JPH08303473A - Tapered roller bearing with seal and attaching structure for it - Google Patents
Tapered roller bearing with seal and attaching structure for itInfo
- Publication number
- JPH08303473A JPH08303473A JP7067024A JP6702495A JPH08303473A JP H08303473 A JPH08303473 A JP H08303473A JP 7067024 A JP7067024 A JP 7067024A JP 6702495 A JP6702495 A JP 6702495A JP H08303473 A JPH08303473 A JP H08303473A
- Authority
- JP
- Japan
- Prior art keywords
- inner ring
- seal
- width
- tapered roller
- roller bearing
- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7803—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings
- F16C33/7813—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members suited for particular types of rolling bearings for tapered roller bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/7886—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted outside the gap between the inner and outer races, e.g. sealing rings mounted to an end face or outer surface of a race
-
- 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
- F16C33/7889—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to an inner race and extending toward the outer race
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
- F16C19/364—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
-
- 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
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
- F16C19/546—Systems with spaced apart rolling bearings including at least one angular contact bearing
- F16C19/547—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling bearings
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、自動車のステアリン
グ部に使用される比較的小径の円すいころ軸受や、その
他の一般産業機械に使用されるシール付円すいころ軸受
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tapered roller bearing having a relatively small diameter used in a steering section of an automobile, and a tapered roller bearing having a seal used in other general industrial machines.
【０００２】[0002]
【従来の技術】従来、シール付円すいころ軸受は、一般
的に図３や図４のようなシール形状となっている。図３
のものは、シール５１の芯金５２に設けた内向き屈曲部
５２ａを内輪５３の鍔部外径面に圧入させて取付けてい
る。図４のものは、芯金５２に設けたＵ字状断面の屈曲
部５２ｂを内輪５３の鍔部外径面に圧入させると共に、
芯金５２に幅面係合片５２ｃを設けている。幅面係合片
５２ｃは、内輪間座５４と干渉しない程度の小片として
ある。2. Description of the Related Art Conventionally, tapered roller bearings with a seal generally have a seal shape as shown in FIGS. FIG.
In the above, the inwardly bent portion 52a provided on the core metal 52 of the seal 51 is press-fitted and attached to the outer diameter surface of the flange portion of the inner ring 53. In the structure shown in FIG. 4, the bent portion 52b having a U-shaped cross section provided on the cored bar 52 is press-fitted into the outer diameter surface of the collar portion of the inner ring 53, and
A width face engaging piece 52c is provided on the cored bar 52. The width-side engaging piece 52c is a small piece that does not interfere with the inner ring spacer 54.
【０００３】[0003]
【発明が解決しようとする課題】しかし、小径の円すい
ころ軸受の場合、シール５１を嵌合させる鍔面の幅寸法
Ａが小さいため、嵌合力が小さくなり、使用中の振動等
でシール５１が外れる可能性が考えられる。この発明の
目的は、シール外れの防止を図ったシール付円すいころ
軸受およびその取付構造を提供することである。However, in the case of a tapered roller bearing having a small diameter, since the width dimension A of the brim surface on which the seal 51 is fitted is small, the fitting force becomes small, and the seal 51 will be damaged by vibration during use. There is a possibility that it will come off. An object of the present invention is to provide a tapered roller bearing with a seal and a mounting structure for the seal, which prevent the seal from coming off.
【０００４】[0004]
【課題を解決するための手段】この発明は、両鍔付きの
内輪を有し、外輪の幅面にリップ部が接触する芯金付き
のシールを内輪の大径端に設けたシール付円すいころ軸
受に適用される。この構成において、前記芯金に、内輪
の大径端鍔の外径面に嵌合するＵ字状断面の屈曲部と、
この屈曲部から内径側に延びて内輪鍔の幅面を内径端の
近傍まで覆う幅押え部とを設ける。SUMMARY OF THE INVENTION The present invention has a sealed tapered roller bearing having an inner ring with both flanges, and a seal with a core metal whose lip portion contacts the width surface of the outer ring provided at the large diameter end of the inner ring. Applied to. In this configuration, a bent portion having a U-shaped cross section, which is fitted to the outer diameter surface of the large diameter end collar of the inner ring, in the core metal,
A width holding portion is provided which extends from the bent portion toward the inner diameter side and covers the width surface of the inner ring collar up to the vicinity of the inner diameter end.
【０００５】[0005]
【作用】この構成によると、シールは屈曲部の嵌合で内
輪に取付けられるが、これに加えて次のように堅固に固
定される。すなわち、シールの芯金の幅押え部が内輪幅
面の内径端の近傍まで突出しているため、軸受の予圧等
で内輪間座や軸の段部等と内輪の間に作用する幅押え力
によって、前記幅押え部が内輪の幅面に押し当てられ、
シール外れが防止される。円すいころ軸受であるため、
軸受の予圧等に伴い、このような内輪大径端側の幅面で
幅押え力が生じ易い。特に、内輪間座と内輪とでシール
を挟み込むことで、内輪幅押え力の利用によるシール外
れの防止効果が得易い。According to this construction, the seal is attached to the inner ring by fitting the bent portion, but in addition to this, it is firmly fixed as follows. That is, since the width pressing portion of the core metal of the seal projects to the vicinity of the inner diameter end of the inner ring width surface, the width pressing force acting between the inner ring spacer or the stepped portion of the shaft and the inner ring due to bearing preload, etc. The width holding portion is pressed against the width surface of the inner ring,
The seal is prevented from coming off. Since it is a tapered roller bearing,
With the preload of the bearing and the like, a width holding force is likely to be generated on the width surface on the large diameter end side of the inner ring. In particular, by sandwiching the seal between the inner ring spacer and the inner ring, it is easy to obtain the effect of preventing the seal from coming off due to the use of the inner ring width pressing force.
【０００６】[0006]
【実施例】この発明の一実施例を図１および図２に基づ
いて説明する。この軸受は、両鍔付の内輪１と鍔無しの
外輪２の間に、保持器３に保持された円すいころ４を介
在させ、内輪１の大径端にシール５を設けた形式のもの
である。内輪１の大径端は、ほぼ鍔１ａの幅寸法だけ外
輪２よりも幅方向に突出している。シール５は、薄板状
の芯金６の外径部にゴム等の弾性体からなるリップ部７
を設けたものであり、リップ部７の先端が外輪２の幅面
に接触する。芯金６はプレス成形したリング板状のもの
であり、径方向の中間部に、内側へ凹んだＵ字状断面の
屈曲部６ａが設けられ、この屈曲部６ａで内輪１の大径
端鍔１ａの外径面に圧入状態に嵌着される。芯金６の屈
曲部６ａよりも内径側に延びる部分は、内輪１の幅面を
内径端の近傍まで覆う幅押え部６ｂとされている。この
軸受は、軸９に内輪１が圧入により取付けられ、内輪鍔
８と内輪１の間に、シール５の芯金６における前記幅押
え部６ｂが挟み込むまれる。なお、９ａは、軸９に取付
けた部品を示し、このような軸取付部品９ａ、あるいは
軸９の段面等と軸受内輪１との間でシール５の芯金６を
挟み込んでも良い。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. This bearing is of a type in which a tapered roller 4 held by a cage 3 is interposed between an inner ring 1 with both collars and an outer ring 2 without a collar, and a seal 5 is provided at the large diameter end of the inner ring 1. is there. The large diameter end of the inner ring 1 projects in the width direction more than the outer ring 2 by the width dimension of the collar 1a. The seal 5 has a lip portion 7 made of an elastic material such as rubber on the outer diameter portion of a thin plate-shaped core metal 6.
Is provided, and the tip of the lip portion 7 contacts the width surface of the outer ring 2. The cored bar 6 is a press-molded ring plate-shaped member, and a bent portion 6a having a U-shaped cross section that is recessed inward is provided at an intermediate portion in the radial direction, and the bent portion 6a has a large-diameter end flange of the inner ring 1. The outer peripheral surface of 1a is press-fitted. A portion of the core metal 6 that extends toward the inner diameter side from the bent portion 6a is a width holding portion 6b that covers the width surface of the inner ring 1 to the vicinity of the inner diameter end. In this bearing, the inner ring 1 is attached to the shaft 9 by press fitting, and the width holding portion 6b of the core metal 6 of the seal 5 is sandwiched between the inner ring collar 8 and the inner ring 1. Reference numeral 9a denotes a component attached to the shaft 9, and the core metal 6 of the seal 5 may be sandwiched between the shaft attachment component 9a or the step surface of the shaft 9 and the bearing inner ring 1.
【０００７】この構成によると、シール５の芯金６が内
輪幅面の内径端の近傍まで突出しているため、軸受の予
圧等で内輪間座８と内輪１の間に作用する幅押え力によ
り、芯金６の幅押え部６ｂが内輪１の幅面に押し当てら
れ、シール５が堅固に固定される。そのため、振動等で
シール５が外れる恐れがない。小径の軸受の場合、シー
ル５の屈曲部６ｂにおける嵌合力が不足しがちとなる
が、このような小径軸受の場合に、前記の内輪幅押え力
によるシール５の固定が効果的となる。According to this structure, since the core metal 6 of the seal 5 projects to the vicinity of the inner diameter end of the inner ring width surface, the width pressing force acting between the inner ring spacer 8 and the inner ring 1 due to preload of the bearing, The width pressing portion 6b of the cored bar 6 is pressed against the width surface of the inner ring 1, and the seal 5 is firmly fixed. Therefore, there is no fear that the seal 5 will come off due to vibration or the like. In the case of a small-diameter bearing, the fitting force at the bent portion 6b of the seal 5 tends to be insufficient, but in the case of such a small-diameter bearing, the fixing of the seal 5 by the inner ring width pressing force is effective.
【０００８】図２はこのシール付円すいころ軸受を使用
したステアリング装置の概略断面を示す。クロスシャフ
ト１１の両端に小径部１１ｂを設けて円すいころ軸受１
０の内輪１を嵌合させ、各円すいころ軸受１０の外輪２
をハウジング１２のシャフト支持孔の内径面に嵌合させ
て、両側のナット１３，１４により適度の予圧を軸受１
０に加えている。両軸受１０，１０は、大径端を互いに
対向させてある。これら円すいころ軸受１０，１０は、
図１の実施例のものであり、図２の左側の軸受１０は、
クロスシャフト１１の段面１１ｂと軸受内輪１との間に
図１の内輪間座８を介在させ、内輪間座８と軸受内輪１
とでシール５の芯金６を挟み込んである。図の右側の軸
受１０は、軸受内輪１の幅面に被せたシール５の芯金６
を直接にクロスシャフト１１の段面１１ｂに当接させて
ある。クロスシャフト１１は、軸端１１ｃにピットマン
アーム（図示せず）が取付けられるものであり、ハンド
ル（図示せず）によって回転させられるボールねじ１５
により、そのボールナット１５ａおよびラックピニオン
機構１６を介して回転させられる。このような使用例の
場合等に、前記の予圧に伴う内輪幅押え力によるシール
外れの防止作用が効果的に得られる。FIG. 2 shows a schematic cross section of a steering apparatus using this tapered roller bearing with a seal. Tapered roller bearing 1 having small diameter portions 11b provided at both ends of the cross shaft 11
No. 0 inner ring 1 is fitted, and each tapered roller bearing 10 has an outer ring 2
Is fitted to the inner diameter surface of the shaft support hole of the housing 12, and an appropriate preload is applied to the bearing 1 by the nuts 13 and 14 on both sides.
0 is added. The large diameter ends of both bearings 10, 10 are opposed to each other. These tapered roller bearings 10, 10 are
The bearing 10 on the left side of FIG.
The inner ring spacer 8 of FIG. 1 is interposed between the step surface 11 b of the cross shaft 11 and the bearing inner ring 1 to form the inner ring spacer 8 and the bearing inner ring 1.
The core metal 6 of the seal 5 is sandwiched between and. The bearing 10 on the right side of the drawing is a core metal 6 of the seal 5 which covers the width surface of the bearing inner ring 1.
Is directly brought into contact with the step surface 11b of the cross shaft 11. A pitman arm (not shown) is attached to the shaft end 11c of the cross shaft 11, and a ball screw 15 is rotated by a handle (not shown).
Thus, the ball nut 15a and the rack and pinion mechanism 16 are rotated. In the case of such a usage example, the effect of preventing the seal coming off due to the inner ring width pressing force due to the preload can be effectively obtained.
【０００９】[0009]
【発明の効果】この発明のシール付円すいころ軸受は、
シールの芯金に、内輪の大径端鍔の外径面に嵌合するＵ
字状断面の屈曲部と、内輪鍔の幅面を内径端の近傍まで
覆う幅押え部とを設けたため、内輪幅押え力を利用して
シールが内輪に固定され、振動等でシールが外れる恐れ
がない。シールと内輪との嵌合力が不足する小径の軸受
で特にこの効果が発揮される。また、内輪間座と内輪と
でシールを挟み込むことで、前記の内輪幅押え力の利用
によるシール外れの防止効果が得易い。The tapered roller bearing with seal of the present invention is
The core metal of the seal is fitted to the outer diameter surface of the large diameter end collar of the inner ring.
Since the bent part with a V-shaped cross section and the width holding part that covers the width surface of the inner ring flange to the vicinity of the inner diameter end are provided, the seal is fixed to the inner ring by using the inner ring width holding force, and there is a possibility that the seal will come off due to vibration etc. Absent. This effect is particularly exerted on a bearing having a small diameter in which the fitting force between the seal and the inner ring is insufficient. Further, by sandwiching the seal between the inner ring spacer and the inner ring, it is easy to obtain the effect of preventing the seal from coming off due to the use of the inner ring width pressing force.
【図１】この発明の一実施例にかかるシール付円すいこ
ろ軸受の部分断面図である。FIG. 1 is a partial sectional view of a tapered roller bearing with a seal according to an embodiment of the present invention.
【図２】同軸受を使用したステアリング装置の概略断面
図である。FIG. 2 is a schematic sectional view of a steering device using the bearing.
【図３】従来例の断面図である。FIG. 3 is a sectional view of a conventional example.
【図４】他の従来例の断面図である。FIG. 4 is a sectional view of another conventional example.
１…内輪、２…外輪、３…保持器、４…ころ、５…シー
ル、６…芯金、６ａ…屈曲部、６ｂ…幅押え部、７…リ
ップ部、８…内輪間座DESCRIPTION OF SYMBOLS 1 ... Inner ring, 2 ... Outer ring, 3 ... Retainer, 4 ... Roller, 5 ... Seal, 6 ... Core metal, 6a ... Bending part, 6b ... Width holding part, 7 ... Lip part, 8 ... Inner ring spacer
【手続補正書】[Procedure amendment]
【提出日】平成７年４月６日[Submission date] April 6, 1995
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】全文[Correction target item name] Full text
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【書類名】 明細書[Document name] Statement
【発明の名称】 シール付き円すいころ軸受およびそ
の取付構造[Title of the Invention] seal with a circle tapered roller bearing and its mounting structure
【特許請求の範囲】[Claims]
【発明の詳細な説明】Detailed Description of the Invention
【０００１】[0001]
【産業上の利用分野】この発明は、自動車のステアリン
グ部に使用される比較的小径の円すいころ軸受や、その
他の一般産業機械に使用されるシール付き円すいころ軸
受に関する。FIELD OF THE INVENTION This invention relates to a relatively small diameter and of tapered roller bearings, on the other of the seal with a circle tapered roller bearings that are used in general industrial machinery is used in the steering of the car.
【０００２】[0002]
【従来の技術】従来、シール付き円すいころ軸受は、一
般的に図３や図４のようなシール形状となっている。図
３のものは、シール５１の芯金５２に設けた内向き屈曲
部５２ａを内輪５３の鍔部外径面に圧入させて取付けて
いる。図４のものは、芯金５２に設けたＵ字状断面の屈
曲部５２ｂを内輪５３の鍔部外径面に圧入させると共
に、芯金５２に幅面係合片５２ｃを設けている。幅面係
合片５２ｃは、内輪間座５４と干渉しない程度の小片と
してある。Conventionally, seals circle tapered roller bearing has a generally sealed shape as shown in FIG. 3 and FIG. 4. In the case of FIG. 3, the inwardly bent portion 52a provided on the core metal 52 of the seal 51 is press-fitted and attached to the outer diameter surface of the flange portion of the inner ring 53. In the structure shown in FIG. 4, a bent portion 52b having a U-shaped cross section provided on the cored bar 52 is press-fitted into the outer diameter surface of the collar portion of the inner ring 53, and the cored bar 52 is provided with a width surface engaging piece 52c. The width-side engaging piece 52c is a small piece that does not interfere with the inner ring spacer 54.
【０００３】[0003]
【発明が解決しようとする課題】しかし、小径の円すい
ころ軸受の場合、シール５１を嵌合させる鍔面の幅寸法
Ａが小さいため、嵌合力が小さくなり、使用中の振動等
でシール５１が外れる可能性が考えられる。この発明の
目的は、シール外れの防止を図ったシール付き円すいこ
ろ軸受およびその取付構造を提供することである。However, in the case of a tapered roller bearing having a small diameter, since the width dimension A of the brim surface on which the seal 51 is fitted is small, the fitting force becomes small, and the seal 51 will be damaged by vibration during use. There is a possibility that it will come off. The purpose of the present invention is to provide a seal with circular tapered roller bearings and their mounting structure which aimed at preventing the seal off.
【０００４】[0004]
【課題を解決するための手段】この発明は、両鍔付きの
内輪を有し、外輪の幅面にリップ部が接触する芯金付き
のシールを内輪の大径端に設けたシール付き円すいころ
軸受に適用される。この構成において、前記芯金に、内
輪の大径端鍔の外径面に嵌合するＵ字状断面の屈曲部
と、この屈曲部から内径側に延びて内輪鍔の幅面を内径
端の近傍まで覆う幅押え部とを設ける。SUMMARY OF THE INVENTION This invention has the inner ring with two flange, roller pancreatic seals circle having a metal core with a seal lip portion in the width surface of the outer ring contacts the inner ring of the large-diameter end Applied to bearings. In this structure, a bent portion having a U-shaped cross section that fits on the outer diameter surface of the large-diameter end collar of the inner ring, and a width surface of the inner ring collar that extends from the bent portion toward the inner diameter side and is close to the inner diameter end. A width holding part that covers up to is provided.
【０００５】[0005]
【作用】この構成によると、シールは屈曲部の嵌合で内
輪に取付けられるが、これに加えて次のように堅固に固
定される。すなわち、シールの芯金の幅押え部が内輪幅
面の内径端の近傍まで突出しているため、軸受の予圧等
で内輪間座や軸の段部等と内輪の間に作用する幅押え力
によって、前記幅押え部が内輪の幅面に押し当てられ、
シール外れが防止される。円すいころ軸受であるため、
軸受の予圧等に伴い、このような内輪大径端側の幅面で
幅押え力が生じ易い。特に、内輪間座と内輪とでシール
を挟み込むことで、内輪幅押え力の利用によるシール外
れの防止効果が得易い。According to this construction, the seal is attached to the inner ring by fitting the bent portion, but in addition to this, it is firmly fixed as follows. That is, since the width pressing portion of the core metal of the seal projects to the vicinity of the inner diameter end of the inner ring width surface, the width pressing force acting between the inner ring spacer or the stepped portion of the shaft and the inner ring due to bearing preload, etc. The width holding portion is pressed against the width surface of the inner ring,
The seal is prevented from coming off. Since it is a tapered roller bearing,
With the preload of the bearing and the like, a width holding force is likely to be generated on the width surface on the large diameter end side of the inner ring. In particular, by sandwiching the seal between the inner ring spacer and the inner ring, it is easy to obtain the effect of preventing the seal from coming off due to the use of the inner ring width pressing force.
【０００６】[0006]
【実施例】この発明の一実施例を図１および図２に基づ
いて説明する。この軸受は、両鍔付の内輪１と鍔無しの
外輪２の間に、保持器３に保持された円すいころ４を介
在させ、内輪１の大径端にシール５を設けた形式のもの
である。内輪１の大径端は、ほぼ鍔１ａの幅寸法だけ外
輪２よりも幅方向に突出している。シール５は、薄板状
の芯金６の外径部にゴム等の弾性体からなるリップ部７
を設けたものであり、リップ部７の先端が外輪２の幅面
に接触する。芯金６はプレス成形したリング板状のもの
であり、径方向の中間部に、内側へ凹んだＵ字状断面の
屈曲部６ａが設けられ、この屈曲部６ａで内輪１の大径
端鍔１ａの外径面に圧入状態に嵌着される。芯金６の屈
曲部６ａよりも内径側に延びる部分は、内輪１の幅面を
内径端の近傍まで覆う幅押え部６ｂとされている。この
軸受は、軸９に内輪１が圧入により取付けられ、内輪鍔
８と内輪１の間に、シール５の芯金６における前記幅押
え部６ｂが挟み込むまれる。なお、９ａは、軸９に取付
けた部品を示し、このような軸取付部品９ａ、あるいは
軸９の段面等と軸受内輪１との間でシール５の芯金６を
挟み込んでも良い。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. This bearing is of a type in which a tapered roller 4 held by a cage 3 is interposed between an inner ring 1 with both collars and an outer ring 2 without a collar, and a seal 5 is provided at the large diameter end of the inner ring 1. is there. The large diameter end of the inner ring 1 projects in the width direction more than the outer ring 2 by the width dimension of the collar 1a. The seal 5 has a lip portion 7 made of an elastic material such as rubber on the outer diameter portion of a thin plate-shaped core metal 6.
Is provided, and the tip of the lip portion 7 contacts the width surface of the outer ring 2. The cored bar 6 is a press-molded ring plate-shaped member, and a bent portion 6a having a U-shaped cross section that is recessed inward is provided at an intermediate portion in the radial direction, and the bent portion 6a has a large-diameter end flange of the inner ring 1. The outer peripheral surface of 1a is press-fitted. A portion of the core metal 6 that extends toward the inner diameter side from the bent portion 6a is a width holding portion 6b that covers the width surface of the inner ring 1 to the vicinity of the inner diameter end. In this bearing, the inner ring 1 is attached to the shaft 9 by press fitting, and the width holding portion 6b of the core metal 6 of the seal 5 is sandwiched between the inner ring collar 8 and the inner ring 1. Reference numeral 9a denotes a component attached to the shaft 9, and the core metal 6 of the seal 5 may be sandwiched between the shaft attachment component 9a or the step surface of the shaft 9 and the bearing inner ring 1.
【０００７】この構成によると、シール５の芯金６が内
輪幅面の内径端の近傍まで突出しているため、軸受の予
圧等で内輪間座８と内輪１の間に作用する幅押え力によ
り、芯金６の幅押え部６ｂが内輪１の幅面に押し当てら
れ、シール５が堅固に固定される。そのため、振動等で
シール５が外れる恐れがない。小径の軸受の場合、シー
ル５の屈曲部６ｂにおける嵌合力が不足しがちとなる
が、このような小径軸受の場合に、前記の内輪幅押え力
によるシール５の固定が効果的となる。According to this structure, since the core metal 6 of the seal 5 projects to the vicinity of the inner diameter end of the inner ring width surface, the width pressing force acting between the inner ring spacer 8 and the inner ring 1 due to preload of the bearing, The width pressing portion 6b of the cored bar 6 is pressed against the width surface of the inner ring 1, and the seal 5 is firmly fixed. Therefore, there is no fear that the seal 5 will come off due to vibration or the like. In the case of a small-diameter bearing, the fitting force at the bent portion 6b of the seal 5 tends to be insufficient, but in the case of such a small-diameter bearing, the fixing of the seal 5 by the inner ring width pressing force is effective.
【０００８】図２はこのシール付き円すいころ軸受を使
用したステアリング装置の概略断面を示す。クロスシャ
フト１１の両端に小径部１１ｂを設けて円すいころ軸受
１０の内輪１を嵌合させ、各円すいころ軸受１０の外輪
２をハウジング１２のシャフト支持孔の内径面に嵌合さ
せて、両側のナット１３，１４により適度の予圧を軸受
１０に加えている。両軸受１０，１０は、大径端を互い
に対向させてある。これら円すいころ軸受１０，１０
は、図１の実施例のものであり、図２の左側の軸受１０
は、クロスシャフト１１の段面１１ｂと軸受内輪１との
間に図１の内輪間座８を介在させ、内輪間座８と軸受内
輪１とでシール５の芯金６を挟み込んである。図の右側
の軸受１０は、軸受内輪１の幅面に被せたシール５の芯
金６を直接にクロスシャフト１１の段面１１ｂに当接さ
せてある。クロスシャフト１１は、軸端１１ｃにピット
マンアーム（図示せず）が取付けられるものであり、ハ
ンドル（図示せず）によって回転させられるボールねじ
１５により、そのボールナット１５ａおよびラックピニ
オン機構１６を介して回転させられる。このような使用
例の場合等に、前記の予圧に伴う内輪幅押え力によるシ
ール外れの防止作用が効果的に得られる。[0008] Figure 2 shows a schematic cross-section of a steering apparatus using the seals circular tapered roller bearings. Small diameter portions 11b are provided at both ends of the cross shaft 11 to fit the inner ring 1 of the tapered roller bearing 10, and the outer ring 2 of each tapered roller bearing 10 is fitted to the inner diameter surface of the shaft support hole of the housing 12 so that A proper preload is applied to the bearing 10 by the nuts 13 and 14. The large diameter ends of both bearings 10, 10 are opposed to each other. These tapered roller bearings 10, 10
1 is the embodiment of FIG. 1, and the bearing 10 on the left side of FIG.
1, the inner ring spacer 8 of FIG. 1 is interposed between the step surface 11b of the cross shaft 11 and the bearing inner ring 1, and the core metal 6 of the seal 5 is sandwiched between the inner ring spacer 8 and the bearing inner ring 1. In the bearing 10 on the right side of the drawing, the core metal 6 of the seal 5 covering the width surface of the bearing inner ring 1 is directly brought into contact with the step surface 11b of the cross shaft 11. A pitman arm (not shown) is attached to the shaft end 11c of the cross shaft 11, and a ball screw 15 rotated by a handle (not shown) causes the ball nut 15a and the rack and pinion mechanism 16 to intervene. Is rotated. In the case of such a usage example, the effect of preventing the seal coming off due to the inner ring width pressing force due to the preload can be effectively obtained.
【０００９】[0009]
【発明の効果】この発明のシール付き円すいころ軸受
は、シールの芯金に、内輪の大径端鍔の外径面に嵌合す
るＵ字状断面の屈曲部と、内輪鍔の幅面を内径端の近傍
まで覆う幅押え部とを設けたため、内輪幅押え力を利用
してシールが内輪に固定され、振動等でシールが外れる
恐れがない。シールと内輪との嵌合力が不足する小径の
軸受で特にこの効果が発揮される。また、内輪間座と内
輪とでシールを挟み込むことで、前記の内輪幅押え力の
利用によるシール外れの防止効果が得易い。Effects of the Invention seals circular tapered roller bearing of this invention, the seal of the metal core, and a bent portion of the U-shaped cross section which fits an outer diameter surface of the inner ring of the large diameter end flange, the width surface of the inner ring flange Since the width pressing portion that covers the vicinity of the inner diameter end is provided, the seal is fixed to the inner ring by utilizing the inner ring width pressing force, and there is no fear that the seal will come off due to vibration or the like. This effect is particularly exerted on a bearing having a small diameter in which the fitting force between the seal and the inner ring is insufficient. Further, by sandwiching the seal between the inner ring spacer and the inner ring, it is easy to obtain the effect of preventing the seal from coming off due to the use of the inner ring width pressing force.
【図面の簡単な説明】[Brief description of drawings]
【図１】この発明の一実施例にかかるシール付き円すい
ころ軸受の部分断面図である。1 is a partial cross-sectional view of a seal with a circular tapered roller bearing according to an embodiment of the present invention.
【図２】同軸受を使用したステアリング装置の概略断面
図である。FIG. 2 is a schematic sectional view of a steering device using the bearing.
【図３】従来例の断面図である。FIG. 3 is a sectional view of a conventional example.
【図４】他の従来例の断面図である。FIG. 4 is a sectional view of another conventional example.
【符号の説明】 １…内輪、２…外輪、３…保持器、４…ころ、５…シー
ル、６…芯金、６ａ…屈曲部、６ｂ…幅押え部、７…リ
ップ部、８…内輪間座[Explanation of Codes] 1 ... Inner ring, 2 ... Outer ring, 3 ... Retainer, 4 ... Roller, 5 ... Seal, 6 ... Core metal, 6a ... Bent portion, 6b ... Width pressing portion, 7 ... Lip portion, 8 ... Inner ring Zama
Claims (2)
ップ部が接触する芯金付きのシールを内輪の大径端に設
けたシール付円すいころ軸受において、前記芯金に、内
輪の大径端鍔の外径面に嵌合するＵ字状断面の屈曲部
と、この屈曲部から内径側に延びて内輪の幅面を内径端
の近傍まで覆う幅押え部とを設けたシール付円すいころ
軸受。1. A tapered roller bearing with a seal, comprising an inner ring having both flanges, and a seal having a cored bar having a lip portion contacting the width surface of the outer ring provided at a large diameter end of the inner ring, wherein the cored bar has an inner ring. With a seal provided with a bent portion with a U-shaped cross section that fits on the outer diameter surface of the large-diameter end collar, and a width holding portion that extends from the bent portion to the inner diameter side and covers the width surface of the inner ring to the vicinity of the inner diameter end. Tapered roller bearing.
を軸に取付ける取付構造であって、内輪間座と内輪との
間で前記シールの芯金の前記幅押え部を挟み付けたシー
ル付円すいころ軸受の取付構造。2. A mounting structure for mounting the tapered tapered roller bearing with a seal according to claim 1 on a shaft, with a seal in which the width pressing portion of the core metal of the seal is sandwiched between an inner ring spacer and an inner ring. Tapered roller bearing mounting structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7067024A JPH08303473A (en) | 1995-02-28 | 1995-02-28 | Tapered roller bearing with seal and attaching structure for it |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7067024A JPH08303473A (en) | 1995-02-28 | 1995-02-28 | Tapered roller bearing with seal and attaching structure for it |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08303473A true JPH08303473A (en) | 1996-11-19 |
Family
ID=13332917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7067024A Pending JPH08303473A (en) | 1995-02-28 | 1995-02-28 | Tapered roller bearing with seal and attaching structure for it |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08303473A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012128316A1 (en) * | 2011-03-22 | 2012-09-27 | Ntn株式会社 | Roller bearing, and travel device provided with roller bearing |
| JP2012211691A (en) * | 2011-03-24 | 2012-11-01 | Ntn Corp | Roller bearing |
| US20150167743A1 (en) * | 2012-06-19 | 2015-06-18 | Ntn Corporation | Rolling bearing |
| WO2019020364A1 (en) * | 2017-07-26 | 2019-01-31 | Thyssenkrupp Industrial Solutions Ag | Combination of a rolling bearing and at least one cover element, and roller mill |
| US20230019353A1 (en) * | 2020-01-10 | 2023-01-19 | Sandcraft Llc | Double row tapered bearing with press fit preloading elements |
-
1995
- 1995-02-28 JP JP7067024A patent/JPH08303473A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012128316A1 (en) * | 2011-03-22 | 2012-09-27 | Ntn株式会社 | Roller bearing, and travel device provided with roller bearing |
| CN103477102A (en) * | 2011-03-22 | 2013-12-25 | Ntn株式会社 | Roller bearing, and travel device provided with roller bearing |
| AU2012232118B2 (en) * | 2011-03-22 | 2015-11-26 | Ntn Corporation | Roller bearing, and travel device provided with roller bearing |
| US9506554B2 (en) | 2011-03-22 | 2016-11-29 | Ntn Corporation | Rolling bearing and a travel unit including rolling bearings |
| US10302132B2 (en) | 2011-03-22 | 2019-05-28 | Ntn Corporation | Rolling bearing and a travel unit including rolling bearings |
| JP2012211691A (en) * | 2011-03-24 | 2012-11-01 | Ntn Corp | Roller bearing |
| JP2012211690A (en) * | 2011-03-24 | 2012-11-01 | Ntn Corp | Roller bearing |
| US20150167743A1 (en) * | 2012-06-19 | 2015-06-18 | Ntn Corporation | Rolling bearing |
| US9476457B2 (en) * | 2012-06-19 | 2016-10-25 | Ntn Corporation | Rolling bearing |
| AU2013278501B2 (en) * | 2012-06-19 | 2017-03-02 | Ntn Corporation | Rolling bearing |
| WO2019020364A1 (en) * | 2017-07-26 | 2019-01-31 | Thyssenkrupp Industrial Solutions Ag | Combination of a rolling bearing and at least one cover element, and roller mill |
| US20230019353A1 (en) * | 2020-01-10 | 2023-01-19 | Sandcraft Llc | Double row tapered bearing with press fit preloading elements |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2007177814A (en) | Sealing device and rolling bearing device using it | |
| JP2000170759A (en) | Propeller shaft supporting structure | |
| JP4654779B2 (en) | Seal member and rolling bearing unit with seal member | |
| JP5252489B2 (en) | Drive wheel support device | |
| JPH08303473A (en) | Tapered roller bearing with seal and attaching structure for it | |
| JP2008196627A (en) | Rolling bearing device | |
| JP2011069458A (en) | Bearing device for wheel | |
| JP4622638B2 (en) | Rack and pinion type steering gear | |
| JP2003159904A (en) | Bearing device | |
| DE60209938D1 (en) | WHEEL BEARING FOR MOTOR VEHICLE COLUMN | |
| JP2020020351A (en) | Wheel support rolling bearing unit | |
| JP2008190558A (en) | Bearing device for axle | |
| JP2020112172A (en) | Rolling bearing | |
| JP2013029131A (en) | Rolling bearing | |
| JP2007278518A (en) | Bearing device for vehicle | |
| JP2007303575A (en) | Cross shaft joint and vehicular steering device using the same | |
| US20150377298A1 (en) | Sealing arrangement for axial roller bearings | |
| JP4756363B2 (en) | Rolling bearing sealing device | |
| JP2006207685A (en) | Axle bearing device | |
| WO2018056000A1 (en) | Bearing device for axle | |
| JP2006336759A (en) | Bearing device for wheel | |
| JP2013194774A (en) | Rolling bearing | |
| KR101814596B1 (en) | Wheel bearing and sealing apparatus thereof | |
| JP2013029132A (en) | Rolling bearing | |
| JPH06144539A (en) | Radial bearing unit for roller and roller fitted therewith |