JP2008101639A - Sealing device - Google Patents

Sealing device Download PDF

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JP2008101639A
JP2008101639A JP2006282450A JP2006282450A JP2008101639A JP 2008101639 A JP2008101639 A JP 2008101639A JP 2006282450 A JP2006282450 A JP 2006282450A JP 2006282450 A JP2006282450 A JP 2006282450A JP 2008101639 A JP2008101639 A JP 2008101639A
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seal lip
sealing device
shaft
connecting portion
reinforcing ring
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Japanese (ja)
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Takeshi Kanda
神田　　剛
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Nok Corp
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Nok Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a sealing device for securing following ability even if a shaft is considerably eccentric, which is free from a positional shift and the peeling of a seal lip when the shaft is inserted from an inner circumference side. <P>SOLUTION: In the sealing device 1 with a reinforcing ring 10 fit to a housing and the seal lip 40 for slidably and closely contacting with the shaft 2, a cross section of a cylindrical connection part 50 formed of a rubber-like elastic body for connecting the reinforcing ring 10 and the seal lip 40 is formed of a bellow shape 51 in a circumference direction or formed to have protruding parts 53 on either an inner circumference surface 52 or an outer circumference surface 54 at a predetermined interval in the circumference direction. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、自動車関連等の分野において高偏心の環境で使用される密封装置に関する。   The present invention relates to a sealing device used in a highly eccentric environment in fields such as automobiles.

従来、高偏心の環境で使用される密封流体の漏洩を防止する密封装置としては、たとえば、図５、図６に示すものが知られている。   Conventionally, as a sealing device for preventing leakage of a sealing fluid used in a highly eccentric environment, for example, those shown in FIGS. 5 and 6 are known.

図５の密封装置１００は、ハウジングに嵌合する補強環１０１と、ハウジングと補強環１０１との間に介在する外周取付部１０２と、軸１０３の周面をシールする密封対象側Ａ（図における上側）に延びるシールリップ１０４と、シールリップ１０４より反密封対象側Ｂ（図における下側）に位置しシールリップ１０４と一体で成形されているバンパー部１０５と、外周取付部１０２とバンパー部１０５とを一体成形により連結したベローブーツ状の可撓部１０６とを備え、可撓部１０６が伸縮することで軸１０３の径方向の偏心に対応させている（下記特許文献１を参照）。   The sealing device 100 in FIG. 5 includes a reinforcing ring 101 fitted into a housing, an outer peripheral mounting portion 102 interposed between the housing and the reinforcing ring 101, and a sealing target side A (in the drawing) that seals the peripheral surface of the shaft 103. A seal lip 104 extending upward), a bumper portion 105 which is positioned on the anti-sealing target side B (lower side in the figure) from the seal lip 104 and is integrally formed with the seal lip 104, and an outer peripheral mounting portion 102 and a bumper portion 105 And a bellows-like flexible part 106 connected by integral molding, and the flexible part 106 expands and contracts to correspond to the radial eccentricity of the shaft 103 (see Patent Document 1 below).

また、図６の密封装置１００は、ハウジングに嵌合している補強環１０１の径方向部１０１ａと、軸１０３の周面をシールするシールリップ１０４と、を繋ぐ連結部１１１を、シールリップ１０４と一体で、補強環１０１から内径方向で密封対象側Ａに斜行して延びるように成形すると共に、シールリップ１０４の軸１０３に対する締め代を大きくし、軸１０３の径方向の偏心に対応させている。   In addition, the sealing device 100 in FIG. 6 includes a connecting portion 111 that connects the radial direction portion 101 a of the reinforcing ring 101 fitted in the housing and the sealing lip 104 that seals the peripheral surface of the shaft 103. And is formed so as to extend obliquely from the reinforcing ring 101 toward the sealing target side A in the inner diameter direction, and the tightening margin for the shaft 103 of the seal lip 104 is increased so as to correspond to the eccentricity of the shaft 103 in the radial direction. ing.

しかしながら、上記の構成であると、軸１０３を内周側に密封対象側Ａから挿通したときにシールリップ１０４の軸方向位置が変動し、またはシールリップ１０４のメクレが発生するとの不具合を生じ、そのための対策として、図５の場合は、バンパー部１０５に金属環１０８を補強していたが、製造工程が増加し製造コストが上がるとの問題点を有していた。また、図６の場合においては、シールリップ１０４の軸１０３に対する締め代を大きくしているので、シールリップ１０４の耐摩耗性が悪化するとの不具合があった。   However, with the above configuration, when the shaft 103 is inserted from the sealing target side A to the inner peripheral side, the axial position of the seal lip 104 fluctuates, or a problem occurs that the seal lip 104 creases, As a countermeasure for that, in the case of FIG. 5, the metal ring 108 is reinforced to the bumper portion 105, but there is a problem that the manufacturing process increases and the manufacturing cost increases. Further, in the case of FIG. 6, there is a problem that the wear resistance of the seal lip 104 is deteriorated because the tightening margin of the seal lip 104 with respect to the shaft 103 is increased.

特開平０９−１１２７０６号公報Japanese Patent Laid-Open No. 09-112706

本発明は上記の従来技術の問題点を解決するためになされたもので、その目的とするところは、軸が大きく偏心した場合であっても追随性が確保され、しかも内周側から軸を挿通したときにシールリップの位置ズレやメクレが発生することのない密封装置を提供することである。   The present invention has been made in order to solve the above-described problems of the prior art. The object of the present invention is to ensure followability even when the shaft is greatly decentered, and further, the shaft from the inner circumference side is secured. It is an object of the present invention to provide a sealing device that does not cause a displacement of a seal lip or a peeling when inserted.

上記目的を達成するため、本発明の請求項１に係る密封装置は、相対動する二部材間をシールするものであって、一の部材に嵌合する補強環と、他の部材に摺動自在に密接するシールリップとを備える密封装置において、前記補強環と前記シールリップとを繋ぐゴム状弾性体で成形された円筒状の連結部の断面形状が、円周方向のベロー形状で形成されている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 seals between two members that move relative to each other, and slides on a reinforcing ring fitted to one member and another member. In a sealing device including a sealing lip that is freely in close contact, a cylindrical connecting portion formed of a rubber-like elastic body that connects the reinforcing ring and the sealing lip is formed in a bellows shape in a circumferential direction. It is characterized by that.

また、上記目的を達成するため、本発明の請求項２に係る密封装置は、相対動する二部材間をシールするものであって、一の部材に嵌合する補強環と、他の部材に摺動自在に密接するシールリップとを備える密封装置において、前記補強環と前記シールリップとを繋ぐゴム状弾性体で成形された円筒状の連結部の断面形状が、円周方向に所定の間隔で厚さが異なる形状で形成されていることを特徴とするものである。   Moreover, in order to achieve the said objective, the sealing device which concerns on Claim 2 of this invention seals between the two members which move relatively, Comprising: On the reinforcement ring fitted to one member, and another member In a sealing device including a sealing lip that is slidably in close contact, a cross-sectional shape of a cylindrical connecting portion formed of a rubber-like elastic body that connects the reinforcing ring and the sealing lip has a predetermined interval in the circumferential direction. And are formed in different shapes.

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

すなわち、上記構成を備えた本発明の請求項１に係る密封装置は、補強環とシールリップとを繋ぐゴム状弾性体で成形された円筒状の連結部の断面形状が、円周方向のベロー形状で形成されているので、軸方向には剛性が高く、軸を挿通したときにシールリップの位置ズレやメクレが発生するのを防止することができ、よって、ダンパ部に金属環等で補強する必要もなく、製造工程の増加を防止することができる。   That is, the sealing device according to claim 1 of the present invention having the above-described configuration is such that the cross-sectional shape of the cylindrical connecting portion formed of a rubber-like elastic body that connects the reinforcing ring and the seal lip has a bellows in the circumferential direction. Since it is formed in a shape, it has high rigidity in the axial direction and can prevent the displacement of the seal lip and the creaking when the shaft is inserted, so the damper part is reinforced with a metal ring etc. It is not necessary to increase the number of manufacturing steps.

更に、円筒状の連結部の断面形状が円周方向のベロー形状で形成されていると、径方向には柔軟に屈曲するので、軸が大きく偏心した場合であってもシールリップを追随させることができ、よって、シールリップの締め代を大きく設定する等の対応が不要となり、シールリップの耐摩耗性の悪化を防止することができる。   Furthermore, if the cross-sectional shape of the cylindrical connecting portion is formed in a circumferential bellows shape, it will bend flexibly in the radial direction so that the seal lip can follow even when the shaft is greatly decentered. Therefore, it is not necessary to take a measure such as setting a large margin for the seal lip, and it is possible to prevent deterioration of the wear resistance of the seal lip.

また、上記構成を備えた本発明の請求項２に係る密封装置は、円筒状の連結部の断面形状が円周方向に所定の間隔で厚さが異なる形状で形成されているので、軸方向には剛性が高く、軸を挿通したときにシールリップの位置ズレやメクレが発生するのを防止することができ、また径方向には柔軟に屈曲し、軸が大きく偏心した場合であってもシールリップを追随させることができ、請求項１に係る密封装置と同様の効果を奏することができる。更に、円筒状の連結部の断面形状が円周方向に所定の間隔で厚さが異なる形状で形成されているので、請求項１の連結部の断面形状が円周方向のベロー形状で形成されている場合に対して、連結部の内側と外側の成形型について、円周方向の位置決めの必要がなく、連結部を形成することができる。   Further, in the sealing device according to claim 2 of the present invention having the above-described configuration, since the cross-sectional shape of the cylindrical connecting portion is formed in a shape having a different thickness at a predetermined interval in the circumferential direction, the axial direction Is highly rigid and can prevent seal lip misalignment and creaking when the shaft is inserted, and it can be bent flexibly in the radial direction even if the shaft is greatly eccentric. The seal lip can be followed, and the same effect as the sealing device according to claim 1 can be obtained. Further, since the cross-sectional shape of the cylindrical connecting portion is formed in a shape having a different thickness at a predetermined interval in the circumferential direction, the cross-sectional shape of the connecting portion in claim 1 is formed in a circumferential bellows shape. In contrast, the inner and outer molds of the connecting portion need not be positioned in the circumferential direction, and the connecting portion can be formed.

以下に図面を参照して、この発明の好適な実施の形態を例示して説明する。   Preferred embodiments of the present invention will be described below with reference to the drawings.

第１実施形態：
図１は、高偏心の環境で使用される密封流体の漏洩を防止する本発明に係る密封装置１の要部断面図であり、図２は、第１実施形態における図１のＡ−Ａ方向の切断断面図である。 First embodiment:
FIG. 1 is a cross-sectional view of an essential part of a sealing device 1 according to the present invention for preventing leakage of a sealing fluid used in a highly eccentric environment, and FIG. 2 is a direction of AA in FIG. 1 in the first embodiment. FIG.

本発明に係る密封装置１は、図示しないハウジング（一の部材）と軸（他の部材）２とで形成する環状空間をシールするもので、補強環１０と、シールリップ４０とを備えている。   The sealing device 1 according to the present invention seals an annular space formed by a housing (one member) and a shaft (other member) 2 (not shown), and includes a reinforcing ring 10 and a seal lip 40. .

補強環１０は、板金等で成形されており、ハウジングに後述する外周取付部２１を介して嵌合している軸方向部１１と軸方向部１１の反密封対象側Ｂ端部から内周方向に延びる径方向１２とが一体に成形されている。   The reinforcing ring 10 is formed of a sheet metal or the like, and is fitted in an inner circumferential direction from an end portion B of the axial direction portion 11 and the axial direction portion 11 that are fitted to the housing via an outer circumferential attachment portion 21 described later. And the radial direction 12 extending in the same manner.

補強環１０には、外周取付部２１と、固定部３０と、シールリップ４０と、連結部５０と、を有するゴム状弾性体で一体成形されているシール本体部２０が固着している。   The reinforcing ring 10 is fixed with a seal body 20 integrally formed of a rubber-like elastic body having an outer peripheral mounting portion 21, a fixing portion 30, a seal lip 40, and a connecting portion 50.

外周取付部２１は、軸方向部１１の外周側に固着していてハウジングの内周面に密接し、ハウジングと補強環１０との間をシールしている。   The outer peripheral attachment portion 21 is fixed to the outer peripheral side of the axial direction portion 11, is in close contact with the inner peripheral surface of the housing, and seals between the housing and the reinforcing ring 10.

固定部３０は、径方向１２部の内周側端部１２ａを被覆するように固着しており、内周側の反密封対象側Ｂには、反密封対象側Ｂに向かって延び軸２の周面に摺動自在に密接する断面形状が矩形のダストリップ３１が一体成形により形設されている。   The fixing portion 30 is fixed so as to cover the inner peripheral side end portion 12a in the radial direction 12 portions. The anti-sealing target side B on the inner peripheral side extends toward the anti-sealing target side B, and the shaft 2 extends. Dustrip 31 having a rectangular cross-sectional shape that is slidably in close contact with the peripheral surface is formed by integral molding.

シールリップ４０は、密封対象側Ａに向かって延び軸２の周面に摺動自在に密接する先端部４１の断面形状が三角形状のリップタイプであり、先端部４１の反対側の外周側には、軸２の径方向の変動に対して、シールリップ４０に緊迫力を付与するガータスプリング３を装着するための凹部４２が形成されている。   The seal lip 40 is a lip type having a triangular cross-sectional shape of a tip portion 41 extending toward the sealing target side A and slidably in close contact with the peripheral surface of the shaft 2, and on the outer peripheral side opposite to the tip portion 41. Is formed with a recess 42 for mounting the garter spring 3 that applies a pressing force to the seal lip 40 against the radial variation of the shaft 2.

連結部５０は、シールリップ４０の反密封対象側Ｂと固定部３０の密封対象側Ａとの間を軸に平行に延びるように連結している円筒状であって、その連結部５０の図１のＡ−Ａ方向の断面形状は、図２に示す通り、円周方向に連続した山谷が所定の間隔で形成された円周方向のベロー形状５１であって、円筒状の連結部５０の軸方向全長に亙って形成されている。   The connecting portion 50 has a cylindrical shape connecting the anti-sealing target side B of the seal lip 40 and the sealing target side A of the fixed portion 30 so as to extend in parallel to the axis. 2 is a circumferential bellows shape 51 in which peaks and valleys continuous in the circumferential direction are formed at predetermined intervals, as shown in FIG. It is formed over the entire axial length.

上記構成に係る密封装置１を環状空間に装着させるには、ハウジングに外周取付部２１を介して補強環１０の軸方向部１１を嵌合させ、その後に、軸２を内周側に挿通し、シールリップ４０の先端部４１を軸２の周面に密接させることにより行う。この場合に、連結部５０の断面形状が円周方向のベロー形状５１で、円筒状の連結部５０の軸方向全長に亙って形成されているので、軸方向の剛性を高くすることができ、軸２を内周側に密封対象側Ａから挿通するときのシールリップ４０の位置ずれやメクレの発生を防止することが可能となる。   In order to mount the sealing device 1 according to the above configuration in the annular space, the axial direction portion 11 of the reinforcing ring 10 is fitted to the housing via the outer peripheral attachment portion 21, and then the shaft 2 is inserted into the inner peripheral side. The tip 41 of the seal lip 40 is brought into close contact with the peripheral surface of the shaft 2. In this case, since the cross-sectional shape of the connecting portion 50 is a bellows shape 51 in the circumferential direction and is formed over the entire axial length of the cylindrical connecting portion 50, the axial rigidity can be increased. It is possible to prevent the positional deviation of the seal lip 40 and the occurrence of the peeling when the shaft 2 is inserted from the sealing target side A to the inner peripheral side.

また、連結部５０の断面形状が円周方向のベロー形状５１で形成されているため径方向には柔軟に屈曲し、従来のベローブーツ形状の可撓部と同様に、軸２が大きく偏心した場合であってもシールリップ４０を追随させることができ、シール性を確保することが可能となる。   Further, since the cross-sectional shape of the connecting portion 50 is formed by a circumferential bellows shape 51, the connecting portion 50 is flexibly bent in the radial direction, and the shaft 2 is greatly decentered similarly to the conventional bellows boot-shaped flexible portion. Even in this case, the seal lip 40 can be followed, and the sealing performance can be ensured.

第２実施形態：
本発明の第２実施形態に係る密封装置１は、第１実施形態と連結部５０の断面形状が異なる以外、他の構成は同じであるので、異なる部分について主に説明する。 Second embodiment:
Since the sealing apparatus 1 which concerns on 2nd Embodiment of this invention is the same as that of 1st Embodiment except the cross-sectional shape of the connection part 50 being different, it is mainly demonstrated about a different part.

第２実施形態における連結部５０の図１のＡ−Ａ方向断面形状は、図３に示す通り、内周面５２に凸部５３が円周方向に所定の間隔で形成されている形状で、円筒状の連結部５０の軸方向全長に亙り形成されている。これにより円周方向に所定の間隔で厚さが異なる形状で形成されることとなり、径方向の柔軟性が確保されると共に、軸方向全長に亙り形成されているので軸方向の剛性が確保されることになる。なお、凸部５３の形状や個数等については特に限定されるものでなく、使用条件により適宜選択される。また凸部５３と凸部５３の間隔は、等間隔に形成されているのが好適であるが、不等間隔で形成されている場合であってもよい。   The cross-sectional shape in the AA direction of FIG. 1 of the connecting portion 50 in the second embodiment is a shape in which convex portions 53 are formed at predetermined intervals in the circumferential direction on the inner peripheral surface 52, as shown in FIG. The cylindrical connecting portion 50 is formed over the entire axial length. As a result, it is formed in a shape with different thicknesses at predetermined intervals in the circumferential direction, ensuring flexibility in the radial direction and being formed over the entire length in the axial direction, so that rigidity in the axial direction is ensured. It will be. In addition, the shape, the number, and the like of the convex portions 53 are not particularly limited, and are appropriately selected depending on use conditions. Moreover, although it is suitable that the space | interval of the convex part 53 and the convex part 53 is formed in equal intervals, the case where it forms in unequal intervals may be sufficient.

上記構成の第２実施形態に係る密封装置においては、連結部５０の断面形状が内周面５２に所定間隔で凸部５３が形成されている形状で、円筒状の連結部５０の軸方向全長に亙り形成されているので、第１実施形態と同様に軸方向に剛性を有し、内周側に密封対象側Ａから軸２を挿通したときのシールリップ４０の位置ズレやメクレを防止することが可能になると共に、径方向には柔軟性を有し、軸２が大きく偏心した場合であってもシールリップ４０の追随性を確保することが可能になる。   In the sealing device according to the second embodiment having the above-described configuration, the cross-sectional shape of the connecting portion 50 is a shape in which the convex portions 53 are formed at predetermined intervals on the inner peripheral surface 52, and the axial total length of the cylindrical connecting portion 50. Therefore, it has rigidity in the axial direction as in the first embodiment, and prevents the displacement and the misalignment of the seal lip 40 when the shaft 2 is inserted from the sealing target side A to the inner peripheral side. In addition, it is flexible in the radial direction, and the followability of the seal lip 40 can be ensured even when the shaft 2 is greatly decentered.

更に、連結部５０の断面形状は、内周面５２に所定間隔で凸部５３が形成されているが外周面５４は凹凸が形成されていないスムース面であるので、第１実施形態の連結部５０の断面形状である、内周面５２及び外周面５４共に円周方向に山谷が形成されている円周方向のベロー形状５１に対して、連結部５０を成形加硫するときに、内側と外側の成形型について円周方向の位置決めの必要がなく、よって、連結部５０の形成を容易にすることができる。   Furthermore, since the cross-sectional shape of the connecting portion 50 is a smooth surface in which convex portions 53 are formed at predetermined intervals on the inner peripheral surface 52 but the outer peripheral surface 54 is not formed with irregularities, the connecting portion of the first embodiment is used. When the connecting portion 50 is molded and vulcanized with respect to the bellows shape 51 in the circumferential direction in which the inner circumferential surface 52 and the outer circumferential surface 54 have a cross-sectional shape of 50, and the valleys are formed in the circumferential direction, It is not necessary to position the outer mold in the circumferential direction, and thus the connection portion 50 can be easily formed.

第３実施形態：
本発明の第３実施形態に係る密封装置１は、連結部５０の図１のＡ−Ａ方向断面形状が、図４に示す通り、第２実施形態とは逆に、外周面５４に凸部５３が円周方向に所定の間隔で形成されている形状で、円筒状の連結部５０の軸方向全長に亙り形成されている。これにより円周方向に所定の間隔で厚さが異なる形状で形成されることとなり、径方向の柔軟性が確保され、また円筒状の連結部の軸方向全長に形成されているので軸方向の剛性が確保される。なお、外周面５４に形成されている凸部５３の形状や個数等については、第２実施形態と同様に特に限定されるものではなく、使用条件により適宜選択される。また、両凸部５３間の間隔についても第２実施形態と同様である。 Third embodiment:
In the sealing device 1 according to the third embodiment of the present invention, the cross-sectional shape in the AA direction of FIG. 1 of the connecting portion 50 is a convex portion on the outer peripheral surface 54, as shown in FIG. 4, contrary to the second embodiment. 53 is formed in the circumferential direction at predetermined intervals, and is formed over the entire axial length of the cylindrical connecting portion 50. As a result, it is formed in a shape with different thicknesses at predetermined intervals in the circumferential direction, and radial flexibility is ensured, and since it is formed in the entire axial length of the cylindrical connecting portion, Rigidity is ensured. Note that the shape, the number, and the like of the convex portions 53 formed on the outer peripheral surface 54 are not particularly limited as in the second embodiment, and are appropriately selected depending on the use conditions. Further, the interval between both convex portions 53 is the same as that in the second embodiment.

この第３実施形態の場合においても、第２実施形態と同様の作用効果を奏することが可能となる。すなわち、軸方向に剛性を有しているので、内周側に密封対象側Ａから軸２を挿通したときのシールリップ４０の位置ズレやメクレを防止することが可能になると共に、径方向には柔軟性を有しているので、軸２が大きく偏心した場合であってもシールリップ４０の追随性を確保することが可能になる。更に、連結部５０の断面形状は、外周面５４に所定間隔で凸部５３が形成されているが内周面５２は凹凸が形成されていないスムース面であるので、第１実施形態の連結部５０の断面形状である、内周面５２及び外周面５４共に円周方向に山谷が形成されている円周方向のベロー形状５１に対して、連結部５０を成形加硫するときに、内側と外側の成形型について円周方向の位置決めの必要がなく、よって、連結部５０の形成を容易にすることができる。   Also in the case of the third embodiment, the same operational effects as those of the second embodiment can be achieved. In other words, since it has rigidity in the axial direction, it becomes possible to prevent the positional deviation and creaking of the seal lip 40 when the shaft 2 is inserted from the sealing target side A to the inner peripheral side, and in the radial direction. Has flexibility, it is possible to ensure the followability of the seal lip 40 even when the shaft 2 is greatly decentered. Furthermore, the cross-sectional shape of the connecting portion 50 is a smooth surface in which convex portions 53 are formed at predetermined intervals on the outer peripheral surface 54 but the inner peripheral surface 52 is not formed with irregularities. When the connecting portion 50 is molded and vulcanized with respect to the bellows shape 51 in the circumferential direction in which the inner circumferential surface 52 and the outer circumferential surface 54 have a cross-sectional shape of 50, and the valleys are formed in the circumferential direction, It is not necessary to position the outer mold in the circumferential direction, and thus the connection portion 50 can be easily formed.

本発明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 this invention 第１実施形態における図１のＡ−Ａ方向断面図AA direction sectional view of FIG. 1 in the first embodiment. 第２実施形態における図１のＡ−Ａ方向断面図AA direction sectional view of FIG. 1 in the second embodiment. 第３実施形態における図１のＡ−Ａ方向断面図AA direction sectional view of Drawing 3 in a 3rd embodiment. 従来例の密封装置の要部断面図Sectional view of the main part of a conventional sealing device 別の従来例の密封装置の要部断面図Sectional drawing of the principal part of another conventional sealing device

符号の説明Explanation of symbols

１ 密封装置
２ 軸
１０ 補強環
１１ 軸方向部
１２ 径方向部
２０ シール本体部
２１ 外周取付部
３０ 固定部
３１ ダストリップ
４０ シールリップ
４１ 先端部
５０ 連結部
５１ ベロー形状
５２，５４ 周面
５３ 凸部
Ａ 密封対象側
Ｂ 反密封対象側 DESCRIPTION OF SYMBOLS 1 Sealing device 2 Axis 10 Reinforcement ring 11 Axial direction part 12 Radial direction part 20 Seal main-body part 21 Outer peripheral attachment part 30 Fixing part 31 Dustrip 40 Seal lip 41 Tip part 50 Connection part 51 Bellows shape 52,54 Peripheral surface 53 Convex part A Sealing target side B Anti-sealing target side

Claims (2)

相対動する二部材間をシールするものであって、
一の部材に嵌合する補強環と、他の部材に摺動自在に密接するシールリップとを備える密封装置において、
前記補強環と前記シールリップとを繋ぐゴム状弾性体で成形された円筒状の連結部の断面形状が、円周方向のベロー形状で形成されていることを特徴とする密封装置。 Sealing between two members that move relative to each other,
In a sealing device comprising a reinforcing ring fitted to one member and a seal lip slidably in contact with another member,
A sealing device, wherein a cross-sectional shape of a cylindrical connecting portion formed of a rubber-like elastic body connecting the reinforcing ring and the seal lip is formed in a bellows shape in a circumferential direction. 相対動する二部材間をシールするものであって、
一の部材に嵌合する補強環と、他の部材に摺動自在に密接するシールリップとを備える密封装置において、
前記補強環と前記シールリップとを繋ぐゴム状弾性体で成形された円筒状の連結部の断面形状が、円周方向に所定の間隔で厚さが異なる形状で形成されていることを特徴とする密封装置。 Sealing between two members that move relative to each other,
In a sealing device comprising a reinforcing ring fitted to one member and a seal lip slidably in contact with another member,
A cross-sectional shape of a cylindrical connecting portion formed of a rubber-like elastic body that connects the reinforcing ring and the seal lip is formed in a shape having a different thickness at a predetermined interval in the circumferential direction. Sealing device.
JP2006282450A 2006-10-17 2006-10-17 Sealing device Withdrawn JP2008101639A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006282450A JP2008101639A (en) 2006-10-17 2006-10-17 Sealing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006282450A JP2008101639A (en) 2006-10-17 2006-10-17 Sealing device

Publications (1)

Publication Number Publication Date
JP2008101639A true JP2008101639A (en) 2008-05-01

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Family Applications (1)

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Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110318227A (en) * 2018-03-28 2019-10-11 Bsh家用电器有限公司 Sleeve and washings handle utensil

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110318227A (en) * 2018-03-28 2019-10-11 Bsh家用电器有限公司 Sleeve and washings handle utensil
CN110318227B (en) * 2018-03-28 2023-11-07 Bsh家用电器有限公司 Sleeve and laundry treatment appliance

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