[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

JP2006342827A - Sealing device - Google Patents

Sealing device Download PDF

Info

Publication number
JP2006342827A
JP2006342827A JP2005166729A JP2005166729A JP2006342827A JP 2006342827 A JP2006342827 A JP 2006342827A JP 2005166729 A JP2005166729 A JP 2005166729A JP 2005166729 A JP2005166729 A JP 2005166729A JP 2006342827 A JP2006342827 A JP 2006342827A
Authority
JP
Japan
Prior art keywords
outer peripheral
peripheral side
sealing member
metal ring
inner peripheral
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2005166729A
Other languages
Japanese (ja)
Inventor
Takeshi Kanzaki
剛 神前
Hiroki Matsui
宏樹 松井
Naoto Kobayashi
直人 小林
Satoshi Yamanaka
聡 山中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nok Corp
Original Assignee
Nok Corp
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 Nok Corp filed Critical Nok Corp
Priority to JP2005166729A priority Critical patent/JP2006342827A/en
Priority to PCT/JP2006/310296 priority patent/WO2006132083A1/en
Priority to CN2006800198923A priority patent/CN101189461B/en
Priority to US11/921,730 priority patent/US20090127796A1/en
Priority to KR1020077031040A priority patent/KR20080018920A/en
Priority to EP06746779A priority patent/EP1890061A1/en
Publication of JP2006342827A publication Critical patent/JP2006342827A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Sealing Of Bearings (AREA)
  • Sealing With Elastic Sealing Lips (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sealing device more improved in sealing ability by a labyrinth and capable of effectively restricting intrusion of dust such as muddy water, in regard to a sealing device 1 structured of combination of an inner peripheral side sealing member 2 fitted to an inner peripheral side fitting member as one of two members rotating in relation to each other and an outer peripheral side sealing member 3 fitted to an outer peripheral side fitting member as the other. <P>SOLUTION: An outer peripheral cylindrical part 4c is provided in an outer peripheral part of a metal ring 4 of the inner peripheral side sealing member 2, and a continuous long labyrinth spaces 8, 9 and 10 are provided between the outer peripheral surface of the outer peripheral cylindrical part 4c and the outer peripheral side sealing member 3, between a tip face of the outer peripheral cylindrical part 4c and the outer peripheral side sealing member 3 and between the inner peripheral surface of the outer peripheral cylindrical part 4c and the outer peripheral side sealing member 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、密封技術に係る密封装置に関するものである。本発明の密封装置は例えば、ハブベアリングシールとして自動車関連分野に用いられ、または汎用機械等に用いられる。   The present invention relates to a sealing device according to a sealing technique. The sealing device of the present invention is used, for example, in the field of automobiles as a hub bearing seal, or used in a general-purpose machine or the like.

従来から、図３に示すような密封装置５１が知られており、この密封装置５１は、相対回転する二部材（例えばベアリングの内輪および外輪）６１，６２のうちの一方である内周側取付部材（例えば内輪）６１に取り付けられるスリンガー部材５２と、他方である外周側取付部材（例えば外輪）６２に取り付けられるリップシール部材５３との組み合わせにより構成されている。   Conventionally, a sealing device 51 as shown in FIG. 3 is known, and this sealing device 51 is installed on the inner peripheral side which is one of two members 61 and 62 (for example, an inner ring and an outer ring of a bearing) that rotate relative to each other. A slinger member 52 attached to a member (for example, an inner ring) 61 and a lip seal member 53 attached to an outer peripheral side attachment member (for example, an outer ring) 62, which is the other, are configured.

スリンガー部材５２は、金属材よりなり、筒状部５２ａの軸方向一端に環状の径方向立ち上がり部５２ｂを一体成形して断面略Ｌ字形に形成され、筒状部５２ａをもって内周側取付部材（例えば内輪）６１の外周面に嵌着されている。リップシール部材５３は、同じく断面略Ｌ字形を呈する金属環５４にゴム状弾性体製のシールリップ５５を複数（図では３つのリップ）被着したものであって、金属環５４をもって外周側取付部材（例えば外輪）６２の内周面に嵌着されている。   The slinger member 52 is made of a metal material, and is formed into a substantially L-shaped cross section by integrally forming an annular radial rising portion 52b at one axial end of the tubular portion 52a. For example, the inner ring 61 is fitted on the outer peripheral surface. The lip seal member 53 is formed by attaching a plurality of rubber lip seal lips 55 (three lips in the figure) to a metal ring 54 having a substantially L-shaped cross section. A member (for example, outer ring) 62 is fitted on the inner peripheral surface.

また、スリンガー部材５２における径方向立ち上がり部５２ｂの先端（図上上端）は僅かな径方向間隙ｃを介してリップシール部材５３と対向しており、よってここに、外部Ａの泥水等のダストが密封装置５１の内部Ｂに侵入するのを抑えるためのラビリンスシール５６が設けられている。   Further, the distal end (upper end in the figure) of the radial rising portion 52b of the slinger member 52 is opposed to the lip seal member 53 with a slight radial gap c. A labyrinth seal 56 is provided to prevent entry into the interior B of the sealing device 51.

上記構成の密封装置５１は、上記したようにスリンガー部材５２における径方向立ち上がり部５２ｂの先端とこれに対向するリップシール部材５３との間に泥水等のダストの侵入を抑えるラビリンスシール５６が設けられているので、このラビリンスシール５６によるシール作用によってある程度の耐ダスト性を発揮することが可能とされているが、ラビリンスシール５６の軸方向長さが極端に短いことから、そのシール性能があまり高くない不都合がある。   As described above, the sealing device 51 having the above-described configuration is provided with the labyrinth seal 56 that suppresses the intrusion of dust such as muddy water between the distal end of the radial rising portion 52b of the slinger member 52 and the lip seal member 53 opposed thereto. Therefore, a certain amount of dust resistance can be exhibited by the sealing action of the labyrinth seal 56, but since the axial length of the labyrinth seal 56 is extremely short, its sealing performance is very high. There is no inconvenience.

また、従来、図４に示すように、スリンガー部材５２の外周部位に外周筒部５２ｃを一体成形してこの外周筒部５２ｃの外周面全長をラビリンス空間とすることより、ラビリンスシール５６の軸方向長さを大きく設定する技術が開発されているが、これとて依然として長さが不十分であることから、ラビリンスシール５６によるシール性能は未だ不十分である（特許文献１）。   Conventionally, as shown in FIG. 4, the outer peripheral cylindrical portion 52 c is integrally formed on the outer peripheral portion of the slinger member 52, and the entire outer peripheral surface of the outer peripheral cylindrical portion 52 c is used as a labyrinth space. A technique for setting the length large has been developed, but since the length is still insufficient, the sealing performance by the labyrinth seal 56 is still insufficient (Patent Document 1).

実開平３−５９５６２号公報Japanese Utility Model Publication No. 3-59562

本発明は以上の点に鑑み、上記従来技術と比較してラビリンスシールによるシール性能を一層高めることができ、もって泥水等のダストが浸入するのを極めて有効に抑えることができる密封装置を提供することを目的とする。   In view of the above points, the present invention provides a sealing device that can further enhance the sealing performance of the labyrinth seal as compared with the above-described conventional technology, and can extremely effectively suppress the intrusion of dust such as muddy water. For the purpose.

上記目的を達成するため、本発明の請求項１による密封装置は、相対回転する二部材のうちの一方である内周側取付部材に取り付けられる内周側密封部材と、前記二部材のうちの他方である外周側取付部材に取り付けられる外周側密封部材との組み合わせよりなる密封装置であって、前記内周側密封部材は、前記内周側取付部材に固定される金属環を有し、前記外周側密封部材は、前記外周側取付部材に固定される金属環と、前記金属環に被着されて前記内周側密封部材の金属環に摺動自在に密接するゴム状弾性体製のシールリップとを有する密封装置において、前記内周側密封部材の金属環における外周部位に外周筒部を設け、前記外周筒部の外周面と前記外周側密封部材との間、前記外周筒部の先端面と前記外周側密封部材との間および前記外周筒部の内周面と前記外周側密封部材との間に、一連のラビリンス空間を設けたことを特徴とするものである。   In order to achieve the above object, a sealing device according to claim 1 of the present invention includes an inner peripheral sealing member attached to an inner peripheral mounting member which is one of two relatively rotating members, and of the two members. A sealing device comprising a combination with an outer peripheral side sealing member attached to the outer peripheral side mounting member which is the other, wherein the inner peripheral side sealing member has a metal ring fixed to the inner peripheral side mounting member, The outer peripheral side sealing member includes a metal ring fixed to the outer peripheral side mounting member, and a rubber-made elastic seal attached to the metal ring and slidably in close contact with the metal ring of the inner peripheral side sealing member In the sealing device having a lip, an outer peripheral cylindrical portion is provided at an outer peripheral portion of the metal ring of the inner peripheral sealing member, and between the outer peripheral surface of the outer peripheral cylindrical portion and the outer peripheral sealing member, the tip of the outer peripheral cylindrical portion Between the surface and the outer peripheral sealing member and Between the inner peripheral surface of the Kigaishu tubular portion and the outer peripheral side sealing member and is characterized in that a series of labyrinth spaces.

また、本発明の請求項２による密封装置は、相対回転する二部材のうちの一方である内周側取付部材に取り付けられる内周側密封部材と、前記二部材のうちの他方である外周側取付部材に取り付けられる外周側密封部材との組み合わせよりなる密封装置であって、前記内周側密封部材は、前記内周側取付部材に固定される金属環を有し、前記外周側密封部材は、前記外周側取付部材に固定される金属環と、前記金属環に被着されて前記内周側密封部材の金属環に摺動自在に密接するゴム状弾性体製のシールリップとを有する密封装置において、前記内周側密封部材の金属環における外周部位に外周筒部を設け、前記外周筒部の外周面にその先端部から基端部へかけて漸次拡径する傾斜面を設けるとともに、対応する傾斜面を前記外周側密封部材に設け、前記傾斜面によってラビリンス空間を設けたことを特徴とするものである。   According to a second aspect of the present invention, there is provided a sealing device comprising: an inner peripheral side sealing member attached to an inner peripheral side mounting member that is one of two members that rotate relatively; and an outer peripheral side that is the other of the two members. A sealing device comprising a combination with an outer peripheral side sealing member attached to an attachment member, wherein the inner peripheral side sealing member has a metal ring fixed to the inner peripheral side mounting member, and the outer peripheral side sealing member is A seal having a metal ring fixed to the outer peripheral side mounting member, and a rubber-like elastic seal lip that is attached to the metal ring and slidably contacts the metal ring of the inner peripheral seal member In the apparatus, an outer peripheral cylindrical portion is provided in the outer peripheral portion of the metal ring of the inner peripheral sealing member, and an inclined surface that gradually increases in diameter from the distal end portion to the base end portion is provided on the outer peripheral surface of the outer peripheral cylindrical portion, The corresponding inclined surface is the outer peripheral sealing portion. The provided and is characterized in that a labyrinth space by said inclined surface.

上記構成を備えた本発明の請求項１による密封装置においては、内周側密封部材の金属環に設けられる外周筒部の外周側のみでなく、先端側および内周側にもそれぞれラビリンス空間が設けられることから、これらのラビリンス空間によるラビリンスシールの長さを従来よりも長く設定することが可能とされる。   In the sealing device according to the first aspect of the present invention having the above-described configuration, the labyrinth space is provided not only on the outer peripheral side of the outer peripheral cylindrical portion provided on the metal ring of the inner peripheral side sealing member, but also on the distal end side and the inner peripheral side. Since it is provided, it is possible to set the length of the labyrinth seal by these labyrinth spaces longer than before.

また、上記構成を備えた本発明の請求項２による密封装置においては、外周筒部の外周側に設定されるラビリンス空間が軸方向にストレートな形状ではなく、傾斜面状（テーパー状または円錐面状）に形成されることから、密封装置の回転時、遠心力の作用によるシール機能（泥水押し戻し作用）を発揮することが可能とされる。   Moreover, in the sealing device according to claim 2 of the present invention having the above-described configuration, the labyrinth space set on the outer peripheral side of the outer peripheral cylindrical portion is not a straight shape in the axial direction, but an inclined surface (tapered or conical surface) Therefore, when the sealing device is rotated, it is possible to exhibit a sealing function (muddy water pushing back action) by the action of centrifugal force.

本発明は、以下の効果を奏する。   The present invention has the following effects.

すなわち、本発明の請求項１による密封装置においては、内周側密封部材の金属環に設けられる外周筒部の外周面と外周側密封部材との間、外周筒部の先端面と外周側密封部材との間および外周筒部の内周面と外周側密封部材との間に一連のラビリンス空間が設けられることから、これら複数のラビリンス空間によるラビリンスシールの長さが従来よりも長く設定されている。したがってこれに伴って、ラビリンスによるシール性能を一層高めることができ、泥水等のダストが浸入するのを有効に抑えることができる。   That is, in the sealing device according to claim 1 of the present invention, between the outer peripheral surface of the outer peripheral cylindrical portion provided on the metal ring of the inner peripheral sealing member and the outer peripheral sealing member, the front end surface of the outer peripheral cylindrical portion and the outer peripheral seal. Since a series of labyrinth spaces are provided between the members and between the inner peripheral surface of the outer peripheral cylindrical portion and the outer peripheral side sealing member, the length of the labyrinth seal by the plurality of labyrinth spaces is set longer than before. Yes. Accordingly, along with this, the sealing performance by the labyrinth can be further enhanced, and the intrusion of dust such as muddy water can be effectively suppressed.

また、本発明の請求項２による密封装置においては、内周側密封部材の金属環に設けられる外周筒部にその先端部から基端部へかけて漸次拡径する傾斜面が設けられるとともに外周側密封部材に対応する傾斜面が設けられ、この両傾斜面によって傾斜面状のラビリンス空間が設けられることから、この傾斜面状のラビリンス空間は、ラビリンスシール作用のほかに、遠心力を利用するシール作用を発揮する。したがって、ラビリンスによるシール性能を一層高めることができ、泥水等のダストが浸入するのを有効に抑えることができる。   In the sealing device according to claim 2 of the present invention, the outer peripheral cylindrical portion provided in the metal ring of the inner peripheral side sealing member is provided with an inclined surface that gradually increases in diameter from the distal end portion to the proximal end portion, and the outer peripheral portion. Since the inclined surface corresponding to the side sealing member is provided, and the inclined surface-like labyrinth space is provided by both inclined surfaces, this inclined-surface-like labyrinth space uses centrifugal force in addition to the labyrinth sealing action. Demonstrates sealing action. Therefore, the sealing performance by the labyrinth can be further enhanced, and infiltration of dust such as muddy water can be effectively suppressed.

つぎに本発明の実施例を図面にしたがって説明する。   Next, embodiments of the present invention will be described with reference to the drawings.

第一実施例・・・
図１は、本発明の第一実施例に係る密封装置１の要部断面を示している。当該実施例に係る密封装置１は、自動車関連分野においてハブベアリング用シール（ハブシール）として用いられるものであって、以下のように構成されている。尚、当該実施例は本願の請求項１に係る発明についての実施例である。 First embodiment ...
FIG. 1 shows a cross section of a main part of a sealing device 1 according to a first embodiment of the present invention. The sealing device 1 according to this embodiment is used as a hub bearing seal (hub seal) in the field of automobiles and is configured as follows. In addition, the said Example is an Example regarding the invention which concerns on Claim 1 of this application.

すなわち先ず、当該密封装置１は、相対回転する二部材のうちの一方の部材であるベアリング内輪（内周側取付部材、図示せず）に取り付けられてベアリング内輪とともに回転する内周側密封部材２と、二部材のうちの他方の部材であるベアリング外輪（外周側取付部材、図示せず）に取り付けられて非回転の外周側密封部材３とを有している。   That is, first, the sealing device 1 is attached to a bearing inner ring (an inner peripheral side mounting member, not shown), which is one of two members that rotate relative to each other, and rotates together with the bearing inner ring. And a non-rotating outer peripheral side sealing member 3 attached to a bearing outer ring (an outer peripheral side mounting member, not shown) which is the other of the two members.

内周側密封部材２は、金属環の一種であるスリンガー部材（以下、単にスリンガーとも称する）４によって構成されている。   The inner peripheral side sealing member 2 is constituted by a slinger member (hereinafter also simply referred to as a slinger) 4 which is a kind of metal ring.

このスリンガー４は、板金等の金属材よりなり、筒状部４ａの軸方向一方（図上右方）の端部に径方向外方（図上上方）へ向けて環状の径方向立ち上がり部（平面部）４ｂを一体成形したものであって、前者の筒状部４ａをもってベアリング内輪の外周面に嵌着される。   The slinger 4 is made of a metal material such as a sheet metal, and has an annular radial rising portion (on the upper side in the drawing) toward the radially outer side (upward in the drawing) at one end (right side in the drawing) of the cylindrical portion 4a. The flat portion 4b is integrally formed, and the former cylindrical portion 4a is fitted to the outer peripheral surface of the bearing inner ring.

一方、外周側密封部材３は、リップシール部材（以下、単にリップシールとも称する）５によって構成されており、このリップシール５は、金属環６と、この金属環６に被着（加硫接着）されたゴム状弾性体７との組み合わせにより構成されている。   On the other hand, the outer peripheral side sealing member 3 is constituted by a lip seal member (hereinafter also simply referred to as a lip seal) 5, which is attached to the metal ring 6 and the metal ring 6 (vulcanized adhesion). The rubber-like elastic body 7 is combined.

金属環６は、板金等の金属材よりなり、筒状部６ａの軸方向他方（図上左方）の端部に径方向内方（図上下方）へ向けて環状の径方向立ち上がり部（平面部）６ｂを一体成形したものであって、前者の筒状部６ａをもってベアリング外輪の内周面に嵌着される。   The metal ring 6 is made of a metal material such as sheet metal, and has an annular radial rising portion (inward in the drawing) toward the radially inner side (downward in the drawing) at the other axial end (left in the drawing) of the cylindrical portion 6a. The flat portion 6b is integrally formed, and the former cylindrical portion 6a is fitted to the inner peripheral surface of the bearing outer ring.

ゴム状弾性体７は、金属環６の筒状部６ａの先端外周面に被着された外周ゴム部７ａと、筒状部６ａの先端面に被着された先端ゴム部７ｂと、筒状部６ａの内周面に被着された内周ゴム部７ｃと、金属環６の径方向立ち上がり部６ｂの内側端面に被着された端面ゴム部７ｄと、この端面ゴム部７ｄに支持されてスリンガー４の径方向立ち上がり部４ｂの内側端面に摺動自在に密接するシールリップ（サイドリップ）７ｅと、同じく端面ゴム部７ｄに支持されてスリンガー４の取付部４ａの外周面に摺動自在に密接するシールリップ（ラジアルリップ）７ｆとを一体に有している。   The rubber-like elastic body 7 includes an outer peripheral rubber portion 7a attached to the tip outer peripheral surface of the cylindrical portion 6a of the metal ring 6, a tip rubber portion 7b attached to the tip end surface of the cylindrical portion 6a, and a cylindrical shape. The inner peripheral rubber portion 7c attached to the inner peripheral surface of the portion 6a, the end rubber portion 7d attached to the inner end surface of the radial rising portion 6b of the metal ring 6, and the end rubber portion 7d A seal lip (side lip) 7e that is slidably in close contact with the inner end surface of the radially rising portion 4b of the slinger 4 and is also supported by the end surface rubber portion 7d so as to be slidable on the outer peripheral surface of the attachment portion 4a of the slinger 4. A seal lip (radial lip) 7f that is in close contact is integrally provided.

また、スリンガー４における最外周部位であって径方向立ち上がり部４ｂの先端には、軸方向他方へ向けて外周筒部４ｃが一体成形されており、これによりスリンガー４は全体として断面略コ字状に形成されている。   In addition, an outer peripheral cylindrical portion 4c is integrally formed toward the other end in the axial direction at the distal end of the radially rising portion 4b, which is the outermost peripheral portion of the slinger 4, so that the slinger 4 as a whole has a substantially U-shaped cross section. Is formed.

また、この外周筒部４ｃの内周側に位置して、リップシール５のゴム状弾性体７における端面ゴム部７ｄには、軸方向一方へ向けて環状の膨出部７ｇが一体成形されており、この膨出部７ｇは筒状の外周面７ｈを有している。   In addition, an annular bulging portion 7g is formed integrally with the end surface rubber portion 7d of the rubber-like elastic body 7 of the lip seal 5 in the axial direction toward the inner peripheral side of the outer peripheral cylindrical portion 4c. The bulging portion 7g has a cylindrical outer peripheral surface 7h.

したがって、上記構成によると、外周筒部４ｃの外周面と内周ゴム部７ｃの内周面との間、外周筒部４ｃの先端面と端面ゴム部７ｄの内側端面との間および外周筒部４ｃの内周面と膨出部７ｇの外周面７ｈとの間にそれぞれ微小間隙のラビリンス空間８，９，１０が形成され、この３箇所のラビリンス空間８，９，１０が、断面略コ字状を呈して、一連に連続するよう構成されているために、このラビリンス空間８，９，１０によるラビリンスシール１１の全長が従来よりも長く設定されている。したがって、このようにラビリンスシール１１の全長が従来よりも長く設定されていることにより、ラビリンスシール１１によるシール性能を一層高めることができ、泥水等のダストが密封装置１内、延いてはベアリング内へ浸入するのを有効に抑えることができる。   Therefore, according to the above configuration, between the outer peripheral surface of the outer peripheral cylindrical portion 4c and the inner peripheral surface of the inner peripheral rubber portion 7c, between the front end surface of the outer peripheral cylindrical portion 4c and the inner end surface of the end surface rubber portion 7d, and the outer peripheral cylindrical portion. 4 c of labyrinth spaces 8, 9, and 10 are formed between the inner peripheral surface of 4c and the outer peripheral surface 7h of the bulging portion 7g, and these three labyrinth spaces 8, 9, and 10 are substantially U-shaped in cross section. Therefore, the entire length of the labyrinth seal 11 by the labyrinth spaces 8, 9, and 10 is set longer than the conventional one. Therefore, since the overall length of the labyrinth seal 11 is set longer than before, the sealing performance by the labyrinth seal 11 can be further enhanced, and dust such as muddy water is contained in the sealing device 1 and in the bearing. It is possible to effectively suppress the intrusion.

第二実施例・・・
図２は、本発明の第二実施例に係る密封装置１の要部断面を示している。当該実施例に係る密封装置１は、自動車関連分野においてハブベアリング用シール（ハブシール）として用いられるものであって、以下のように構成されている。尚、当該実施例は本願の請求項２に係る発明についての実施例である。 Second embodiment ...
FIG. 2 shows a cross section of the main part of the sealing device 1 according to the second embodiment of the present invention. The sealing device 1 according to this embodiment is used as a hub bearing seal (hub seal) in the field of automobiles and is configured as follows. In addition, the said Example is an Example regarding the invention which concerns on Claim 2 of this application.

すなわち先ず、当該密封装置１は、相対回転する二部材のうちの一方の部材であるベアリング内輪（内周側取付部材、図示せず）に取り付けられてベアリング内輪とともに回転する内周側密封部材２と、二部材のうちの他方の部材であるベアリング外輪（外周側取付部材、図示せず）に取り付けられて非回転の外周側密封部材３とを有している。   That is, first, the sealing device 1 is attached to a bearing inner ring (an inner peripheral side mounting member, not shown), which is one of two members that rotate relative to each other, and rotates together with the bearing inner ring. And a non-rotating outer peripheral side sealing member 3 attached to a bearing outer ring (an outer peripheral side mounting member, not shown) which is the other of the two members.

内周側密封部材２は、金属環の一種であるスリンガー部材（以下、単にスリンガーとも称する）４によって構成されている。   The inner peripheral side sealing member 2 is constituted by a slinger member (hereinafter also simply referred to as a slinger) 4 which is a kind of metal ring.

このスリンガー４は、板金等の金属材よりなり、筒状部４ａの軸方向一方（図上右方）の端部に径方向外方（図上上方）へ向けて環状の径方向立ち上がり部（平面部）４ｂを一体成形したものであって、前者の筒状部４ａをもってベアリング内輪の外周面に嵌着される。   The slinger 4 is made of a metal material such as a sheet metal, and has an annular radial rising portion (on the upper side in the drawing) toward the radially outer side (upward in the drawing) at one end (right side in the drawing) of the cylindrical portion 4a. The flat portion 4b is integrally formed, and the former cylindrical portion 4a is fitted to the outer peripheral surface of the bearing inner ring.

一方、外周側密封部材３は、リップシール部材（以下、単にリップシールとも称する）５によって構成されており、このリップシール５は、金属環６と、この金属環６に被着（加硫接着）されたゴム状弾性体７との組み合わせにより構成されている。   On the other hand, the outer peripheral side sealing member 3 is constituted by a lip seal member (hereinafter also simply referred to as a lip seal) 5, which is attached to the metal ring 6 and the metal ring 6 (vulcanized adhesion). The rubber-like elastic body 7 is combined.

金属環６は、板金等の金属材よりなり、筒状部６ａの軸方向他方（図上左方）の端部に径方向内方（図上下方）へ向けて環状の径方向立ち上がり部（平面部）６ｂを一体成形したものであって、前者の筒状部６ａをもってベアリング外輪の内周面に嵌着される。   The metal ring 6 is made of a metal material such as sheet metal, and has an annular radial rising portion (inward in the drawing) toward the radially inner side (downward in the drawing) at the other axial end (left in the drawing) of the cylindrical portion 6a. The flat portion 6b is integrally formed, and the former cylindrical portion 6a is fitted to the inner peripheral surface of the bearing outer ring.

ゴム状弾性体７は、金属環６の筒状部６ａの先端外周面に被着された外周ゴム部７ａと、筒状部６ａの先端面に被着された先端ゴム部７ｂと、筒状部６ａの内周面に被着された内周ゴム部７ｃと、金属環６の径方向立ち上がり部６ｂの内側端面に被着された端面ゴム部７ｄと、この端面ゴム部７ｄに支持されてスリンガー４の径方向立ち上がり部４ｂの内側端面に摺動自在に密接するシールリップ（サイドリップ）７ｅと、同じく端面ゴム部７ｄに支持されてスリンガー４の取付部４ａの外周面に摺動自在に密接するシールリップ（ラジアルリップ）７ｆとを一体に有している。   The rubber-like elastic body 7 includes an outer peripheral rubber portion 7a attached to the tip outer peripheral surface of the cylindrical portion 6a of the metal ring 6, a tip rubber portion 7b attached to the tip end surface of the cylindrical portion 6a, and a cylindrical shape. The inner peripheral rubber portion 7c attached to the inner peripheral surface of the portion 6a, the end rubber portion 7d attached to the inner end surface of the radial rising portion 6b of the metal ring 6, and the end rubber portion 7d A seal lip (side lip) 7e that is slidably in close contact with the inner end surface of the radially rising portion 4b of the slinger 4 and is also supported by the end surface rubber portion 7d so as to be slidable on the outer peripheral surface of the attachment portion 4a of the slinger 4. A seal lip (radial lip) 7f that is in close contact is integrally provided.

また、スリンガー４における最外周部位であって径方向立ち上がり部４ｂの先端には、軸方向他方へ向けて外周筒部４ｃが一体成形されており、当該実施例では特にこの外周筒部４ｃが、その先端部から基端部へかけて漸次拡径する傾斜面状（テーパー面状もしくは円錐面状）に形成されている。方向としては、軸方向他方（図上左方）から一方（図上右方）へかけて漸次拡径する向きである。またこれに合わせて、リップシール部材５におけるゴム状弾性体７の内周ゴム部７ｃの内周面７ｉも、軸方向他方から一方へかけて漸次拡径する傾斜面状に形成されており、これにより外周筒部４ｃの外周面４ｄと内周ゴム部７ｃの内周面７ｉとの間に、軸方向他方から一方へかけて漸次拡径する傾斜面状のラビリンス空間１２が形成され、これによりラビリンスシール１１が構成されている。この傾斜面状のラビリンス空間１２は例えば、上記第一実施例にて示した軸方向ストレート形状のラビリンス空間８と比較して、その長さを長く設定することができるものでもある。   In addition, an outer peripheral cylindrical portion 4c is integrally formed toward the other end in the axial direction at the tip of the radially rising portion 4b, which is the outermost peripheral portion of the slinger 4, and in this embodiment, in particular, the outer peripheral cylindrical portion 4c is It is formed in an inclined surface shape (tapered surface shape or conical surface shape) that gradually increases in diameter from the distal end portion to the proximal end portion. The direction is a direction in which the diameter gradually increases from the other axial direction (left in the figure) to one (right in the figure). In accordance with this, the inner peripheral surface 7i of the inner peripheral rubber portion 7c of the rubber-like elastic body 7 in the lip seal member 5 is also formed in an inclined surface shape that gradually increases in diameter from the other side in the axial direction, As a result, an inclined surface labyrinth space 12 is formed between the outer peripheral surface 4d of the outer peripheral cylindrical portion 4c and the inner peripheral surface 7i of the inner peripheral rubber portion 7c. Thus, the labyrinth seal 11 is configured. For example, the inclined labyrinth space 12 can be set longer than the axial straight labyrinth space 8 shown in the first embodiment.

上記構成の密封装置１において、回転側のスリンガー４がベアリング内輪とともに高速で回転すると、傾斜面状のラビリンス空間１２内において、遠心力の作用による泥水押し戻し機能が発揮される。ラビリンス空間１２に浸入してきた泥水はこの押し戻し機能によって外側方向（矢印方向）に押し戻される。したがって、上記ラビリンス空間１２によるラビリンスシール効果に加えて、この遠心力による泥水押し戻し効果が発揮されることから、総じて当該密封装置１のシール能力を高めることができ、よって泥水等のダストが密封装置１内、延いてはベアリング内へ浸入するのを有効に抑えることができる。   In the sealing device 1 configured as described above, when the rotation-side slinger 4 rotates at a high speed together with the bearing inner ring, a muddy water push-back function by the action of centrifugal force is exhibited in the inclined labyrinth space 12. The muddy water that has entered the labyrinth space 12 is pushed back outward (arrow direction) by this push-back function. Therefore, in addition to the labyrinth sealing effect by the labyrinth space 12, the mud water push-back effect by this centrifugal force is exhibited, so that the sealing ability of the sealing device 1 can be enhanced as a whole. It is possible to effectively suppress the intrusion into the inside of the bearing and the bearing.

尚、傾斜面状のラビリンス空間１２の断面形状は、図示したような斜めストレート形状のほか、円弧状に形成されても良い。   In addition, the cross-sectional shape of the inclined labyrinth space 12 may be formed in an arc shape in addition to the oblique straight shape as illustrated.

また、外周筒部４ｃまたは／および内周ゴム部７ｃの内周面７ｉに突起または溝を設けても良い。前記突起または溝の形状としては、軸方向と平行のものにして振り切り効果を向上したり、軸方向に対して傾斜させたり、螺旋状にしてねじ状とすることにより、ポンピング作用によるシール効果を期待することもできる。   Moreover, you may provide a processus | protrusion or a groove | channel in the outer peripheral cylinder part 4c or / and the inner peripheral surface 7i of the inner peripheral rubber part 7c. The shape of the protrusion or groove is parallel to the axial direction to improve the swing-off effect, tilted with respect to the axial direction, or spiraled to have a screw shape, thereby providing a sealing effect due to the pumping action. You can also expect.

本発明の第一実施例に係る密封装置の要部断面図Sectional drawing of the principal part of the sealing device which concerns on 1st Example of this invention. 本発明の第二実施例に係る密封装置の要部断面図Sectional drawing of the principal part of the sealing device which concerns on 2nd Example of this invention. 従来例に係る密封装置の装着状態を示す断面図Sectional drawing which shows the mounting state of the sealing device which concerns on a prior art example 他の従来例に係る密封装置の要部断面図Sectional drawing of the principal part of the sealing device which concerns on another prior art example

符号の説明Explanation of symbols

１ 密封装置
２ 内周側密封部材
３ 外周側密封部材
４ スリンガー部材（金属環）
４ａ，６ａ 筒状部
４ｂ．６ｂ 径方向立ち上がり部
４ｃ 外周筒部
４ｄ，７ｈ 外周面
５ リップシール部材
６ 金属環
７ ゴム状弾性体
７ａ 外周ゴム部
７ｂ 先端ゴム部
７ｃ 内周ゴム部
７ｄ 端面ゴム部
７ｅ，７ｆ シールリップ
７ｇ 膨出部
７ｉ 内周面
８，９，１０，１２ ラビリンス空間
１１ ラビリンスシール DESCRIPTION OF SYMBOLS 1 Sealing device 2 Inner peripheral side sealing member 3 Outer peripheral side sealing member 4 Slinger member (metal ring)
4a, 6a Tubular part 4b. 6b Radial rising part 4c Outer peripheral cylinder part 4d, 7h Outer peripheral surface 5 Lip seal member 6 Metal ring 7 Rubber elastic body 7a Outer rubber part 7b End rubber part 7c Inner peripheral rubber part 7d End rubber part 7e, 7f Seal lip 7g Swelling Protruding part 7i Inner peripheral surface 8, 9, 10, 12 Labyrinth space 11 Labyrinth seal

Claims (2)

相対回転する二部材のうちの一方である内周側取付部材に取り付けられる内周側密封部材（２）と、前記二部材のうちの他方である外周側取付部材に取り付けられる外周側密封部材（３）との組み合わせよりなる密封装置（１）であって、
前記内周側密封部材（２）は、前記内周側取付部材に固定される金属環（４）を有し、
前記外周側密封部材（３）は、前記外周側取付部材に固定される金属環（６）と、前記金属環（６）に被着されて前記内周側密封部材（２）の金属環（４）に摺動自在に密接するゴム状弾性体製のシールリップ（７ｅ）（７ｆ）とを有する密封装置（１）において、
前記内周側密封部材（２）の金属環（４）における外周部位に外周筒部（４ｃ）を設け、
前記外周筒部（４ｃ）の外周面と前記外周側密封部材（３）との間、前記外周筒部（４ｃ）の先端面と前記外周側密封部材（３）との間および前記外周筒部（４ｃ）の内周面と前記外周側密封部材（３）との間に、一連のラビリンス空間（８）（９）（１０）を設けたことを特徴とする密封装置。 An inner peripheral side sealing member (2) attached to the inner peripheral side attachment member which is one of the two members rotating relative to each other, and an outer peripheral side sealing member attached to the outer peripheral side attachment member which is the other of the two members ( A sealing device (1) comprising a combination with 3),
The inner circumferential sealing member (2) has a metal ring (4) fixed to the inner circumferential mounting member,
The outer peripheral side sealing member (3) includes a metal ring (6) fixed to the outer peripheral side mounting member, and a metal ring (6) attached to the metal ring (6) to the inner peripheral side sealing member (2). 4) In a sealing device (1) having a seal lip (7e) (7f) made of a rubber-like elastic body that is slidably in close contact with 4),
An outer peripheral cylindrical portion (4c) is provided on the outer peripheral portion of the metal ring (4) of the inner peripheral sealing member (2),
Between the outer peripheral surface of the outer peripheral cylindrical part (4c) and the outer peripheral side sealing member (3), between the front end surface of the outer peripheral cylindrical part (4c) and the outer peripheral side sealing member (3), and the outer peripheral cylindrical part. A sealing device characterized in that a series of labyrinth spaces (8), (9), and (10) are provided between the inner peripheral surface of (4c) and the outer peripheral sealing member (3). 相対回転する二部材のうちの一方である内周側取付部材に取り付けられる内周側密封部材（２）と、前記二部材のうちの他方である外周側取付部材に取り付けられる外周側密封部材（３）との組み合わせよりなる密封装置（１）であって、
前記内周側密封部材（２）は、前記内周側取付部材に固定される金属環（４）を有し、
前記外周側密封部材（３）は、前記外周側取付部材に固定される金属環（６）と、前記金属環（６）に被着されて前記内周側密封部材（２）の金属環（４）に摺動自在に密接するゴム状弾性体製のシールリップ（７ｅ）（７ｆ）とを有する密封装置において、
前記内周側密封部材（２）の金属環（４）における外周部位に外周筒部（４ｃ）を設け、
前記外周筒部（４ｃ）の外周面（４ｄ）にその先端部から基端部へかけて漸次拡径する傾斜面を設けるとともに、対応する傾斜面を前記外周側密封部材（３）に設け、
前記傾斜面によってラビリンス空間（１２）を設けたことを特徴とする密封装置。 An inner peripheral side sealing member (2) attached to the inner peripheral side attachment member which is one of the two members rotating relative to each other, and an outer peripheral side sealing member attached to the outer peripheral side attachment member which is the other of the two members ( A sealing device (1) comprising a combination with 3),
The inner circumferential sealing member (2) has a metal ring (4) fixed to the inner circumferential mounting member,
The outer peripheral side sealing member (3) includes a metal ring (6) fixed to the outer peripheral side mounting member, and a metal ring (6) attached to the metal ring (6) to the inner peripheral side sealing member (2). 4) In a sealing device having a seal lip (7e) (7f) made of a rubber-like elastic body that is slidably in close contact with 4)
An outer peripheral cylindrical portion (4c) is provided on the outer peripheral portion of the metal ring (4) of the inner peripheral sealing member (2),
Provided on the outer peripheral surface (4d) of the outer peripheral cylindrical portion (4c) is an inclined surface that gradually increases in diameter from its distal end portion to the base end portion, and a corresponding inclined surface is provided on the outer peripheral sealing member (3),
A sealing device, wherein a labyrinth space (12) is provided by the inclined surface.
JP2005166729A 2005-06-07 2005-06-07 Sealing device Pending JP2006342827A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2005166729A JP2006342827A (en) 2005-06-07 2005-06-07 Sealing device
PCT/JP2006/310296 WO2006132083A1 (en) 2005-06-07 2006-05-24 Sealing device
CN2006800198923A CN101189461B (en) 2005-06-07 2006-05-24 Sealing device
US11/921,730 US20090127796A1 (en) 2005-06-07 2006-05-24 Sealing device
KR1020077031040A KR20080018920A (en) 2005-06-07 2006-05-24 Sealing device
EP06746779A EP1890061A1 (en) 2005-06-07 2006-05-24 Sealing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005166729A JP2006342827A (en) 2005-06-07 2005-06-07 Sealing device

Publications (1)

Publication Number Publication Date
JP2006342827A true JP2006342827A (en) 2006-12-21

Family

ID=37639944

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005166729A Pending JP2006342827A (en) 2005-06-07 2005-06-07 Sealing device

Country Status (2)

Country Link
JP (1) JP2006342827A (en)
CN (1) CN101189461B (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008196568A (en) * 2007-02-13 2008-08-28 Nok Corp Sealing device for water pump
JP2012251568A (en) * 2011-05-31 2012-12-20 Mitsubishi Motors Corp Sealing device
US8702312B2 (en) 2008-05-27 2014-04-22 Nsk Ltd. Rolling bearing
JP2014109330A (en) * 2012-12-03 2014-06-12 Ntn Corp Sealing device of wheel bearing
JP2015110958A (en) * 2013-12-06 2015-06-18 Ntn株式会社 SEALING DEVICE AND WHEEL BEARING DEVICE HAVING THE SAME
JP2016003718A (en) * 2014-06-17 2016-01-12 Nok株式会社 Sealing device
JP2016014407A (en) * 2014-07-01 2016-01-28 内山工業株式会社 Hermetic device
JP2016061392A (en) * 2014-09-19 2016-04-25 内山工業株式会社 Sealing device
JP2016080145A (en) * 2014-10-22 2016-05-16 内山工業株式会社 Seal
JP2016153697A (en) * 2014-12-04 2016-08-25 Nok株式会社 Oil seal and ring member
JP2016166667A (en) * 2015-03-10 2016-09-15 日本精工株式会社 Rolling bearing with sealing device, and sealing device for rolling bearing
WO2016174792A1 (en) * 2015-04-30 2016-11-03 内山工業株式会社 Sealing device
JP2017057930A (en) * 2015-09-16 2017-03-23 Ntn株式会社 Wheel bearing device
JP2017180552A (en) * 2016-03-29 2017-10-05 内山工業株式会社 Bearing sealing device
JP2018071739A (en) * 2016-11-02 2018-05-10 株式会社ジェイテクト Wheel bearing device
WO2019054473A1 (en) * 2017-09-15 2019-03-21 Ntn株式会社 Sealing member, and wheel bearing device comprising same
JP2020115026A (en) * 2019-01-18 2020-07-30 日本精工株式会社 Combined seal ring and hub unit bearing
WO2022202928A1 (en) * 2021-03-24 2022-09-29 日本精工株式会社 Rolling bearing

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6293444B2 (en) * 2013-09-20 2018-03-14 Ntn株式会社 Rolling bearing sealing device
WO2015190450A1 (en) 2014-06-10 2015-12-17 Nok株式会社 Seal device
JP6174288B1 (en) * 2015-11-30 2017-08-02 Nok株式会社 Sealing device
BR112018073599A2 (en) * 2016-05-18 2019-02-26 Nok Corporation annular cavity sealing structure and sealing device
JP6692214B2 (en) * 2016-05-24 2020-05-13 Ntn株式会社 Bearing sealing device
CN107420546A (en) * 2017-08-11 2017-12-01 安徽农业大学 Paddy field tractor supporting wheel bearing Oil sealing assembly and its second order seam sealing structure
DE102018103109A1 (en) * 2018-02-13 2019-08-14 Schaeffler Technologies AG & Co. KG Wheel bearing assembly with a rotation axis

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0942300A (en) * 1995-08-01 1997-02-10 Koyo Seiko Co Ltd Sealing device
JPH09144767A (en) * 1995-11-24 1997-06-03 Koyo Seiko Co Ltd Sealing device of bearing
JP2000346205A (en) * 1999-06-09 2000-12-15 Komatsu Ltd Labyrinth seal for preventing soil intrusion
JP2004132524A (en) * 2002-10-15 2004-04-30 Arai Pump Mfg Co Ltd Sealing device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3059562U (en) * 1998-12-01 1999-07-09 一博 今井 Photo seal with eyes as subject
JP2004092738A (en) * 2002-08-30 2004-03-25 Nsk Ltd Rolling bearing and motor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0942300A (en) * 1995-08-01 1997-02-10 Koyo Seiko Co Ltd Sealing device
JPH09144767A (en) * 1995-11-24 1997-06-03 Koyo Seiko Co Ltd Sealing device of bearing
JP2000346205A (en) * 1999-06-09 2000-12-15 Komatsu Ltd Labyrinth seal for preventing soil intrusion
JP2004132524A (en) * 2002-10-15 2004-04-30 Arai Pump Mfg Co Ltd Sealing device

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008196568A (en) * 2007-02-13 2008-08-28 Nok Corp Sealing device for water pump
US8702312B2 (en) 2008-05-27 2014-04-22 Nsk Ltd. Rolling bearing
JP5545210B2 (en) * 2008-05-27 2014-07-09 日本精工株式会社 Rolling bearing
JP2012251568A (en) * 2011-05-31 2012-12-20 Mitsubishi Motors Corp Sealing device
JP2014109330A (en) * 2012-12-03 2014-06-12 Ntn Corp Sealing device of wheel bearing
JP2015110958A (en) * 2013-12-06 2015-06-18 Ntn株式会社 SEALING DEVICE AND WHEEL BEARING DEVICE HAVING THE SAME
JP2016003718A (en) * 2014-06-17 2016-01-12 Nok株式会社 Sealing device
JP2016014407A (en) * 2014-07-01 2016-01-28 内山工業株式会社 Hermetic device
JP2016061392A (en) * 2014-09-19 2016-04-25 内山工業株式会社 Sealing device
JP2016080145A (en) * 2014-10-22 2016-05-16 内山工業株式会社 Seal
JP2016153697A (en) * 2014-12-04 2016-08-25 Nok株式会社 Oil seal and ring member
JP2016166667A (en) * 2015-03-10 2016-09-15 日本精工株式会社 Rolling bearing with sealing device, and sealing device for rolling bearing
WO2016174792A1 (en) * 2015-04-30 2016-11-03 内山工業株式会社 Sealing device
JP2016211595A (en) * 2015-04-30 2016-12-15 内山工業株式会社 Sealing device
US10344803B2 (en) 2015-04-30 2019-07-09 Uchiyama Manufacturing Corp. Sealing device
DE112015006501B4 (en) 2015-04-30 2023-05-04 Uchiyama Manufacturing Corp. sealing device
JP2017057930A (en) * 2015-09-16 2017-03-23 Ntn株式会社 Wheel bearing device
DE102017105896A1 (en) 2016-03-29 2017-10-05 Uchiyama Manufacturing Corp. bearing seal
US10527101B2 (en) 2016-03-29 2020-01-07 Uchiyama Manufacturing Corp. Bearing sealing device
JP2017180552A (en) * 2016-03-29 2017-10-05 内山工業株式会社 Bearing sealing device
JP2018071739A (en) * 2016-11-02 2018-05-10 株式会社ジェイテクト Wheel bearing device
WO2019054473A1 (en) * 2017-09-15 2019-03-21 Ntn株式会社 Sealing member, and wheel bearing device comprising same
JP2019052735A (en) * 2017-09-15 2019-04-04 Ntn株式会社 Seal member and wheel bearing device with the same
CN111094777A (en) * 2017-09-15 2020-05-01 Ntn株式会社 Sealing member and wheel bearing device provided with same
US10900524B2 (en) 2017-09-15 2021-01-26 Ntn Corporation Sealing member, and bearing device for vehicle wheel comprising same
CN111094777B (en) * 2017-09-15 2021-11-02 Ntn株式会社 Sealing member and wheel bearing device provided with same
JP2020115026A (en) * 2019-01-18 2020-07-30 日本精工株式会社 Combined seal ring and hub unit bearing
WO2022202928A1 (en) * 2021-03-24 2022-09-29 日本精工株式会社 Rolling bearing

Also Published As

Publication number Publication date
CN101189461B (en) 2010-06-09
CN101189461A (en) 2008-05-28

Similar Documents

Publication Publication Date Title
JP2006342827A (en) Sealing device
JP4924789B2 (en) Sealing device
US20090127796A1 (en) Sealing device
JP2008128396A (en) Sealing device
JP5800141B2 (en) Sealing device
JP2010025138A (en) Sealing arrangement
JPWO2018110626A1 (en) Sealing device
JP2009041708A (en) Sealing device
JP2008014384A (en) Sealing device
JP2005240894A (en) Sealing device
JP2018025283A (en) Sealing device
JP2017190804A (en) Seal
JP2008095919A (en) Sealing device
JP2004263738A (en) Sealing device
JP4539823B2 (en) Sealing device
JP2011158031A (en) Needle roller bearing
JP2007064459A (en) Sealing device
JP2010014143A (en) Sealing device
JP2008128378A (en) Sealing device
JP2009002425A (en) Sealing device
JP2006342828A (en) Sealing device
JP2004263797A (en) Sealing device
JP2006161860A (en) Sealing device
JP2011058524A (en) Rotary shaft seal structure of transmission device for automobile
JP4605377B2 (en) Sealing device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20080522

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110427

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110622

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20111102

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20120404