JP2010242853A - Seal mechanism in pillow type bearing - Google Patents

Seal mechanism in pillow type bearing Download PDF

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JP2010242853A
JP2010242853A JP2009091896A JP2009091896A JP2010242853A JP 2010242853 A JP2010242853 A JP 2010242853A JP 2009091896 A JP2009091896 A JP 2009091896A JP 2009091896 A JP2009091896 A JP 2009091896A JP 2010242853 A JP2010242853 A JP 2010242853A
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bearing
inner ring
peripheral surface
seal
shield plate
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Takashi Nishida
敬 西田
Hidekazu Fujii
秀和 藤井
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NIPPON PILLOW BLOCK CO Ltd
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NIPPON PILLOW BLOCK CO Ltd
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    • 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
    • F16C33/7859—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 further sealing element
    • F16C33/7863—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 further sealing element mounted to the inner race, e.g. a flinger to use centrifugal effect
    • 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
    • F16C33/7859—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 further sealing element
    • F16C33/7866—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 further sealing element with 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
    • 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

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

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seal mechanism of a pillow type bearing, which is low in torque, namely low in frictional resistance, thereby keeps rotating performance while having high dust resistance and waterproofing, and is filled with lubricant sufficiently and easily if necessary. <P>SOLUTION: The seal mechanism of pillow type bearing brings a lip section of each seal member 8, attached to both sides of inner circumferential surface of bearing outer ring 5, in contact with each shield plate 7 attached to both sides of peripheral surface of bearing inner ring 4. Each seal member 8 is projected outward so that it contact with a center lip section 8a contacting with the peripheral surface of the bearing inner ring 4, and with the inner side surface of each side shield member 7, and at least two pieces of side lip sections 8b are circumferentially arranged in locations near the inner ring and outer ring with a space. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、軸受の内で特にピロー型軸受におけるシール機構に関するものであり、低トルクで高い防塵性と防水性を有する構造であることを特徴とするものである。   The present invention relates to a seal mechanism particularly in a pillow-type bearing among the bearings, and is characterized by a structure having a low torque and a high dustproof and waterproof property.

転がり軸受ユニットは、軸受内部の潤滑剤が外部に漏れるのを防ぐと共に、外部から塵埃・水等が軸受内部に浸入するのを防止する構造を必要とする。そこで従来一般に、軸受外輪に取付けられたシール材と、軸受内輪の外周に取り付けられた鉄板シールド板とによってシールする構造になっている（例えば後記特許文献１ないし５参照）。   The rolling bearing unit requires a structure that prevents the lubricant inside the bearing from leaking to the outside and prevents dust, water, and the like from entering the bearing from the outside. Therefore, in general, a seal is provided by a seal member attached to the bearing outer ring and an iron plate shield plate attached to the outer periphery of the bearing inner ring (see, for example, Patent Documents 1 to 5 below).

しかしピロー型軸受は、軸のたわみや芯（心）違い等によって生じる軸芯の狂いを自動的に調整する構造である。上記に似たようなタイプやそれに改良を加えたタイプのものものもあるが（例えば後記特許文献６ないし７参照）、一般的な転がり軸受ユニット以上にシール構造が重要となる。そのため、例えば図３で示す如く、軸受外輪５に取り付けるシール部６のシール材８の形状を、軸受内輪４の外周面に当接するセンターリップ部８ａが３重に並んだ構造としたものが多い（図面符号は本願発明のものと一致させてある）。   However, the pillow-type bearing is a structure that automatically adjusts the shaft misalignment caused by shaft deflection, core (center) difference, and the like. There are types similar to the above and those with improvements (for example, see Patent Documents 6 to 7 described later), but a seal structure is more important than general rolling bearing units. Therefore, for example, as shown in FIG. 3, the shape of the seal material 8 of the seal portion 6 attached to the bearing outer ring 5 is often such that the center lip portions 8 a contacting the outer peripheral surface of the bearing inner ring 4 are arranged in a triple manner. (The reference numerals are the same as those in the present invention).

特開２００３−１８４８９７JP 2003-184897 A 特開２００３−２６２２３１JP 2003-262231 A 特開２００４−１３２５１９JP 2004-132519 A 特開２００５−２９１４５０JP-A-2005-291450 特開２００６−３４２８７１JP 2006-328771 特開平９−２５０」４９JP-A-9-250 "49 米抄５９０８２４８US 5590248

ところが、上記引用文献１ないし５で示した一般軸受用のシール構造は、ピロー型軸受用のシール構造としては不十分で、それをピロー型軸受用のシール構造として用いた場合は、調芯時やその後にシールが不十分となって、軸受外部からの水や塵埃の浸入があったり、軸受内部から潤滑剤が漏れだすこともあった。   However, the seal structure for a general bearing shown in the above cited references 1 to 5 is insufficient as a seal structure for a pillow-type bearing, and when it is used as a seal structure for a pillow-type bearing, After that, the seal became insufficient, water or dust could enter from the outside of the bearing, and the lubricant might leak from the inside of the bearing.

またピロー型軸受用として上記特許文献６ないし７で示したものは、必ずしも十分なシール機能を果たすとは思えないもの（例えば上記引用文献６で示したもの）もあるし、シール機能は十分であったとしても、シール部の構造をかなり変更する必要があった（引用文献７に記載のもの）。   In addition, the ones shown in the above-mentioned Patent Documents 6 to 7 for pillow type bearings may not always have a sufficient sealing function (for example, the one shown in the above cited Reference 6), and the sealing function is sufficient. Even if there was, it was necessary to change the structure of the seal part considerably (the one described in the cited document 7).

また図３で示したものは、各シールリップ部８ａが３重に並んだ状態で、内輪４の外周面に当接する構造であるため、その各リップ部８ａの長さに制限が生じてしまい、シール効果を上げるには、内輪４の外周面に対してリップ部８ａの当接圧を高くする必要があった。それゆえ、摩擦抵抗が大きくなって、高速回転させると発熱が大きくなり、回転性能に悪影響を及ぼしたりしていた。   In addition, the structure shown in FIG. 3 has a structure in which the seal lip portions 8a are in contact with the outer peripheral surface of the inner ring 4 in a state where the seal lip portions 8a are arranged in a triple, so that the length of each lip portion 8a is limited. In order to increase the sealing effect, it is necessary to increase the contact pressure of the lip portion 8a with respect to the outer peripheral surface of the inner ring 4. Therefore, the frictional resistance increases, and heat generation increases when rotating at high speed, which adversely affects the rotation performance.

またこの３重に並んだ各リップ部８ａ間ではその間隔が狭くなるから、浸入した異物を確保できる容積が小さいし、各リップ部８ａ間の空所に潤滑剤を充分に充填することができなかった。さらに、新しい潤滑油の補給時に古い潤滑剤を排出するのに、このリップ部の構造では高圧で新しい潤滑油を補給が必要がある、等の問題点もあった。   In addition, since the interval between the lip portions 8a arranged in three layers is narrow, the volume capable of securing the infiltrated foreign matter is small, and the space between the lip portions 8a can be sufficiently filled with the lubricant. There wasn't. Furthermore, in order to discharge the old lubricant when replenishing new lubricant, the structure of the lip portion has a problem that it is necessary to replenish new lubricant at high pressure.

本発明は、特にピロー型軸受のシール構造として、上記従来のものがもつ問題点を解消しようとするものである。即ち本発明の目的は、高い防塵性と防水性を有しながら、低トルク即ち摩擦抵抗が小さく回転性能に影響を及ぼず、かつ必要なら潤滑剤を充分に充填できるような、ピロー型軸受のシール構造を提供することにある。   The present invention intends to solve the above-described problems of the conventional structure particularly as a seal structure for a pillow type bearing. That is, an object of the present invention is a pillow-type bearing that has high dustproofness and waterproofness, low torque, that is, low frictional resistance, does not affect rotational performance, and can be sufficiently filled with a lubricant if necessary. It is to provide a sealing structure.

本発明に係るピロー型軸受のシール構造は、
ピロー型軸受で、軸受内輪４の外周面の両側に取付けた各シールド板７に、軸受外輪５の内周面の両側に取付けた各シール材８のリップ部を当接させるシール構造において、
上記各シール材８を、軸受内輪４の外周面に当接するセンターリップ部８ａと、それ以外に、各側のシールド板７の内側面に当接可能に外側方へ突出する如く、少なくとも２枚のサイドリップ部８ｂを、内輪寄りと外輪寄りとに間隔をあけて周設した構成としたものである。 The seal structure of the pillow type bearing according to the present invention is:
In a seal structure in which a lip portion of each sealing material 8 attached to both sides of the inner peripheral surface of the bearing outer ring 5 is brought into contact with each shield plate 7 attached to both sides of the outer peripheral surface of the bearing inner ring 4 in a pillow type bearing,
At least two pieces of the sealing material 8 so as to protrude outwardly so as to be able to contact the inner side surface of the shield plate 7 on each side, in addition to the center lip portion 8a that contacts the outer peripheral surface of the bearing inner ring 4. The side lip portion 8b is provided around the inner ring and the outer ring with a space therebetween.

上記構成において、少なくとも２個のサイドリップ部８ｂとシールド板７とで形成される空所１０には、潤滑剤を充填しておくことが望ましい。なお、周設とは周方向に連続形成することを意味する。   In the above configuration, it is desirable to fill the space 10 formed by the at least two side lip portions 8b and the shield plate 7 with a lubricant. Note that the circumferential arrangement means continuous formation in the circumferential direction.

本発明でのシール材８のリップ部は上記の如く、軸受内輪４の外周面へ当接するセンターリップ部８ａと、それ以外にも、内輪４上で転動体３を間にして取り付けた両側のシールド板７の内側面へ各々当接可能に、各シール材８の外側面から側方へ突出する如く、少なくとも２枚のサイドリップ部８ｂを、間隔をあけて一体成形してある。   As described above, the lip portion of the seal material 8 according to the present invention includes the center lip portion 8a that contacts the outer peripheral surface of the bearing inner ring 4 and, on the other hand, both sides of the inner ring 4 attached with the rolling elements 3 therebetween. At least two side lip portions 8b are integrally formed at intervals so as to protrude laterally from the outer surface of each sealing material 8 so as to be capable of abutting against the inner surface of the shield plate 7, respectively.

そのため、イ）本発明のシール構造は、内輪４の外周面との間、および両側の各シールド板７の内側面の少なくとも２か所の間で、各々当接してシールすることになるから、高いシール効果を発揮することができ、防塵・防水機能の高いものになる。   Therefore, a) the seal structure of the present invention is in contact with and sealed between the outer peripheral surface of the inner ring 4 and at least two locations on the inner surface of each shield plate 7 on both sides. A high sealing effect can be exhibited, and the dustproof and waterproof function is high.

ロ）各シール材８には、少なくとも２枚サイドリップ部８ｂを、シール材８の内周寄りと外周寄りとに間隔をあけて周設してあることで、各側のシールド板７と両サイドリップ部８ｂとの間の空所１０を大きくとれる。そのため、外部から浸入しようとする水・塵埃等の異物を、その空所１０内に確保・貯蔵できるから、水・塵埃等の異物がそれ以上軸受内部へ浸入することを防止できる効果も大きい。     B) Each sealing material 8 is provided with at least two side lip portions 8b at intervals between the inner periphery and the outer periphery of the sealing material 8, so that the shield plate 7 on both sides and both The space 10 between the side lip portion 8b can be made large. For this reason, foreign matter such as water and dust to be infiltrated from the outside can be secured and stored in the void 10, so that the effect of further preventing foreign matter such as water and dust from entering the inside of the bearing is great.

ハ）各サイドリップ部８ｂは、必要な長さを確保し易い構造であるから、外側方のシールド板７の内側面に対して傾斜した状態で当接させることができるし、上記ロ）の記載以外の理由からも各充分な容積の空所１０をとれる。     C) Since each side lip portion 8b has a structure that easily secures a necessary length, it can be brought into contact with the inner side surface of the outer shield plate 7 in an inclined state. For reasons other than those described above, the spaces 10 having sufficient volumes can be taken.

即ち、ピロー型軸受の内輪４は、その構造上から一般の軸受の内輪に比べて軸方向に長めになっている。そのため、シール材８に対するシールド板７の取り付け位置を、両者間の間隔を長めに設定することができるようになる。これにより、各サイドリップ部８ｂは側方への長さを確保し易いし、またシールド板７内側面に対して斜め状に当接させることがてきる。したがって、各サイドリップ部８ｂとシールド板７との当接圧を低く設定することも可能となり、摩擦抵抗を小さくできて回転性能に影響を及ぼすことを無くすことができる。   That is, the inner ring 4 of the pillow type bearing is longer in the axial direction than the inner ring of a general bearing because of its structure. Therefore, the attachment position of the shield plate 7 with respect to the sealing material 8 can be set with a long interval between them. Thereby, each side lip portion 8b can easily secure a lateral length, and can be brought into contact with the inner surface of the shield plate 7 in an oblique manner. Therefore, the contact pressure between each side lip portion 8b and the shield plate 7 can be set low, and the frictional resistance can be reduced, thereby preventing the rotational performance from being affected.

ニ）さらに上記の如く、両側の各シールド板７は一般の軸受に比べて軸方向へ長めの内輪４上に套合固定するものであるから、予め軸方向への位置を調節して取付け可能となっている。そのため、各シールド板７の取り付け位置の設定により、サイドリップ部８ｂとの間の当接圧を、例えばユーザーの注文等に応じて最適状態にして組み立てることができる。     D) Further, as described above, since the shield plates 7 on both sides are fixed on the inner ring 4 which is longer in the axial direction than a general bearing, it can be mounted by adjusting the position in the axial direction in advance. It has become. Therefore, by setting the mounting position of each shield plate 7, the contact pressure with the side lip portion 8b can be assembled in an optimum state according to, for example, a user order.

ホ）シール材８に少なくとも２枚のサイドリップ部８ｂを周設して、シールド板７に当接させるようにしたので、その間の空所１０が広くなっており、充分な量の潤滑剤が充填可能となっているし、新しい潤滑剤の補給時に古い潤滑剤の排出を従来のような高圧によらずともできるようになる。     E) Since at least two side lip portions 8b are provided around the sealing material 8 so as to contact the shield plate 7, the space 10 therebetween is widened, and a sufficient amount of lubricant is provided. It can be filled, and when a new lubricant is replenished, the old lubricant can be discharged without using a conventional high pressure.

本発明に係るピロー型軸受ユニットのシール構造を示す縦断正面図である。It is a vertical front view which shows the seal structure of the pillow-type bearing unit which concerns on this invention. 図１で示したものの一部拡大縦断正面図である。FIG. 2 is a partially enlarged longitudinal front view of what is shown in FIG. 1. 従来のピロー型軸受ユニットのシール構造の一部を示す縦断正面図である。It is a vertical front view which shows a part of seal structure of the conventional pillow type bearing unit.

本発明は、高い防塵性と防水性を有しながら、低トルク即ち摩擦抵抗が小さく回転性能に影響を及ぼさず、かつ必要なら潤滑剤を充分に充填できるようにしようとする目的を、シール材８のリップ部を、軸受内輪４の外周面に当接するセンターリップ部８ａの外に、上記鉄板シールド板７の内側面に当接する如く、少なくとも２枚のサイドリップ部８ｂを、それらを間隔をあけて周設することで実現した。   An object of the present invention is to provide a sealing material which has a high dustproof and waterproof property, has a low torque, that is, a low frictional resistance, does not affect the rotation performance, and can be sufficiently filled with a lubricant if necessary. At least two side lip portions 8b are spaced apart from each other so that the lip portion 8 is in contact with the inner surface of the iron plate shield plate 7 outside the center lip portion 8a that is in contact with the outer peripheral surface of the bearing inner ring 4. This was realized by opening it around.

図１及び図２は、回転軸１を可回転に軸支するピロー型軸受ユニットの一部であり、中央部の短円筒状の軸受箱２内に、軸受外輪５と、軸受内輪４と、その間に保持器で保持された転動体３と、その両側にシール部６とが設けてある。   1 and 2 show a part of a pillow-type bearing unit that rotatably supports the rotary shaft 1, and a bearing outer ring 5, a bearing inner ring 4, In the meantime, the rolling element 3 held by the cage and the seal portions 6 are provided on both sides thereof.

上記軸受内輪４は、この軸受ユットがピロー型のものであるから、他の一般的な軸受に比べて軸方向に少し長めに形成されている。該内輪４の両側外周には、孔付きシールド板（スリンガともいう）７を各々套合固定される。該シールド板７は、ここでは亜鉛メッキ処理鋼板製としてある。   Since the bearing inner ring 4 is a pillow type, the bearing inner ring 4 is formed slightly longer in the axial direction than other general bearings. A shield plate with a hole (also referred to as a slinger) 7 is fixed to the outer circumferences on both sides of the inner ring 4. Here, the shield plate 7 is made of a galvanized steel plate.

上記軸受外輪５は、その外周面を軸受箱２の内周面との間で調芯可能に曲面に形成してあり、転動体３を間にして両側の内周面に、孔付き円盤状でゴム製のシール材８を嵌合して固定してある。   The outer peripheral surface of the bearing 5 is formed into a curved surface so that the outer peripheral surface can be aligned with the inner peripheral surface of the bearing housing 2, and a disc with a hole is formed on the inner peripheral surfaces on both sides with the rolling elements 3 therebetween. The rubber sealing material 8 is fitted and fixed.

該シール材８は、その外周縁を上記軸受外輪５の内周面に嵌合固定してあり、内周縁には軸受内輪４の外周面に当接用のセンターリップ部８ａを有するが、それとは別にサイドリップ部８ｂをも一体成形したものである。   The sealing material 8 has an outer peripheral edge fitted and fixed to the inner peripheral surface of the bearing outer ring 5, and the inner peripheral edge has a center lip portion 8 a for contact with the outer peripheral surface of the bearing inner ring 4. In addition, the side lip portion 8b is also integrally formed.

即ち、該サイドリップ部８ｂは、転動体３とは反対の外側面に、シール材８の外側方へ突出する如くに周設したものであり、ここでは外周縁寄りと内周縁寄りとの二箇所に、上記シールド板７の内側面に当接可能に設けてある。図で、９はシール材８の補強用芯金を示し、シール材８の内側面に一体化して設けてある。   That is, the side lip portion 8b is provided on the outer surface opposite to the rolling element 3 so as to protrude outward of the sealing material 8. Here, the side lip portion 8b has two outer lip and inner rim portions. It is provided at a location so as to be able to contact the inner surface of the shield plate 7. In the figure, reference numeral 9 denotes a reinforcing metal core for the sealing material 8, which is integrally provided on the inner surface of the sealing material 8.

両側のシールド板７とシール材８との軸方向への位置関係は、シールド板７の内側面にシール材８のサイドリップ部８ｂが当接するように設けておくものである。この場合にピロー型軸受ユニットでの内輪４が、一般の軸受ユニットのものよりも軸方向へ長めに形成されているので、シールド板７を内輪４上で軸方向への位置を調節して取付けることが可能である。   The positional relationship in the axial direction between the shield plates 7 and the seal material 8 on both sides is provided so that the side lip portion 8b of the seal material 8 abuts against the inner surface of the shield plate 7. In this case, the inner ring 4 in the pillow type bearing unit is formed to be longer in the axial direction than that in the general bearing unit, so that the shield plate 7 is attached on the inner ring 4 by adjusting the position in the axial direction. It is possible.

そのため、ユーザーの注文により、軸受ユニットの大きさその他の条件等を考慮して、予めサイドリップ部８ｂとの当接圧が最適なものになる位置に、シールド板７を取り付けて組み立てる。なお、シール材８の２箇所のサイドリップ部８ｂとシールド板７とで囲まれた空所１０に、潤滑剤を充填してある。１１は固定ネジを示し、回転軸１に内輪４を固定するものである。   Therefore, the shield plate 7 is attached and assembled in advance at a position where the contact pressure with the side lip portion 8b is optimum in consideration of the size of the bearing unit and other conditions according to the user's order. The space 10 surrounded by the two side lip portions 8b of the sealing material 8 and the shield plate 7 is filled with a lubricant. Reference numeral 11 denotes a fixing screw for fixing the inner ring 4 to the rotating shaft 1.

本発明は、一般的な軸受けではなくピロー型軸受において、高い防塵性と防水性を有しながら、低トルク即ち摩擦抵抗が小さく回転性能に影響を及ぼさず、また必要なら潤滑剤を充分にかつ容易に充填できるシール構造として好適なものである。   The present invention is not a general bearing but a pillow type bearing that has high dustproofness and waterproofness, and has low torque, that is, low frictional resistance and does not affect the rotational performance. It is suitable as a seal structure that can be easily filled.

１−回転軸
２−軸受箱
３−転動体
４−内輪
５−外輪
６−シール部
７−シールド板
８−シール材
８ａ−センターリップ部
８ｂ−サイドリップ部
９−補強用芯金
１０−空所
１１−固定ネジ DESCRIPTION OF SYMBOLS 1-Rotating shaft 2-Bearing box 3-Rolling element 4-Inner ring 5-Outer ring 6-Seal part 7-Shield plate 8-Seal material 8a-Center lip part 8b-Side lip part 9-Reinforcing core 10-Space 11-Fixing screw

Claims (2)

ピロー型軸受で、軸受内輪４の外周面の両側に取付けた各シールド板７に、軸受外輪５の内周面の両側に取付けた各シール材８のリップ部を当接させるシール構造において、
上記各シール材８を、軸受内輪４の外周面に当接するセンターリップ部８ａと、それ以外に、各側のシールド材７の内側面に当接可能に外側方へ突出する如く、少なくとも２枚のサイドリップ部８ｂを、内輪寄りと外輪寄りとに間隔をあけて周設した構成にしたことを特徴とする、ピロー型軸受のシール構造。 In a seal structure in which a lip portion of each sealing material 8 attached to both sides of the inner peripheral surface of the bearing outer ring 5 is brought into contact with each shield plate 7 attached to both sides of the outer peripheral surface of the bearing inner ring 4 in a pillow type bearing,
At least two pieces of the sealing material 8 so as to protrude outwardly so as to be able to contact the inner side surface of the shield material 7 on each side, in addition to the center lip portion 8a contacting the outer peripheral surface of the bearing inner ring 4 The pillow type bearing seal structure is characterized in that the side lip portion 8b is provided around the inner ring and the outer ring with a space therebetween. 少なくとも２枚のサイドリップ部８ｂとシールド板７の内側面とで形成される空所１０内に、潤滑剤を充填した、請求項１に記載のピロー型軸受のシール構造。 The seal structure for a pillow type bearing according to claim 1, wherein a lubricant is filled in a space 10 formed by at least two side lip portions 8b and an inner side surface of the shield plate 7.
JP2009091896A 2009-04-06 2009-04-06 Seal mechanism in pillow type bearing Pending JP2010242853A (en)

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN103573829A (en) * 2012-08-06 2014-02-12 通用汽车环球科技运作有限责任公司 Bearing with sealing slinger
CN112780664A (en) * 2021-02-03 2021-05-11 郎溪兴阳金属制品有限责任公司 High-sealing-performance dustproof bearing ring and preparation method thereof
CN117259590A (en) * 2023-11-22 2023-12-22 安徽大学 Riveting device for shock absorber guider and oil seal

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JPH09304231A (en) * 1996-05-21 1997-11-28 Ntn Corp Ring lateral hole detector
JP2003083290A (en) * 2001-09-12 2003-03-19 Uchiyama Mfg Corp Water pump bearing
JP2005076749A (en) * 2003-08-29 2005-03-24 Koyo Seiko Co Ltd Sealing device
JP2006046565A (en) * 2004-08-06 2006-02-16 Nsk Ltd Sealing device of rolling bearing, and hub unit

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JPS6135224U (en) * 1984-08-01 1986-03-04 三菱電機株式会社 Rolling bearing device
JPH09304231A (en) * 1996-05-21 1997-11-28 Ntn Corp Ring lateral hole detector
JP2003083290A (en) * 2001-09-12 2003-03-19 Uchiyama Mfg Corp Water pump bearing
JP2005076749A (en) * 2003-08-29 2005-03-24 Koyo Seiko Co Ltd Sealing device
JP2006046565A (en) * 2004-08-06 2006-02-16 Nsk Ltd Sealing device of rolling bearing, and hub unit

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103573829A (en) * 2012-08-06 2014-02-12 通用汽车环球科技运作有限责任公司 Bearing with sealing slinger
US8845201B2 (en) * 2012-08-06 2014-09-30 GM Global Technology Operations LLC Bearing with sealing slinger
CN103573829B (en) * 2012-08-06 2016-09-28 通用汽车环球科技运作有限责任公司 There is the bearing of Sealing shield ring
CN112780664A (en) * 2021-02-03 2021-05-11 郎溪兴阳金属制品有限责任公司 High-sealing-performance dustproof bearing ring and preparation method thereof
CN112780664B (en) * 2021-02-03 2024-03-15 郎溪兴阳金属制品有限责任公司 High-tightness dustproof bearing ring and preparation method thereof
CN117259590A (en) * 2023-11-22 2023-12-22 安徽大学 Riveting device for shock absorber guider and oil seal
CN117259590B (en) * 2023-11-22 2024-02-02 安徽大学 Riveting device for shock absorber guider and oil seal

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