JPH04117213U - Bearing seal structure - Google Patents

Bearing seal structure

Info

Publication number
JPH04117213U
JPH04117213U JP1991098893U JP9889391U JPH04117213U JP H04117213 U JPH04117213 U JP H04117213U JP 1991098893 U JP1991098893 U JP 1991098893U JP 9889391 U JP9889391 U JP 9889391U JP H04117213 U JPH04117213 U JP H04117213U
Authority
JP
Japan
Prior art keywords
grease
bearing
seal
seal case
ring
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
Application number
JP1991098893U
Other languages
Japanese (ja)
Inventor
俊明 寺倉
圭治 柳田
肇 野村
昌之 野崎
Original Assignee
エヌテイエヌ株式会社
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 by エヌテイエヌ株式会社 filed Critical エヌテイエヌ株式会社
Priority to JP1991098893U priority Critical patent/JPH04117213U/en
Publication of JPH04117213U publication Critical patent/JPH04117213U/en
Pending legal-status Critical Current

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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
    • F16C33/7816—Details of the sealing or parts thereof, e.g. geometry, material
    • F16C33/782—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region
    • F16C33/7826—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of the opposing surface cooperating with the seal, e.g. a shoulder surface of a bearing ring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • 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
    • F16C19/38—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 two or more rows of rollers
    • F16C19/383—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 two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • F16C19/385—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 two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings
    • F16C19/386—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 two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings in O-arrangement
    • 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
    • F16C2326/00—Articles relating to transporting
    • F16C2326/10—Railway vehicles

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

(57)【要約】 【目的】 外輪１６の端部にシールケース２２を取り付
けて軸受１０の内・外輪１４、１６間の開口部分を覆う
ようにした軸受のシール構造において、軸受内部に充填
されたグリースがシールケース２２内の空所に押し出さ
れるのを防止する。 【構成】 内輪１４のつば１４ａ付近に位置して内輪１
４のつば１４ａよりも外径側のシールケース２２内の空
間を狭める遮蔽部材３０を具備する。 (57) [Summary] [Purpose] A bearing seal structure in which a seal case 22 is attached to the end of the outer ring 16 to cover the opening between the inner and outer rings 14 and 16 of the bearing 10. This prevents the grease from being forced out into the void inside the seal case 22. [Configuration] The inner ring 1 is located near the collar 14a of the inner ring 14.
A shielding member 30 is provided to narrow the space inside the seal case 22 on the outer diameter side of the collar 14a of the seal case 22.

Description

【考案の詳細な説明】[Detailed explanation of the idea]

【０００１】0001

【産業上の利用分野】[Industrial application field]

この考案は鉄道車両の車軸用軸受のシール構造に関する。 This invention relates to a seal structure for an axle bearing of a railway vehicle.

【０００２】0002

【従来の技術】[Conventional technology]

鉄道車両の車軸用軸受のシール構造としては、従来、図９に示されるような接 触型のものと、図１０に示されるような非接触型のものが知られている。いずれ も、外輪６の端部にシールケース２を取り付けて内・外輪４、６間の開口部分を 覆うようにしている。 Conventionally, the seal structure of axle bearings for railway vehicles has been made using a contact structure as shown in Fig. 9. A contact type and a non-contact type as shown in FIG. 10 are known. Either Also, attach the seal case 2 to the end of the outer ring 6 and close the opening between the inner and outer rings 4 and 6. I try to cover it.

【０００３】 ところが、高速車両においては、周速が高いことから、従来用いられていた接 触シール（図９）の使用は適さない。一方、非接触シール（図１０）の場合、接 触シールに比べてシールが完全ではなく、内部グリースの漏れ、あるいは外部か らの水やダストの浸入が発生するおそれがある。0003 However, due to the high circumferential speed of high-speed vehicles, the conventional contact Touch seals (Figure 9) are not suitable for use. On the other hand, in the case of non-contact seals (Fig. 10), The seal is not as perfect as the contact seal, and there may be internal grease leakage or external There is a risk of water and dust intrusion.

【０００４】 また、長期使用後の軸受を調査してみると、グリースが図１１に白抜き矢印で 示すように軸受内部からシールケース内の空所に押し出されており（斜線部Ａ） 、とりわけ重要部位である内輪の大つば付近にはグリースが有効に残存していな い、という問題があった。これは、グリースが運転中軸受のポンプ作用により押 し出されてグリースポケットに堆積するためで、この堆積したグリースはほとん ど移動せず、軸受の潤滑に寄与しない。0004 In addition, when we investigated the bearing after long-term use, we found that grease was found as indicated by the white arrow in Figure 11. As shown, it is pushed out from inside the bearing into the space inside the seal case (shaded area A). In particular, the grease does not remain effectively near the large brim of the inner ring, which is an important area. There was a problem. This is because the grease is pushed down by the pumping action of the bearing during operation. This is because the grease is pumped out and deposited in the grease pocket, and most of this deposited grease is It does not move and does not contribute to bearing lubrication.

【０００５】[0005]

【考案が解決しようとする課題】[Problem that the idea aims to solve]

この考案の主な目的は、軸受内部に充填されたグリースがシールケース内の空 所に押し出されるのを防止することである。 The main purpose of this invention is that the grease filled inside the bearing is This is to prevent it from being pushed out.

【０００６】 また、鉄道車両に使用される軸受は高速化と長期メンテナンスフリー化が要求 されているため、潤滑剤の長期耐久性が必要となる。そこで、この考案の他の目 的は、ポケット内の端部に堆積したグリースを移動させて軸受の潤滑に有効利用 することである。[0006] In addition, bearings used in railway vehicles are required to be high-speed and long-term maintenance-free. Therefore, long-term durability of the lubricant is required. Therefore, another aspect of this idea is The purpose is to move the grease accumulated at the end of the pocket and use it effectively to lubricate the bearing. It is to be.

【０００７】[0007]

【課題を解決するための手段】[Means to solve the problem]

この考案による軸受のシール構造は、外輪の端部にシールケースを取り付けて 軸受の内・外輪間の開口部分を覆うようにしたものにおいて、内輪のつば付近に 位置して内輪のつばよりも外径側のシールケース内の空間を狭める遮蔽部材を具 備することを特徴としている。 The seal structure of the bearing based on this idea consists of attaching a seal case to the end of the outer ring. In bearings that cover the opening between the inner and outer rings, there is a It is equipped with a shielding member that narrows the space inside the seal case on the outer diameter side than the inner ring collar. It is characterized by being equipped with

【０００８】[0008]

【作用】[Effect]

遮蔽部材が内輪のつば付近に位置して内輪のつばよりも外径側のシールケース 内の空間を狭めているため、その分だけシールケース内の空所が埋められ、軸受 内部に充填されたグリースがシールケース内の空所に流出しようとするのをせき 止める働きをする。 A seal case in which the shielding member is located near the inner ring collar and is on the outer diameter side of the inner ring collar. Since the space inside the seal case is narrowed, the empty space inside the seal case is filled accordingly, and the bearing Prevents the grease filled inside from flowing out into the cavity inside the seal case. It works to stop.

【０００９】[0009]

【実施例】【Example】

図１は、複列円錐ころ軸受を使用した鉄道車両の車軸用軸受１０を例示してい る。この車軸用軸受１０は、車軸１２と嵌合した一対の内輪１４、図示してない 軸受箱ないしハウジングと嵌合する外輪１６、および内・外輪１４、１６間に転 動自在に介在する複列の転動体つまりこの場合円錐ころ１８を主要な構成要素と している。 FIG. 1 illustrates a bearing 10 for an axle of a railway vehicle using a double-row tapered roller bearing. Ru. This axle bearing 10 includes a pair of inner rings 14 (not shown) fitted to an axle 12. An outer ring 16 that fits into the bearing box or housing, and a rolling element between the inner and outer rings 14 and 16. The main component is a movably interposed double row of rolling elements, that is, tapered rollers 18 in this case. are doing.

【００１０】 車軸用軸受１０の両端部にシール装置２０がある。すなわち、図２に拡大して 示すように、大径端部を外輪１６の内径面に圧入したシールケース２２によって 内・外輪１４、１６間の開口部分が覆われている。シールケース２２の小径端部 には弾性材料でできたオイルシール２４が固着している。オイルシール２４は２ 段のダストリップ２６ａ、２６ｂを有する。第一のダストリップ２６ａはほぼ軸 方向に伸び出しており、スリンガ２７に形成された環状溝２７ａに挿入されてそ の壁面に弾性的に摺接する。第二のダストリップ２６ｂは斜め下方に伸び出して スリンガ２７の円筒面に摺接する。これらのダストリップ２６ａ、２６ｂは、（ スリンガ２７を介して）車軸１２に対してわずかな緊迫力を与えることにより摺 動発熱を抑えつつ外部からの水、ダストの浸入を防止する役割を果たす。なお、 必ずしも緊迫力を与えなくても、緊迫力が零に近いものや、あるいは僅かなすき まを持たせることも可能である。オイルシール２４とスリンガ２７とが対向して 半径方向すきまを形成する部分には１本以上のラビリンス溝２８を設けることに よりラビリンス効果を向上させている。0010 There are sealing devices 20 at both ends of the axle bearing 10. In other words, enlarged to Figure 2, As shown, the seal case 22 whose large diameter end is press-fitted into the inner diameter surface of the outer ring 16 The opening between the inner and outer rings 14 and 16 is covered. Small diameter end of seal case 22 An oil seal 24 made of an elastic material is fixed to the. Oil seal 24 is 2 It has tiered dust lips 26a, 26b. The first dust lip 26a is approximately axially It extends in the direction, and is inserted into the annular groove 27a formed in the slinger 27. Elastic sliding contact with the wall surface. The second dust lip 26b extends diagonally downward. It comes into sliding contact with the cylindrical surface of the slinger 27. These dust lips 26a, 26b are ( Sliding force is applied to the axle 12 (via the slinger 27). It plays the role of preventing water and dust from entering from the outside while suppressing dynamic heat generation. In addition, Even if the tension is not necessarily applied, the tension is close to zero, or there is a slight gap. It is also possible to have some time. The oil seal 24 and the slinger 27 face each other. One or more labyrinth grooves 28 are provided in the portion where the radial clearance is formed. This further improves the labyrinth effect.

【００１１】 内輪１４とスリンガ２７との間に遮蔽部材としてラビリンスリング３０が介在 する。ラビリンスリング３０は外径側に２つの突起３２ａ、３２ｂを有し、オイ ルシール２４との間に半径方向すきまを形成するとともに、突起３２ａ、３２ｂ により軸受内部からグリースが流出しようとするのを阻止して内輪１４の大つば １４ａ部にグリースを残存させる。また、内輪１４の大つば１４ａの外径との嵌 合部３６を設けてラビリンスリング３０を安定させ、軸受の組立時あるいは運転 時のがたつきを防止する。[0011] A labyrinth ring 30 is interposed between the inner ring 14 and the slinger 27 as a shielding member. do. The labyrinth ring 30 has two protrusions 32a and 32b on the outer diameter side, and A radial gap is formed between the seal 24 and the protrusions 32a, 32b. The large flange of the inner ring 14 prevents the grease from flowing out from inside the bearing. Grease remains in section 14a. Also, the fit between the outer diameter of the large rib 14a of the inner ring 14 The joint 36 is provided to stabilize the labyrinth ring 30, and the labyrinth ring 30 is stabilized during bearing assembly or operation. Prevent the rattling of time.

【００１２】 この実施例では、ラビリンスリング３０の突起３２ｂ部分の内径面とオイルシ ール２４の外径面との間の半径方向すきま、オイルシール２４の内径面とスリン ガの円筒面との間の半径方向すきま等によってラビリンスが構成される。このよ うなラビリンス構造では軸受メンテナンス時に容易にオイルシールが離脱できな いという不便さがあったが（図１０参照）、ラビリンスリング３０の内径側にシ ールケース離脱用の治具（図示せず）を引っ掛けるための段３８を設けることに より、この段３８に治具を引っ掛けて軸方向に力を加えると、シールケース２２ を外輪１６から取り外すことができるので、メンテナンス等に際して必要な軸受 の分解が容易になる。0012 In this embodiment, the inner diameter surface of the projection 32b portion of the labyrinth ring 30 and the oil seal The radial clearance between the outer diameter surface of the oil seal 24 and the inner diameter surface of the oil seal 24. A labyrinth is formed by the radial gap between the moth and the cylindrical surface. This way With the labyrinth structure, the oil seal cannot be easily removed during bearing maintenance. However, there was an inconvenience that the labyrinth ring 30 was A step 38 is provided for hooking a jig (not shown) for removing the case. Therefore, when a jig is hooked to this step 38 and force is applied in the axial direction, the seal case 22 can be removed from the outer ring 16, so the bearing can be removed when necessary for maintenance etc. becomes easier to disassemble.

【００１３】 上述の図１および図２の実施例は、遮蔽部材たるラビリンスリング３０に、グ リースの流出を防止することに加えて、ラビリンスシールの作用やシールケース の分離を助ける手段としての役割をも持たせているが、以下に、より簡易な遮蔽 部材を採用した実施例を図３〜図５に従って説明する。[0013] In the embodiments shown in FIGS. 1 and 2 described above, the labyrinth ring 30 serving as the shielding member is provided with a group. In addition to preventing lease leakage, the action of the labyrinth seal and the seal case Although it also has the role of a means to assist in the separation of An embodiment employing the members will be described with reference to FIGS. 3 to 5.

【００１４】 まず、図３に示す実施例は、ラビリンスリング３０に代えてもっと単純な形状 の遮蔽板４０ａを内輪１４の大つば１４ａにあてがったものである。遮蔽板４０ ａは、グリースの流出を防止するうえにおいてラビリンスリング３０の突起３２ ａ、３２ｂと同様の働きをする２つの突起４２ａ、４２ｂを有する。[0014] First, the embodiment shown in FIG. 3 uses a simpler shape instead of the labyrinth ring 30. A shielding plate 40a is applied to the large brim 14a of the inner ring 14. Shielding plate 40 a is the protrusion 32 of the labyrinth ring 30 in order to prevent grease from flowing out. It has two protrusions 42a and 42b that function similarly to protrusions a and 32b.

【００１５】 次に、図４に示す実施例は、グリースの流出を防止する働きをする断面Ｌ字型 の遮蔽板４０ｂをシールケース２２の内径面に設け、半径方向に延在する内向き フランジないし円板部を内輪１４の大つば１４ａ側の端面に近接させている。[0015] Next, the embodiment shown in FIG. 4 has an L-shaped cross section that serves to prevent grease from flowing out. A shielding plate 40b is provided on the inner diameter surface of the seal case 22, and a shielding plate 40b is provided on the inner diameter surface of the seal case 22, and The flange or disc portion is located close to the end face of the inner ring 14 on the large flange 14a side.

【００１６】 図５に示す実施例は、グリースの流出を防止する働きをする円板状の遮蔽板４ ０ｃを保持器１５に固着させ、その内径側を内輪１４の大つば１４ａの外径面に 近接させている。[0016] The embodiment shown in FIG. 5 has a disk-shaped shielding plate 4 that functions to prevent grease from flowing out. 0c is fixed to the retainer 15, and its inner diameter side is attached to the outer diameter surface of the large collar 14a of the inner ring 14. They are kept close together.

【００１７】 遮蔽板４０ａ〜４０ｃの材料は金属材料でも非金属材料でもよく、また、固定 方法も材料によって圧入、接着、モールドなどの適当なものを選択できる。これ らの実施例は既存の車軸軸受の構造を何ら変更することなく実施することができ るという有利さがある。なお、図３〜５は、シールケース２２の先端にオイルシ ールを取り付けてスリンガ２７の外径面に接触させた接触型のものに適用した場 合を例示している。[0017] The material of the shielding plates 40a to 40c may be a metal material or a nonmetallic material. Appropriate methods such as press-fitting, adhesion, and molding can be selected depending on the material. this These embodiments can be implemented without making any changes to the existing axle bearing structure. It has the advantage of being 3 to 5 show an oil seal at the tip of the seal case 22. When applied to a contact type device in which a roller is attached and brought into contact with the outer diameter surface of the slinger 27. This is an example of the case.

【００１８】 図６に示す実施例は上述の図４の実施例における遮蔽板４０ｂの円板部の形状 を変更したものに相当する。すなわち、シールケース２２に取り付ける遮蔽板４ ０ｄに円すい形状のグリース案内部４５を形成させ、その小径端部を内輪１４の つば１４ａの外径面に沿わせる。これにより、ポンプ作用で押し出されたグリー スを外輪１６側に誘導して再循環させることができる。なお、図６はシールケー ス取り外し用リング（図４参照）の形状を変更して遮蔽板４０ｄとした場合を例 示しているが、シールケース取り外し用リングはそのままにしておいて別部材の 遮蔽板を付加することもできる。[0018] The embodiment shown in FIG. 6 has the shape of the disk portion of the shielding plate 40b in the embodiment shown in FIG. This corresponds to a modified version of . That is, the shielding plate 4 attached to the seal case 22 A conical grease guide part 45 is formed at 0d, and its small diameter end is connected to the inner ring 14. along the outer diameter surface of the brim 14a. This allows the grease to be pushed out by the pump action. The gas can be guided to the outer ring 16 side and recirculated. In addition, Figure 6 shows the seal case. An example of the case where the shape of the ring for removing the base plate (see Figure 4) is changed and a shielding plate 40d is used. However, leave the seal case removal ring as it is and replace it with a separate part. A shielding plate can also be added.

【００１９】 図７に示す実施例は、シールケース２２の形状を図示のように変更し、大径部 を長くしてポケット容積を大きくするとともに、円すい形のグリース案内板４０ ｅを設けることによってポンプ作用で押し出されたグリースが外輪１６側へ移動 しやすくしたものである。この実施例のようにポケット容積を大きくすることに よって、長期メンテナンスフリー化のため初期グリース封入量が現行より多くな る傾向に対応することができる。[0019] In the embodiment shown in FIG. 7, the shape of the seal case 22 is changed as shown in the figure, and the large diameter part The pocket volume is increased by increasing the length of the conical grease guide plate 40. By providing e, the grease pushed out by the pump action moves to the outer ring 16 side. This is made easier. Increasing the pocket volume as in this example Therefore, in order to achieve long-term maintenance-free operation, the initial amount of grease filled should be larger than the current amount. It is possible to respond to trends in

【００２０】 図６、図７の実施例では、内輪間座１３を両端部にいくほど大径となるような 形状にして、軸受中央部から保持器１５の内径面へグリースの誘導を図るように している。内輪間座のこのような形状は他のどの実施例においても採用すること ができる。[0020] In the embodiments shown in FIGS. 6 and 7, the diameter of the inner ring spacer 13 becomes larger toward both ends. The shape is designed to guide grease from the center of the bearing to the inner diameter surface of the retainer 15. are doing. This shape of the inner ring spacer may be adopted in any other embodiments. I can do it.

【００２１】 図８に示す実施例は、ストレート形状のシールケース２２に代えて、軸受１０ 側に向かって拡径した円すい形状のシールケース２２ａを採用したものである。 なお、シールケース２２ａを外輪１６に組み込む時に使用される組込み治具のシ ールケース２２ａとの当たり面はシールケース２２ａの円すい形状と同一にする 。鉄道車両車軸用転がり軸受のグリース枯渇による早期焼き付きを防止するため にグリース溜りに残留しているグリースが循環しやすくして潤滑性能の向上を図 る。すなわち、従来の軸受はグリース溜りに溜まったグリースを軸受内部に引き 込む機構がないため車両走行中もグリースは軸受内部に移動することなく大部分 が利用されないという欠点があったので、シールケースの形状に工夫を加えてグ リース溜りのグリースが循環しやすくしようとするものである。なお、この実施 例は、上述のいずれかの実施例と組み合わせて実施をすることもできる。[0021] The embodiment shown in FIG. 8 has a bearing 10 instead of a straight seal case 22. A conical seal case 22a whose diameter increases toward the side is employed. Note that the assembly jig used when assembling the seal case 22a into the outer ring 16 is The contact surface with the seal case 22a should be the same as the conical shape of the seal case 22a. . To prevent early seizure due to grease depletion in rolling bearings for railway vehicle axles. Improves lubrication performance by making it easier for the grease remaining in the grease reservoir to circulate. Ru. In other words, conventional bearings pull the grease accumulated in the grease reservoir into the bearing. Most of the grease does not move inside the bearing even when the vehicle is running because there is no mechanism to inject it into the bearing. Since there was a drawback that the seal case was not used, we added some innovation to the shape of the seal case to create a seal case. This is intended to facilitate the circulation of grease in the grease reservoir. Please note that this implementation The examples can also be implemented in combination with any of the embodiments described above.

【００２２】 この実施例によれば、シールケース２２ａの軸受１０側が円すい形状に開いて いることにより、グリース溜りに溜まったグリースは車両走行中における上下振 動のため発生する力によりシールケース２２ａの底部に移動し、ころ１８、保持 器１５による攪拌作用で軸受内部に供給される。したがって、グリース溜りのグ リースを潤滑に有効利用して、潤滑寿命の向上、グリース枯渇による早期焼き付 きの防止を図ることができる。しかも、従来構造のうち部品１点すなわちシール ケースの形状を変更するだけでよいため低コストで実施できる。[0022] According to this embodiment, the bearing 10 side of the seal case 22a is opened in a conical shape. As a result, the grease accumulated in the grease reservoir is prevented from vertical vibration while the vehicle is running. Due to the force generated due to the movement, the roller 18 moves to the bottom of the seal case 22a and holds the roller 18. It is supplied to the inside of the bearing by the stirring action of the vessel 15. Therefore, the grease in the grease pool Effective use of lease for lubrication improves lubrication life and prevents premature seizure due to grease depletion It is possible to prevent this from happening. Moreover, only one component in the conventional structure, namely the seal, Since it is only necessary to change the shape of the case, it can be implemented at low cost.

【００２３】[0023]

【考案の効果】[Effect of the idea]

以上のように、この考案は、外輪の端部にシールケースを取り付けて軸受の内 ・外輪間の開口部分を覆うようにしたものにおいて、内輪のつば付近に位置して 内輪のつばよりも外径側のシールケース内の空間を狭める遮蔽部材を具備するも のであるから、遮蔽部材が内輪のつばよりも外径側のシールケース内の空間を埋 め、軸受内部に充填されたグリースが流出しようとするのをせき止める働きをす る。 As described above, this idea attaches a seal case to the end of the outer ring to protect the inside of the bearing. ・For those designed to cover the opening between the outer rings, it is located near the brim of the inner ring. It is equipped with a shielding member that narrows the space inside the seal case on the outer diameter side than the inner ring collar. Therefore, the shielding member fills the space inside the seal case on the outer diameter side than the inner ring collar. It acts as a dam to prevent the grease filled inside the bearing from flowing out. Ru.

【００２４】 したがって、従来のように軸受内部に充填されていたグリースがシールケース 内の空所に押し出されてしまって潤滑効果が低下するといった不具合は解消する 。遮蔽部材は内輪のつばよりも外径側のシールケース内の空間を狭めているので 、つばの、ころ端面を案内するつば面付近に充填されたグリースが外側に移動す るのを阻止して、この部分に良好な潤滑状態を確保することができる。[0024] Therefore, the grease that was filled inside the bearing as in the conventional case is removed from the seal case. Problems such as the lubricating effect being reduced due to the lubricant being pushed out into the empty space will be resolved. . The shielding member narrows the space inside the seal case on the outer diameter side than the inner ring collar. , the grease filled near the rib surface that guides the roller end surface moves outward. It is possible to prevent this from occurring and ensure good lubrication in this area.

【００２５】 これらの結果、軸受のメンテナンス周期の延長が可能となるという効果が得ら れる。[0025] As a result, the bearing maintenance cycle can be extended. It will be done.

【００２６】 また、このようにしてグリースがつば付近でせき止められることから、シール ケースの先端に位置するオイルシール近傍に滞留するグリースが少なくなるため 、グリース洩れが一層確実に防止される。[0026] In addition, since the grease is blocked near the brim in this way, the seal This reduces the amount of grease that accumulates near the oil seal located at the tip of the case. , grease leakage is more reliably prevented.

【００２７】 さらに、図１および図２の実施例のようにラビリンスリングの内径側にシール ケース離脱用の治具を引っ掛けるための段を設けておけばシールケースの取り外 しが容易になるという効果が得られる。[0027] Furthermore, as in the embodiments shown in Figures 1 and 2, a seal is placed on the inner diameter side of the labyrinth ring. The seal case can be removed easily if a step is provided to hook the case removal jig. This has the effect of making it easier to clean.

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

【図１】第１の実施例の縦断面図[Fig. 1] Longitudinal cross-sectional view of the first embodiment

【図２】図１の主要部の拡大図[Figure 2] Enlarged view of the main parts of Figure 1

【図３】第２の実施例の主要部の断面図[Fig. 3] Cross-sectional view of main parts of the second embodiment

【図４】第３の実施例の主要部の断面図[Fig. 4] Cross-sectional view of main parts of the third embodiment

【図５】第４の実施例の主要部の断面図[Fig. 5] Cross-sectional view of main parts of the fourth embodiment

【図６】第５の実施例の主要部の断面図[Fig. 6] Cross-sectional view of main parts of the fifth embodiment

【図７】第６の実施例の主要部の断面図[Fig. 7] Cross-sectional view of main parts of the sixth embodiment

【図８】第７の実施例の主要部の断面図[Fig. 8] Cross-sectional view of main parts of the seventh embodiment

【図９】接触型の従来例を示す主要部の縦断面図[Fig. 9] Longitudinal cross-sectional view of main parts showing a conventional contact type example

【図１０】非接触型の従来例を示す主要部の縦断面図[Fig. 10] Longitudinal cross-sectional view of main parts showing a conventional non-contact type example

【図１１】グリースが押し出される様子を示す縦断面図[Fig. 11] Vertical cross-sectional view showing how grease is extruded

【符号の説明】[Explanation of symbols]

１０ 車軸用軸受 １２ 車軸 １３ 内輪間座 １４ 内輪 １４ａ つば １５ 保持器 １６ 外輪 １８ 円錐ころ（転動体） ２０ シール装置 ２２、２２ａ シールケース ２４ オイルシール ２６ａ、２６ｂ ダストリップ ２７ スリンガ ２８ ラビリンス溝 ３０ ラビリンスリング（遮蔽部材） ３２ａ、３２ｂ 突起 ３６ 嵌合部 ３８ 段 ４０ａ〜４０ｄ 遮蔽板（遮蔽部材） ４０ｅ グリース案内板（遮蔽部材） 10 Axle bearing 12 Axle 13 Inner ring spacer 14 Inner circle 14a Brim 15 Cage 16 Outer ring 18 Tapered roller (rolling element) 20 Sealing device 22, 22a Seal case 24 Oil seal 26a, 26b dust lip 27 Slinger 28 Labyrinth groove 30 Labyrinth ring (shielding member) 32a, 32b protrusions 36 Fitting part 38 steps 40a-40d Shielding plate (shielding member) 40e Grease guide plate (shielding member)

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項１】 外輪の端部にシールケースを取り付けて
軸受の内・外輪間の開口部分を覆うようにしたものにお
いて、内輪のつば付近に位置して内輪のつばよりも外径
側のシールケース内の空間を狭める遮蔽部材を具備する
軸受のシール構造。Claim 1: In a bearing in which a seal case is attached to the end of the outer ring to cover the opening between the inner and outer rings of the bearing, the seal is located near the rib of the inner ring and is located on the outer diameter side of the rib of the inner ring. A bearing seal structure that includes a shielding member that narrows the space inside the case.
JP1991098893U 1991-01-31 1991-11-29 Bearing seal structure Pending JPH04117213U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1991098893U JPH04117213U (en) 1991-01-31 1991-11-29 Bearing seal structure

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP3-9599 1991-01-31
JP959991 1991-01-31
JP1991098893U JPH04117213U (en) 1991-01-31 1991-11-29 Bearing seal structure

Publications (1)

Publication Number Publication Date
JPH04117213U true JPH04117213U (en) 1992-10-20

Family

ID=31948223

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1991098893U Pending JPH04117213U (en) 1991-01-31 1991-11-29 Bearing seal structure

Country Status (1)

Country Link
JP (1) JPH04117213U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009264450A (en) * 2008-04-23 2009-11-12 Jtekt Corp Rolling bearing device
JP2011052775A (en) * 2009-09-02 2011-03-17 Ntn Corp Rolling bearing device
JP2016142364A (en) * 2015-02-03 2016-08-08 Ntn株式会社 Bearing device for railway vehicle
JP2020046587A (en) * 2018-09-20 2020-03-26 富士ゼロックス株式会社 Toner conveying device, developing device, and image forming apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009264450A (en) * 2008-04-23 2009-11-12 Jtekt Corp Rolling bearing device
JP2011052775A (en) * 2009-09-02 2011-03-17 Ntn Corp Rolling bearing device
JP2016142364A (en) * 2015-02-03 2016-08-08 Ntn株式会社 Bearing device for railway vehicle
WO2016125516A1 (en) * 2015-02-03 2016-08-11 Ntn株式会社 Bearing device for railway vehicle
JP2020046587A (en) * 2018-09-20 2020-03-26 富士ゼロックス株式会社 Toner conveying device, developing device, and image forming apparatus

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