edge of the outer ring 3 by
The curved portion 20 existing on the outer peripheral surface side of the proximal end portion of is crimped.
【００２１】又、上記シール材１１ｂは、基部２５と、
この基部２５の外周面から二又に分岐した第一、第二の
シールリップ１７ｂ、１８ｂとを備える。このうちの基
部２５の内周縁は、上記第三の円筒部１９の外周面一端
寄り部分に結合されている。尚、この様にシール材１１
ｂの基部２５内周面と芯金１０の第三の円筒部１９外周
面とを結合するのは、シール材１１ｂを形成するのと同
時に行える焼き付け、インサート等、従来から周知の方
法により行う。尚、上記基部２５を設ける部分として好
ましくは、上記第三の円筒部１９の幅方向（図１〜３の
上下方向）中央よりも上側部分とする。この理由は、上
記かしめ部２４の形成時に、後述する治具２３ａと基部
２５とが干渉する事を確実に防止する為である。The sealing material 11b has a base portion 25,
The base 25 is provided with first and second seal lips 17b and 18b which are bifurcated from the outer peripheral surface. The inner peripheral edge of the base portion 25 is joined to a portion of the third cylindrical portion 19 closer to one end of the outer peripheral surface. In addition, the sealing material 11
The inner peripheral surface of the base portion 25 of b and the outer peripheral surface of the third cylindrical portion 19 of the cored bar 10 are joined by a well-known method such as baking and insert which can be performed at the same time when the sealing material 11b is formed. The portion where the base portion 25 is provided is preferably a portion above the center of the third cylindrical portion 19 in the width direction (vertical direction in FIGS. 1 to 3). The reason for this is to reliably prevent the jig 23a and the base 25, which will be described later, from interfering with each other when the caulked portion 24 is formed.
【００２２】上記第一、第二のシールリップ１７ｂ、１
８ｂのうち、第一のシールリップ１７ｂは、上記基部２
５の上端縁から直径方向外方（図１〜３の右方）に向
け、斜め上方に突出している。そして、この第一のシー
ルリップ１７ｂの先端縁は、自由状態に於いて、（第一
の軌道輪の他面である）内輪２の上面よりも（第一の軌
道面と反対側である）上側に突出している。又、上記第
二のシールリップ１８ｂは、上記基部２５の下部外周面
から直径方向外方に向け、斜め下方に突出している。そ
して、この第二のシールリップ１８ｂの先端縁は、自由
状態に於いて、（第二の軌道輪の他面である）外輪３の
下面よりも（第二の軌道面と反対側である）下側に突出
している。尚、上記第三の円筒部１９の外周面から上記
第二のシールリップ１８ｂの基端部までの距離Ｌ（図
３）は好ましくは、上記芯金１０の厚さ寸法Ｔの２倍以
上（Ｌ≧２Ｔ）確保する。この理由は、上記かしめ部２
４の形成時に使用する、後述する治具２３ａの剛性を十
分にすべく、この治具２３ａの板厚を確保した場合で
も、この治具２３ａと上記第二のシールリップ１８ｂ及
び基部２５とが干渉する事を確実に防止する為である。The first and second seal lips 17b, 1
8b, the first seal lip 17b is the base 2
From the upper edge of 5, the diametrically outward direction (to the right in FIGS. 1 to 3) is projected obliquely upward. The tip edge of the first seal lip 17b is, in the free state, more than the upper surface of the inner ring 2 (which is the other surface of the first bearing ring) (the side opposite to the first bearing surface). It protrudes to the upper side. The second seal lip 18b projects obliquely downward from the outer peripheral surface of the lower portion of the base 25 in the diametrical direction. The tip edge of the second seal lip 18b is, in the free state, lower than the lower surface of the outer ring 3 (which is the other surface of the second bearing ring) (which is the side opposite to the second bearing surface). It projects down. The distance L (FIG. 3) from the outer peripheral surface of the third cylindrical portion 19 to the base end portion of the second seal lip 18b is preferably twice the thickness dimension T of the core metal 10 or more ( L ≧ 2T). The reason for this is that the caulking portion 2
Even when the plate thickness of the jig 23a is secured so that the jig 23a, which will be described later, used in forming 4, is sufficiently rigid, the jig 23a, the second seal lip 18b, and the base 25 are This is to reliably prevent interference.
【００２３】上述の様に構成される本発明のシール付ス
ラスト軸受は、上部ばねシート１（図４）の上面と車体
側に設けた取付板部の下面との間等、互いに対向する平
行な２面２６ａ、２６ｂ同士の間で挟持する。そして、
これら２面２６ａ、２６ｂ間に加わるスラスト荷重を支
承しつつ、これら各面２６ａ、２６ｂを設けた部材同士
の相対回転を許容する。尚、図２では第一、第二のシー
ルリップ１７ｂ、１８ｂの断面形状を、自由状態のまま
描いているが、実際にシール付スラスト軸受を上記２面
２６ａ、２６ｂ間で挟持した状態では、上記各シールリ
ップ１７ｂ、１８ｂは弾性変形し、それぞれの先端縁を
上記各面２６ａ、２６ｂに当接させる。The thrust bearing with a seal of the present invention configured as described above is parallel to and facing each other, such as between the upper surface of the upper spring seat 1 (FIG. 4) and the lower surface of the mounting plate portion provided on the vehicle body side. It is sandwiched between the two surfaces 26a and 26b. And
While supporting the thrust load applied between these two surfaces 26a and 26b, relative rotation of the members provided with these surfaces 26a and 26b is allowed. Although the sectional shapes of the first and second seal lips 17b and 18b are drawn in a free state in FIG. 2, in the state where the thrust bearing with seal is actually sandwiched between the two surfaces 26a and 26b, The seal lips 17b and 18b are elastically deformed, and the respective tip edges are brought into contact with the surfaces 26a and 26b.
【００２４】前述の様に構成され、上述の様に２面２６
ａ、２６ｂ間で挟持する状態に組み付けられる本発明の
シール付スラスト軸受が、スラスト荷重を支承する際の
作用自体は、前述した従来のシール付スラスト軸受と同
様である。特に、本発明のシール付スラスト軸受の場合
には、第一のシールリップ１７ｂにより内輪２の上面と
車体側に設けた取付板部の下面等の面２６ｂとの間への
雨水等の進入防止を、第二のシールリップ１８ｂにより
外輪３の下面と上部ばねシートの上面等の面２６ｂとの
間への雨水等の進入防止を、それぞれ図る。従って、シ
ール付スラスト軸受内部への雨水等の進入防止を確実に
図れる。It is constructed as described above and has two sides 26 as described above.
The action itself when the thrust bearing with seal of the present invention assembled to be sandwiched between a and 26b bears the thrust load is the same as that of the conventional thrust bearing with seal described above. In particular, in the case of the thrust bearing with a seal of the present invention, the first seal lip 17b prevents rainwater and the like from entering between the upper surface of the inner ring 2 and the surface 26b such as the lower surface of the mounting plate portion provided on the vehicle body side. The second seal lip 18b prevents rainwater and the like from entering between the lower surface of the outer ring 3 and the surface 26b such as the upper surface of the upper spring seat. Therefore, it is possible to surely prevent rainwater and the like from entering the inside of the thrust bearing with seal.
【００２５】又、本発明のシール付スラスト軸受の場合
には、シールリング１２ｃと外輪３との分離防止が確実
に図られる。即ち、このシールリング１２ｃの芯金１０
を構成する第三の円筒部１９の上端縁に形成した折れ曲
がり部２２と、この第三の円筒部１９の下端寄り部分に
形成したかしめ部２４とが、上記外輪３の外周縁部に形
成した第二の円筒部９を軸方向両側から挟持する。この
為、これら第二、第三の円筒部９、１９同士が軸方向に
ずれる事がなくなる。従って、第二の円筒部９を設けた
外輪３と、第三の円筒部１９を設けた芯金１０を含んで
構成されるシールリング１２ｃとの分離防止を確実に図
れる。Further, in the case of the thrust bearing with a seal of the present invention, the separation between the seal ring 12c and the outer ring 3 can be reliably prevented. That is, the core metal 10 of the seal ring 12c
The bent portion 22 formed on the upper end edge of the third cylindrical portion 19 and the crimped portion 24 formed on the lower end portion of the third cylindrical portion 19 are formed on the outer peripheral edge portion of the outer ring 3. The second cylindrical portion 9 is sandwiched from both sides in the axial direction. Therefore, the second and third cylindrical portions 9 and 19 are prevented from being displaced from each other in the axial direction. Therefore, it is possible to surely prevent the outer ring 3 provided with the second cylindrical portion 9 and the seal ring 12c including the core metal 10 provided with the third cylindrical portion 19 from being separated.
【００２６】この様に、外輪３とシールリング１２ｃと
の分離防止を確実に図る為の折れ曲がり部２２とかしめ
部２４とのうち、折れ曲がり部２２は芯金１０の製造初
期段階（シール材１１ｂの結合以前）から形成してお
く。一方、上記かしめ部２４は、上記第三の円筒部１９
を上記第二の円筒部９に外嵌した後に形成する。この様
に、第二、第三の円筒部９、１９同士を嵌合した後、上
記かしめ部２４を形成する際には、図３に示す様に、上
記第三の円筒部１９の下端寄り部分の周囲にかしめ用の
治具２３ａを進入させる。上記第三の円筒部１９の外周
面と結合したシール材１１ｂの基部２５の内周縁は、上
記第三の円筒部１９の外周面上端寄り部分に結合されて
いる為、上記第三の円筒部１９の下半部外周面と前記第
二のシールリップ１８ｂの内周面との間には、上記治具
２３ａを受け入れられるだけの空間２７が、全周に亙っ
て存在する。従って、上記かしめ部２４の形成作業時
に、上記治具２３ａとシール材１１ｂとが干渉する事は
ない。尚、内側円筒部６とスリーブ１４とが、本発明の
実施に必須でない事は明らかである。As described above, of the bent portion 22 and the crimped portion 24 for surely preventing the outer ring 3 and the seal ring 12c from being separated from each other, the bent portion 22 is in the initial stage of manufacturing the core metal 10 (the sealing material 11b is made of the sealing material 11b). Before joining). On the other hand, the caulked portion 24 is the third cylindrical portion 19
Is formed after being externally fitted to the second cylindrical portion 9. As described above, when the caulked portion 24 is formed after the second and third cylindrical portions 9 and 19 are fitted to each other, as shown in FIG. A caulking jig 23a is inserted around the portion. The inner peripheral edge of the base portion 25 of the sealing material 11b that is joined to the outer peripheral surface of the third cylindrical portion 19 is joined to the outer peripheral surface upper end portion of the third cylindrical portion 19, so the third cylindrical portion is formed. Between the outer peripheral surface of the lower half portion of 19 and the inner peripheral surface of the second seal lip 18b, there is a space 27 for accommodating the jig 23a over the entire circumference. Therefore, the jig 23a and the sealing material 11b do not interfere with each other when the caulking portion 24 is formed. Obviously, the inner cylindrical portion 6 and the sleeve 14 are not essential for carrying out the present invention.
【００２７】[0027]
【発明の効果】本発明のシール付スラスト軸受は、以上
に述べた通り構成され作用するので、転動体設置部分に
雨水等の異物が進入する事を確実に防止できる。この結
果、軸受装置の性能確保、耐久性、信頼性の向上を図れ
る。しかも、シールリングと第二の軌道輪との分離防止
を確実に図れる為、シール付スラスト軸受の運搬や組み
付け作業中にシールリングが脱落する事による、不良品
の発生等を確実に防止できる。Since the thrust bearing with seal of the present invention is constructed and operates as described above, it is possible to reliably prevent foreign matter such as rainwater from entering the rolling element installation portion. As a result, it is possible to ensure the performance of the bearing device, improve its durability, and improve its reliability. In addition, since the separation between the seal ring and the second bearing ring can be reliably prevented, it is possible to reliably prevent the occurrence of defective products due to the seal ring falling off during the transportation and assembly work of the thrust bearing with seal.
【図１】本発明の実施例を示す部分断面図。FIG. 1 is a partial sectional view showing an embodiment of the present invention.
【図２】対向する２面間に挟持した状態を示す部分断面
図。FIG. 2 is a partial cross-sectional view showing a state of being sandwiched between two opposite surfaces.
【図３】芯金にかしめ部を形成する状態を示す部分断面
図。FIG. 3 is a partial cross-sectional view showing a state in which a caulked portion is formed on a cored bar.
【図４】従来構造の第１例を示す半部断面図。FIG. 4 is a half sectional view showing a first example of a conventional structure.
【図５】同第２例を示す部分断面図。FIG. 5 is a partial cross-sectional view showing the second example.
【図６】従来構造の第１例と第２例とを単純に組み合わ
せる事により得られる構造を示す部分断面図。FIG. 6 is a partial cross-sectional view showing a structure obtained by simply combining the first example and the second example of the conventional structure.
１ 上部ばねシート ２ 内輪 ３ 外輪 ４ 転動体 ５ 内輪軌道 ６ 内側円筒部 ７ 第一の円筒部 ８ 外輪軌道 ９ 第二の円筒部 １０ 芯金 １１、１１ａ、１１ｂ シール材 １２、１２ａ、１２ｂ、１２ｃ シールリング １３ 保持器 １４ スリーブ １５ 固定側円筒部 １６ ラジアル微小隙間 １７、１７ａ、１７ｂ 第一のシールリップ １８、１８ａ、１８ｂ 第二のシールリップ １９ 第三の円筒部 ２０ 湾曲部 ２１ かしめ部 ２２ 折れ曲がり部 ２３、２３ａ 治具 ２４ かしめ部 ２５ 基部 ２６ａ、２６ｂ 面 ２７ 空間 1 Upper Spring Seat 2 Inner Ring 3 Outer Ring 4 Rolling Element 5 Inner Ring Orbit 6 Inner Cylindrical Part 7 First Cylindrical Part 8 Outer Ring Orbit 9 Second Cylindrical Part 10 Core Bars 11, 11a, 11b Sealing Material 12, 12a, 12b, 12c Seal ring 13 Retainer 14 Sleeve 15 Fixed side cylindrical portion 16 Radial minute gap 17, 17a, 17b First seal lip 18, 18a, 18b Second seal lip 19 Third cylindrical portion 20 Curved portion 21 Caulking portion 22 Bent Part 23, 23a Jig 24 Caulking part 25 Base part 26a, 26b Surface 27 Space
Claims (1)
面側に突出する第一の円筒部を、それぞれ有する円輪状
の第一の軌道輪と、上記第一の軌道と対向する片面に第
二の軌道を、外周縁部に上記第一の円筒部の外径寸法よ
りも大きな内径寸法を有する第二の円筒部を、それぞれ
有する第二の軌道輪と、上記第一の軌道と第二の軌道と
の間に転動自在に設けられた複数の転動体と、全体を円
環状に形成されて上記第二の円筒部の外周面に装着され
たシールリングとを備えたシール付スラスト軸受に於い
て、上記シールリングは芯金と弾性材製のシール材とか
ら成り、このうちの芯金は、上記第二の円筒部に外嵌さ
れた第三の円筒部と、この第三の円筒部の一端縁から直
径方向内方に折れ曲がってその内側面を上記第二の円筒
部の先端縁に当接させた内向フランジ状の折れ曲がり部
と、上記第三の円筒部の他端寄り部分を直径方向内方に
絞る事で上記第二の円筒部の基端部に存在する湾曲部に
かしめ付けたかしめ部とを備え、上記シール材は、基部
と、この基部の外周面から二又に分岐した第一、第二の
シールリップとを備え、このうちの基部の内周縁は、上
記第三の円筒部の外周面一端寄り部分に結合されてお
り、上記第一のシールリップの先端縁は自由状態に於い
て、上記第一の軌道輪の他面よりも上記第一の軌道面と
反対側に突出し、上記第二のシールリップの先端縁は自
由状態に於いて、上記第二の軌道輪の他面よりも上記第
二の軌道面と反対側に突出する事を特徴とするシール付
スラスト軸受。1. A ring-shaped first race having a first track on one side and a first cylindrical portion projecting to the one side on the outer peripheral edge, and the first track is opposed to the first track. A second raceway having a second raceway on one side and a second cylinder portion having an inner diameter dimension larger than the outer diameter dimension of the first cylinder portion on the outer peripheral edge portion, and the first raceway. And a second raceway, and a plurality of rolling elements rotatably provided between the second raceway, and a seal including a seal ring which is formed in an annular shape as a whole and is attached to the outer peripheral surface of the second cylindrical portion. In the attached thrust bearing, the seal ring is composed of a core metal and a sealing material made of an elastic material, and the core metal of the seal ring and the third cylinder part fitted onto the second cylinder part, Bend inward in the diametrical direction from one end edge of the third cylindrical portion, and contact its inner side surface with the tip edge of the second cylindrical portion. The inward flange-shaped bent portion and the other end portion of the third cylindrical portion are squeezed inward in the diametrical direction to crimp the curved portion existing at the base end portion of the second cylindrical portion. The seal member includes a base portion and first and second seal lips bifurcated from the outer peripheral surface of the base portion, and the inner peripheral edge of the base portion has the third cylinder. Is joined to a portion near one end of the outer peripheral surface of the portion, and the tip edge of the first seal lip is, in a free state, on a side opposite to the first raceway surface with respect to the other surface of the first race ring. A thrust bearing with a seal, characterized in that the tip end edge of the second seal lip projects toward the opposite side of the second raceway surface from the other surface of the second raceway ring in the free state. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17076394A JPH0828579A (en) | 1994-07-22 | 1994-07-22 | Thrust bearing with seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17076394A JPH0828579A (en) | 1994-07-22 | 1994-07-22 | Thrust bearing with seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0828579A true JPH0828579A (en) | 1996-02-02 |
Family
ID=15910931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17076394A Pending JPH0828579A (en) | 1994-07-22 | 1994-07-22 | Thrust bearing with seal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0828579A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7215372B2 (en) | 2002-05-17 | 2007-05-08 | Olympus Corporation | Optical apparatus having dust off function |
| DE102006031943A1 (en) * | 2006-07-11 | 2008-01-17 | Schaeffler Kg | thrust roller bearing |
-
1994
- 1994-07-22 JP JP17076394A patent/JPH0828579A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7215372B2 (en) | 2002-05-17 | 2007-05-08 | Olympus Corporation | Optical apparatus having dust off function |
| DE102006031943A1 (en) * | 2006-07-11 | 2008-01-17 | Schaeffler Kg | thrust roller bearing |
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