JPH085370Y2 - Rolling bearing for energization - Google Patents
Rolling bearing for energizationInfo
- Publication number
- JPH085370Y2 JPH085370Y2 JP1989150695U JP15069589U JPH085370Y2 JP H085370 Y2 JPH085370 Y2 JP H085370Y2 JP 1989150695 U JP1989150695 U JP 1989150695U JP 15069589 U JP15069589 U JP 15069589U JP H085370 Y2 JPH085370 Y2 JP H085370Y2
- Authority
- JP
- Japan
- Prior art keywords
- current
- bearing
- sliding contact
- carrying
- lip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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
- F16C33/7816—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
- F16C33/7823—Details of the sealing or parts thereof, e.g. geometry, material of the sealing region of sealing lips
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/76—Sealings of ball or roller bearings
- F16C33/78—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members
- F16C33/784—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race
- F16C33/7843—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc
- F16C33/7853—Sealings of ball or roller bearings with a diaphragm, disc, or ring, with or without resilient members mounted to a groove in the inner surface of the outer race and extending toward the inner race with a single annular sealing disc with one or more sealing lips to contact the inner 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
- F16C19/02—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows
- F16C19/04—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly
- F16C19/06—Bearings with rolling contact, for exclusively rotary movement with bearing balls essentially of the same size in one or more circular rows for radial load mainly with a single row or balls
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は、通電を必要とする箇所に使用される転がり
軸受に関し、詳しくは、内・外輪間を、通電グリースと
通電シールとによって電気的に導通させた通電用転がり
軸受に関する。[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a rolling bearing used in a place where electricity needs to be energized. The present invention relates to a current-carrying rolling bearing that is electrically connected to the.
複写機、LBP（レーザービームプリンター）の現像部
（主にマグネットローラ部）等のように軸受に通電効果
を必要とする箇所、あるいは、ビデオテープレコーダの
回転ドラム等のように高速回転によって高圧の静電気が
発生する箇所に、通電用軸受が使用されている。通電用
軸受は、通常、導電性をもたない基油（ベースオイル）
に導電物質を混入した通電グリースがその内部に封入さ
れており、通電グリースの導電性を利用して軸受の内外
輪間の通電を行なうものである。しかし、高温下で使用
される箇所、あるいは、ビデオテープレコーダの回転ド
ラム等のように高速回転で使用される箇所においては、
通電グリースの酸化劣化等によって通電グリースの導電
性が低下する場合があり、結果、電食による軸受損傷、
静電ノイズによる画像むら等が発生する。これを解決す
る方法として、通電シールを用いる方法が、例えば、実
開昭61-93628号公報に記載されている。上記通電シール
は、例えば、導電性ゴムで形成され、その基端部が軸受
の外輪に固定支持されると共に、その摺接部が、内輪と
摺接することによって、内外輪間の通電を短絡的に行な
うものである。通電シールとして、グリースの封止と通
電とを行なう１つのリップのみを備えたものが例示され
ている。A place where a bearing needs to be energized, such as a copying machine or a developing section (mainly a magnet roller section) of an LBP (laser beam printer), or a high-pressure rotating high voltage such as a rotating drum of a video tape recorder. An energizing bearing is used in places where static electricity is generated. Current bearings are usually non-conductive base oils.
Conductive grease mixed with a conductive substance is sealed inside, and the conductivity of the conductive grease is used to conduct electricity between the inner and outer rings of the bearing. However, in places where it is used at high temperatures or where it is used at high speed such as the rotating drum of a video tape recorder,
The conductivity of the energizing grease may decrease due to oxidative deterioration of the energizing grease, resulting in damage to the bearing due to electrolytic corrosion,
Image unevenness or the like occurs due to electrostatic noise. As a method for solving this, a method using an electric seal is described in, for example, Japanese Utility Model Publication No. 61-93628. The current-carrying seal is formed of, for example, conductive rubber, and its base end is fixedly supported by the outer ring of the bearing, and its sliding contact part makes sliding contact with the inner ring to short-circuit the current flow between the inner and outer rings. This is what you do. As the current-carrying seal, one having only one lip for sealing the grease and conducting the current is illustrated.
これに対し、第６図に示すように、摺接部（23）に２
つのリップが形成された通電シールを用いた構成が知ら
れている。摺接部（23）は、二又状にわかれ、第１リッ
プ（24）および第２リップ（25）を形成する。第１リッ
プは、その先端部を内輪（26）に設けられた凹溝（27）
の傾斜面（29）に摺接することによって軸受の内輪（2
6）と外輪（図示せず）を電気的に導通すると共に、軸
受内に封入された通電グリースを封止する。第２リップ
（25）は、その先端部が内輪（26）との間に僅かな隙間
（28）を形成し、軸受の回転に伴うラビリンス効果によ
って外部からの異物侵入を防止する。On the other hand, as shown in FIG.
A configuration using a current-carrying seal having two lips is known. The sliding contact portion (23) is split into two pieces and forms a first lip (24) and a second lip (25). The first lip has a concave groove (27) formed in the inner ring (26) at its tip.
The inner ring of the bearing (2
6) Conduct electrical conduction between the outer ring (not shown) and the outer ring, and seal the energizing grease sealed in the bearing. The second lip (25) forms a slight gap (28) between the tip of the second lip (25) and the inner ring (26), and prevents foreign matter from entering from the outside by the labyrinth effect accompanying the rotation of the bearing.
上述したように、上記通電シールは摺接部（23）にお
いて、第１リップ（24）のみを内輪（26）に摺接させる
ため、上記第１リップ（24）の先端部と内輪（26）の傾
斜面（29）との間に通電グリースの基油が油膜を形成し
た場合、あるいは、酸化劣化によって導電性の低下した
通電グリースが油膜形成した場合、上記通電シールの通
電効果が低下し、さらには消失するという問題がある。
尚、実開昭61-93628号の通電シールも、グリースの封止
と通電とを１つのリップのみで行なう構成であるため、
同様の問題がある。そこで、本考案は、通電シールがグ
リースの影響を受けずに、安定した通電効果を有する通
電用転がり軸受の提供を目的とする。As described above, in the sliding contact portion (23) of the current-carrying seal, only the first lip (24) is slidably brought into contact with the inner ring (26). Therefore, the tip of the first lip (24) and the inner ring (26) are brought into contact with each other. If the base oil of the current-carrying grease forms an oil film between the inclined surface (29) or the current-carrying grease whose conductivity has decreased due to oxidative deterioration forms an oil film, the current-carrying effect of the current-carrying seal decreases. Furthermore, there is a problem of disappearance.
In addition, since the current-carrying seal of No. 61-93628 is also configured to seal grease and carry current with only one lip,
I have a similar problem. Therefore, an object of the present invention is to provide a current-carrying rolling bearing having a stable current-carrying effect without the current-carrying seal being affected by grease.
本考案は、上記課題に鑑み提案されたもので、軸受内
に通電グリースを封入し、導電性を有する通電シールで
密封した通電用転がり軸受であって、 通電シールは、その基端部が外側軌道輪および内側軌
道輪のうち一方の軌道輪に支持され、その摺接部が他方
の軌道輪に摺接し、摺接部は、その先端部が二又状に分
かれて、軸受内に面した第１リップと、軸受外に面した
第２リップとを形成し、これら２つのリップの双方が上
記他方の軌道輪に摺接するものである。The present invention has been proposed in view of the above problems, and is a current-carrying rolling bearing in which a current-carrying grease is sealed in a bearing and sealed with a current-carrying seal having conductivity. The bearing is supported by one of the bearing ring and the inner bearing ring, and the sliding contact portion is in sliding contact with the other bearing ring, and the leading end of the sliding contact portion is bifurcated and faces the bearing. A first lip and a second lip facing the outside of the bearing are formed, and both of these two lips are in sliding contact with the other bearing ring.
上記２つのリップの内、第１リップは一方の軌道輪に
摺接して軸受内部に封入されたグリースを封止すると共
に、外輪と内輪間の通電を行なう。第２リップは、上記
一方の軌道輪に第１リップより外側で摺接して、グリー
スによる影響を受けずに外輪と内輪間の通電を行なうと
共に、外部からの異物侵入を防止する。Of the two lips, the first lip is in sliding contact with one of the bearing rings to seal the grease filled in the bearing and to conduct electricity between the outer ring and the inner ring. The second lip is in sliding contact with the one raceway ring outside the first lip, and energizes the outer ring and the inner ring without being affected by grease and prevents foreign matter from entering from the outside.
以下、本考案の実施例を図面にもとづいて説明する。 An embodiment of the present invention will be described below with reference to the drawings.
第１図は、本考案に係る通電用転がり軸受の第１の実
施例を示した断面図である。同図で、（11）は通電用転
がり軸受（Ｇ）の外輪、（12）は内輪であり、それぞれ
の対向面には凹溝（18）（18）、および、傾斜面（1
6）、（17）を有する凹溝（19）（19）が形成されてい
る。（１）（１）は軸受（Ｇ）の軸方向両側に配置され
た導電性を有する通電シールであり、その基端部（２）
は外輪（11）に形成された上記凹溝（18）によって保持
され、摺接部（４）は、後述するように、内輪（12）に
形成された上記凹溝（19）のＡ部およびＢ部に摺接する
ことによって、外輪（11）と内輪（12）を電気的に導通
する。FIG. 1 is a sectional view showing a first embodiment of a rolling bearing for current application according to the present invention. In the figure, (11) is an outer ring of the rolling bearing (G) for energization, (12) is an inner ring, and concave grooves (18) and (18) and an inclined surface (1
Concave grooves (19) and (19) having 6) and (17) are formed. (1) (1) is a conductive current-carrying seal disposed on both sides of the bearing (G) in the axial direction, and has a base end portion (2).
Is held by the groove (18) formed in the outer ring (11), and the sliding contact portion (4) has a portion A of the groove (19) formed in the inner ring (12) and The outer ring (11) and the inner ring (12) are electrically connected by slidingly contacting the B portion.
（14）は保持器であり、該保持器（14）によって転動
体（13）が回転自在に案内保持される。そして、軸受内
には、通電グリースが封入されている。(14) is a retainer, and the rolling retainer (13) is rotatably guided and retained by the retainer (14). The bearing grease is filled with a conductive grease.
第２図は、上記通電シール（１）の断面形状を示した
図である。同図で、通電シール（１）は、Ｌ字型断面の
補強金属板（７）を芯にして、それを覆うように導電性
ゴムで形成されたものであり、その一端に形成された基
端部（２）、上記基端部（２）から連続する側縁部
（３）、および、上記側縁部（３）から適宜の傾斜面
（８）で連続する摺接部（４）で構成される。また、上
記摺接部（４）の先端は二又状に別れて、第１リップ
（９）および第２リップ（10）を形成し、傾斜面（８）
側に第１リップ（９）、第１リップ（９）の先端部およ
び側縁部（３）からそれぞれ適宜のアール（R1）、
（R2）をもって隆起された第２リップ（10）がそれぞれ
形成される。FIG. 2 is a view showing a cross-sectional shape of the energizing seal (1). In the figure, the current-carrying seal (1) is formed of a conductive rubber so as to cover the reinforcing metal plate (7) having an L-shaped cross section as a core, and the base formed at one end thereof. The end portion (2), the side edge portion (3) continuous from the base end portion (2), and the sliding contact portion (4) continuous from the side edge portion (3) with an appropriate inclined surface (8). Composed. Further, the tip of the sliding contact portion (4) is divided into a bifurcated shape to form a first lip (9) and a second lip (10), and an inclined surface (8).
From the first lip (9) to the side, from the tip of the first lip (9) and from the side edge (3), respectively, an appropriate radius (R 1 ),
The raised second lips (10) are respectively formed with (R 2 ).
第３図は、上記摺接部（４）と内輪（12）の摺接状態
を示した図である。第１リップ（９）は内輪（12）に形
成された凹溝（19）の傾斜面（16）上のＡ部に摺接し、
軸受（Ｇ）内に封入されたグリースの流出を封止すると
共に、外輪（図示せず）と内輪（12）を電気的に導通す
る。第２リップ（10）は上記凹溝（19）の傾斜面（17）
上のＢ部に摺接し、外輪（図示せず）と内輪（12）を電
気的に導通すると共に、外部からの異物侵入を防止す
る。FIG. 3 is a view showing a sliding contact state between the sliding contact portion (4) and the inner ring (12). The first lip (9) is in sliding contact with the portion A on the inclined surface (16) of the concave groove (19) formed in the inner ring (12),
It seals outflow of the grease filled in the bearing (G) and electrically connects the outer ring (not shown) and the inner ring (12). The second lip (10) is the inclined surface (17) of the groove (19).
The outer ring (not shown) and the inner ring (12) are electrically connected to each other by sliding contact with the upper portion B, and foreign matter is prevented from entering from the outside.
尚、上記Ａ部およびＢ部での摺接は、第１リップ
（９）、第２リップ（10）の先端を、ゴム弾性を使用し
て、傾斜面（16）、（17）に押圧することによって行な
う。In the sliding contact at the portions A and B, the tips of the first lip (9) and the second lip (10) are pressed against the inclined surfaces (16) and (17) by using rubber elasticity. By doing.
従って、第２リップ（10）はグリースの影響を直接受
けずに、内輪（12）に摺接させるとができる。Therefore, the second lip (10) can be brought into sliding contact with the inner ring (12) without being directly affected by the grease.
第４図は、本考案に係る通電用転がり軸受の第２の実
施例を示した図である。簡単のため、構造が異なる摺接
部のみ図示し、省略した部分は第１の実施例と同一構造
とする。また、同一箇所は同一符号で表示する。同図に
おいて、第１リップ（９）の先端部は第１の実施例と同
様、凹溝（19）の傾斜面（16）上のＡ部に摺接するが、
第２リップ（10）は上記凹溝（19）の傾斜面（17）より
外側の平面（22）上のＣ部に摺接する。FIG. 4 is a view showing a second embodiment of the current-carrying rolling bearing according to the present invention. For simplification, only the sliding contact parts having different structures are shown, and the omitted parts have the same structure as the first embodiment. In addition, the same portions are indicated by the same symbols. In the figure, the tip portion of the first lip (9) is in sliding contact with the portion A on the inclined surface (16) of the concave groove (19) as in the first embodiment.
The second lip (10) is in sliding contact with the C portion on the plane (22) outside the inclined surface (17) of the concave groove (19).
第１の実施例では、万一、Ａ部からグリースがもれ
て、凹溝（19）に溜った場合、傾斜面（17）上のＢ部に
グリースが侵入し油膜を形成するため、第２リップ（1
0）による通電が不十分になる恐れがある。しかし、上
記（Ｃ）部は傾斜面（17）より外側の平面（22）上にあ
るため、上述のような場合でも、グリースの侵入がな
く、第２リップ（10）によるより確実な通電効果が期待
できる。In the first embodiment, if grease leaks from the A portion and collects in the groove (19), the grease penetrates into the B portion on the inclined surface (17) to form an oil film. 2 lips (1
The energization by 0) may become insufficient. However, since the (C) portion is on the flat surface (22) outside the inclined surface (17), even in the above-mentioned case, the grease does not enter and the second lip (10) provides a more reliable energizing effect. Can be expected.
尚、第１および第２の実施例においてグリースを軸受
（Ｇ）内に封入する場合、軸受（Ｇ）の左右いづれか一
方から封入すると、封入方向と反対側の通電シールがグ
リースの影響を受けにくく、好ましい。When the grease is sealed in the bearing (G) in the first and second embodiments, if the grease is sealed from either the left or right side of the bearing (G), the current-carrying seal on the side opposite to the sealing direction is less likely to be affected by the grease. ,preferable.
以上説明したように、本考案に係る通電用転がり軸受
は、導電性を有する通電シールの摺接部に第１リップお
よび第２リップを形成し、それぞれのリップを一方の軌
道輪に摺接させることによって、外輪と内輪を電気的に
導通させたものである。そのため、第２リップはグリー
スの影響を受けずに通電を行なうことができ、従来問題
とされていた、グリースの油膜形成による通電性の低
下、あるいは、消失といった問題点が解決され、より確
実な通電効果が期待できる。また、本考案に係わる通電
用転がり軸受は、通電シールと通電グリースとを併用し
た構成であるため、上記のような通電シールの通電効果
と相俟って、きわめて優れた通電性を有する。As described above, in the current-carrying rolling bearing according to the present invention, the first lip and the second lip are formed in the sliding contact portion of the electrically conductive seal, and the respective lips are brought into sliding contact with one bearing ring. Thus, the outer ring and the inner ring are electrically connected. Therefore, the second lip can be energized without being affected by the grease, and the problem that the electric conductivity is reduced or disappeared due to the formation of an oil film of the grease, which has been a problem in the past, is solved, and the second lip is more reliable. An energizing effect can be expected. Further, since the current-carrying rolling bearing according to the present invention has a structure in which a current-carrying seal and a current-carrying grease are used together, it has an extremely excellent current-carrying property in combination with the above-mentioned current-carrying effect of the current-carrying seal.
さらに、本考案者らは、本考案に係る通電用転がり軸
受の通電効果を確かめるために、試験を行った。その試
験結果を第５図に示す。同図は、縦軸に通電用転がり軸
受の電気抵抗値（Ω）、横軸に運転時間（Hr）をとり、
上記抵抗値（Ω）の経時的変化を測定した結果を示した
図である。同図で、（ａ）は本考案に係る通電用転がり
軸受を使用した場合、（ｂ）は前述した、通電シールの
片側の第１リップのみ摺接させた従来の通電用転がり軸
受を使用した場合の結果を示したものであり、いづれも
グリースとして通電グリースが封入されている。また、
（Ｃ）は、導電性をもたないシールを使用し、通電グリ
ースのみ封入された従来の通電用転がり軸受を使用した
場合の結果を示したものである。同図で明らかなよう
に、（ａ）、（ｂ）、（ｃ）いづれの場合も、抵抗値
（Ω）は、時間（T1）付辺まではほぼ直線的に増大し初
期状態を示すが、時間（T2）付辺からは、ほぼ一定値を
示し、定常状態に入っていることがわかる。そして、本
考案に係る通電用転がり軸受を使用した場合の（ａ）
は、（ｂ）、（ｃ）に比べ常にその抵抗値（Ω）が小さ
く、良好な通電性を示す。Furthermore, the present inventors conducted a test to confirm the energization effect of the energizing rolling bearing according to the present invention. The test results are shown in FIG. In this figure, the vertical axis represents the electric resistance value (Ω) of the rolling bearing for energization, and the horizontal axis represents the operating time (Hr).
It is the figure which showed the result of having measured the time-dependent change of the said resistance value ((ohm)). In the figure, (a) shows the case of using the current-carrying rolling bearing according to the present invention, and (b) shows the case of using the conventional current-carrying rolling bearing in which only the first lip on one side of the current-carrying seal is in sliding contact. The results are shown in each case, in which conductive grease is filled as grease. Also,
(C) shows the result of using a conventional energizing rolling bearing in which a non-conductive seal is used and only energizing grease is enclosed. As is clear from the figure, in any of (a), (b), and (c), the resistance value (Ω) increases almost linearly until the side with time (T 1 ) and shows the initial state. However, from the side with time (T 2 ), it shows that the value is almost constant and that it is in a steady state. And (a) when the rolling bearing for electric current according to the present invention is used.
Has a smaller resistance value (Ω) than that of (b) and (c), and exhibits good conductivity.
上記の結果は、本考案に係る通電用転がり軸受が、初
期状態および定常状態においても、従来のものに比べ
て、良好な通電性を示し、通電効果そのものが、改善さ
れたことを示すものである。The above results show that the current-carrying rolling bearing according to the present invention exhibits better current-carrying property than the conventional one in the initial state and the steady state, and the current-carrying effect itself is improved. is there.
定常状態を過ぎると、前述したように、通電グリース
の酸化劣化、あるいは、油膜形成等によって（ｂ）、
（ｃ）の抵抗値（Ω）は急増すると思われ、通電効果の
差はさらに顕著になる。After the steady state, as described above, due to the oxidative deterioration of the current-carrying grease or the formation of an oil film (b),
It is considered that the resistance value (Ω) in (c) is sharply increased, and the difference in energization effect becomes more remarkable.
第１図は本考案に係る通電用転がり軸受の第１の実施例
を示した断面図、第２図は、上記実施例に使用する通電
シールの一断面形状を示した図、第３図は、上記通電シ
ールと内輪の摺接状態を示した図である。第４図は本考
案に係る通電用転がり軸受の第２の実施例における通電
シールと内輪の摺接状態を示した図である。 第５図は、本考案に係る通電用転がり軸受、および、従
来の通電用転がり軸受の電気抵抗値の経時的変化を比較
して示すグラフ、第６図は、従来の通電用転がり軸受に
おける通電シールと内輪の摺接状態を示した図である。 （Ｇ）……通電用転がり軸受、 （１）……通電シール （２）……基端部 （４）……摺接部 （９）……第１リップ （10）……第２リップ （11）……外側軌道輪 （12）……内側軌道輪 （13）……転動体FIG. 1 is a cross-sectional view showing a first embodiment of a current-carrying rolling bearing according to the present invention, FIG. 2 is a view showing one cross-sectional shape of a current-carrying seal used in the above-mentioned embodiment, and FIG. FIG. 4 is a diagram showing a sliding contact state between the energization seal and the inner ring. FIG. 4 is a diagram showing a sliding contact state of an energization seal and an inner ring in a second embodiment of the energization rolling bearing according to the present invention. FIG. 5 is a graph showing the changes over time in the electrical resistance values of the current-carrying rolling bearing according to the present invention and the conventional current-carrying rolling bearing, and FIG. 6 is a graph showing the current-carrying current in the conventional current-carrying rolling bearing. It is a figure showing a sliding contact state of a seal and an inner ring. (G) …… Rolling bearing for energization, (1) …… Energizing seal (2) …… Base end (4) …… Sliding contact part (9) …… First lip (10) …… Second lip ( 11) …… Outer race (12) …… Inner race (13) …… Rolling element
Claims (1)
有する通電シールで密封した通電用転がり軸受であっ
て、 上記通電シールは、その基端部が外側軌道輪および内側
軌道輪のうち一方の軌道輪に支持され、その摺接部が他
方の軌道輪に摺接し、 上記摺接部は、その先端部が二又状に分かれて、軸受内
に面した第１リップと、軸受外に面した第２リップとを
形成し、これら２つのリップの双方が上記他方の軌道輪
に摺接することを特徴とする通電用転がり軸受。Claims: 1. A rolling bearing for energization, wherein energizing grease is sealed in the bearing and sealed by an energizing seal having conductivity, wherein the energizing seal has a base end portion of an outer race ring and an inner race ring. The bearing is supported by one raceway, and the sliding contact portion is in sliding contact with the other raceway. The sliding contact portion has a tip portion split into two forks, and the first lip facing the inside of the bearing and the outside of the bearing. And a second lip facing the above, and both of these two lips are in sliding contact with the other bearing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989150695U JPH085370Y2 (en) | 1989-12-26 | 1989-12-26 | Rolling bearing for energization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1989150695U JPH085370Y2 (en) | 1989-12-26 | 1989-12-26 | Rolling bearing for energization |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0388018U JPH0388018U (en) | 1991-09-09 |
| JPH085370Y2 true JPH085370Y2 (en) | 1996-02-14 |
Family
ID=31697035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1989150695U Expired - Lifetime JPH085370Y2 (en) | 1989-12-26 | 1989-12-26 | Rolling bearing for energization |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH085370Y2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002021862A (en) * | 2000-07-03 | 2002-01-23 | Nsk Ltd | Rolling bearing device |
| JP4949193B2 (en) * | 2007-10-23 | 2012-06-06 | ティーオーエー株式会社 | Audio power amplifier |
| JP2024012722A (en) * | 2020-10-14 | 2024-01-31 | ミネベアミツミ株式会社 | rolling bearing |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4953141U (en) * | 1972-08-22 | 1974-05-10 | ||
| JPS5971361U (en) * | 1982-11-04 | 1984-05-15 | 株式会社リコー | bearing device |
| JPS59152218U (en) * | 1983-03-30 | 1984-10-12 | 光洋精工株式会社 | Rolling bearing device with separate inner and outer rings |
-
1989
- 1989-12-26 JP JP1989150695U patent/JPH085370Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0388018U (en) | 1991-09-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |