WO2012077403A1 - Sealing device - Google Patents
Sealing device Download PDFInfo
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- WO2012077403A1 WO2012077403A1 PCT/JP2011/073171 JP2011073171W WO2012077403A1 WO 2012077403 A1 WO2012077403 A1 WO 2012077403A1 JP 2011073171 W JP2011073171 W JP 2011073171W WO 2012077403 A1 WO2012077403 A1 WO 2012077403A1
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- WIPO (PCT)
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- sealing device
- sealing
- housing
- cylindrical portion
- sleeve member
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
- F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
- F16J15/3256—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals
Definitions
- the present invention is used, for example, in shaft seals of agricultural machinery, construction machinery, etc., where the environment (atmosphere side) such as muddy water is severe, and prevents intrusion of muddy water and dust from the outside, and also prevents leakage of internal seal objects.
- the present invention relates to a sealing device.
- this type of sealing device has a structure shown in FIG. (Patent Document 1) That is, a sealing device that seals a gap between the housing 100 and the rotary shaft 200 extending through the housing 100, and includes a seal member 300 held on the housing 100 side and a metal held on the rotary shaft 200 side. And a sleeve member 400 made of a material.
- the sleeve member 400 includes an inner cylindrical portion 410 that is fitted to the outer peripheral surface of the rotary shaft 200, and a flange portion 420 that extends radially outward from one axial end (right end in the drawing) of the inner cylindrical portion 410.
- the seal member 300 includes a metal-made reinforcing ring 310 including a cylindrical portion 3110 fitted into the housing 100 and a flange-shaped portion 3120 extending radially inward from one axial end of the cylindrical portion 3110. And a lip portion made of a rubber-like elastic material formed integrally with the flange-like portion 3120.
- the lip portion extends toward the inner side (left side in the figure), and includes a radial lip portion 320 that is in sliding contact with the outer peripheral surface of the inner cylindrical portion 410 and an end surface lip 330 that is in sliding contact with the flange portion 420. .
- the gap between the radial end of the flange 420 and the inner peripheral surface of the cylindrical portion 3130 provided on the seal member 300 constitutes a labyrinth gap X that is a narrow gap.
- this type of sealing device when used for a long time in shaft seals of agricultural machinery, construction machinery, etc., where the environment (atmosphere side) such as muddy water is severe, allows the entry of muddy water and dust from the outside. Evoked. Particularly, since the length of the labyrinth gap X is short and is open in the axial direction, it is difficult to prevent the intrusion of muddy water and dust from the outside. In addition, since the shape of the end face lip 330 is also an annular small protrusion shape, the problem that the sealing function is impaired due to displacement in the thrust direction is caused. Furthermore, since the axial width of the entire sealing device is designed to protrude greatly from the axial width of the inner cylindrical portion 410 of the sleeve member 400, the entire sealing device has to be large.
- the present invention is not limited to muddy water from the outside even if it is used for a long time in a shaft seal part of agricultural machinery, construction machinery, etc., where the environment (atmosphere side) is difficult in a limited space. It is an object to provide a sealing device that can effectively prevent the intrusion of dust and dust.
- the present invention provides a sealing device for sealing a gap between a housing and a rotary shaft extending through the housing, the sealing member held on the housing side, A sleeve member made of a metal material held on the rotating shaft side and a disk-shaped protective ring held on the sealing member side, and the sleeve member is fitted inside the outer peripheral surface of the rotating shaft
- the cylindrical portion includes a flange portion extending radially outward from one axial end of the inner cylindrical portion, and the sealing member includes a cylindrical portion fitted to the housing side, and one axial end of the cylindrical portion.
- a metal-made reinforcing ring composed of an inner flange-like portion extending radially inward from the inner flange portion and an outer flange-like portion extending radially outward from the other axial end of the cylindrical portion; and the inner flange-like portion integrally formed
- the inner cylindrical part made of rubber-like elastic material
- a radial lip portion in sealing contact with the peripheral surface and an end surface lip portion in elastic contact with the flange portion, wherein the protective ring is radially outer end portion of the outer flange portion by a radial end portion thereof. Is fixed by caulking, and a narrow gap is formed between the collar and the protective ring.
- the present invention has the following effects. According to the sealing device of the invention described in claim 1, even in a limited space, even if it is used for a long time in a shaft sealing part of agricultural machinery, construction machinery, etc., where the environment (atmosphere side) such as muddy water is severe, from the outside Can effectively prevent the intrusion of muddy water and dust. Further, according to the sealing device of the invention described in claim 2, since it is not necessary to cover the rubber-like elastic material or the like, the manufacturing cost can be kept low.
- the sealing device of the invention described in claim 3 in order to effectively prevent intrusion of muddy water and dust into the inside, it is possible to prevent damage to the main lip and effectively prevent leakage of the internal seal object. . Moreover, according to the sealing device of the invention described in claim 4, the whole sealing device can be made compact.
- Sectional drawing of the sealing device which concerns on this invention Sectional drawing of the sealing device which concerns on a prior art.
- the sealing device seals the gap between the housing 1 and the rotary shaft 2 extending through the housing 1, and includes a seal member 3 held on the housing 1 side, and the rotary shaft 2 side.
- the sleeve member 4 made of a metal material held on the seal member 3 and the protective ring 5 held on the seal member 3 side.
- the sleeve member 4 includes an inner cylindrical portion 41 that is fitted to the outer peripheral surface of the rotating shaft 2 and a flange portion 42 that extends radially outward from one axial end of the inner cylindrical portion 41.
- the seal member 3 includes a cylindrical portion 311 fitted to the housing 1 side, an inner flange portion 312 extending radially inward from one axial end of the cylindrical portion 311, and the other axial end of the cylindrical portion 311.
- a metal-made reinforcing ring 31 composed of an outer flange 313 extending radially outward from the outer circumferential surface of the inner cylindrical portion 41 made of a rubber-like elastic material integrally formed with the inner flange 312.
- the radial lip part 32 and the end face lip part 34 in elastic contact with the collar part 42 are provided.
- the disk-shaped protection ring 5 has its radially outer end portion 51 fixed by crimping with the radial end portion 3131 of the outer flange portion 313, and is integrally held on the seal member 3 side.
- a narrow gap X is formed between the collar portion 42 and the protective ring 5 to effectively prevent the intrusion of muddy water and dust from the outside.
- the manufacturing cost can be kept low.
- end surface lip portion 34 extends radially outward, and the two end surface lip portions 34 are in elastic contact with the flange portion 42 of the sleeve member 4.
- the number of the end face lip portions 34 may be one or more. However, the presence of two or more end lip portions 34 can further improve dust resistance. Further, since the end face lip portion 34 has a lip shape, the sealing function is not impaired by displacement in the thrust direction.
- the radial lip portion 32 elastically contacts the inner cylindrical portion 41 of the sleeve member 4 to prevent the fluid existing inside (left side in the figure) from flowing out.
- a garter spring 321 that presses the radial lip portion 32 against the outer peripheral surface of the inner cylindrical portion 41 is disposed on the outer peripheral side of the radial lip portion 32. As a result, a good tension of the radial lip portion 32 can be maintained for a long time.
- the axial width of the entire sealing member is designed to be within the axial width of the inner cylindrical portion 41 of the sleeve member 4. That is, the flange portion 42 of the sleeve member 4 is displaced inward (left side in the drawing) via the bent portion 421 in the vicinity of the joint portion with the inner cylindrical portion 41, and the protective ring 5 is accommodated in the displaced region. It is configured. As a result, the entire sealing device can be made compact.
- the present invention is not limited to the best mode for carrying out the invention described above, and various other configurations can be adopted without departing from the gist of the present invention.
- It is suitably used as a sealing device that seals shaft seals of tillage machines and construction machines that are used under severe conditions such as muddy water on the atmosphere side.
Abstract
The purpose of the present invention is to provide a sealing device which can prevent the invasion of muddy water or dusts from outside effectively in a limited space even when used at shaft seal parts of farm machines, construction machines and the like, which are usually exposed to severe external (atmosphere-side) environments such as muddy water, for a long period.
Thus, provided is a sealing device for sealing a gap between a housing and a rotation axis which extends through the housing, which comprises a sealing member that is held on the housing side, a sleeve member that is held on the rotation axis side and is composed of a metallic material, and a protection ring that is held on the sealing member side, wherein a narrow gap is formed between a guard part of the sleeve member and the protection ring.
Description
本発明は、例えば泥水等外部（大気側）の環境が厳しい農機、建機等の軸封部に用いられ、外部からの泥水やダストの浸入を防止すると共に、内部シール対象物の漏れを防止する密封装置に関するものである。
The present invention is used, for example, in shaft seals of agricultural machinery, construction machinery, etc., where the environment (atmosphere side) such as muddy water is severe, and prevents intrusion of muddy water and dust from the outside, and also prevents leakage of internal seal objects. The present invention relates to a sealing device.
従来、この種密封装置としては、図２に示す構造のものが知られている。（特許文献１）
すなわち、ハウジング１００と、このハウジング１００を貫通して伸びる回転軸２００との間隙をシールする密封装置であって、ハウジング１００側に保持されたシール部材３００と、回転軸２００側に保持された金属材製のスリーブ部材４００とにより構成されている。 Conventionally, this type of sealing device has a structure shown in FIG. (Patent Document 1)
That is, a sealing device that seals a gap between thehousing 100 and the rotary shaft 200 extending through the housing 100, and includes a seal member 300 held on the housing 100 side and a metal held on the rotary shaft 200 side. And a sleeve member 400 made of a material.
すなわち、ハウジング１００と、このハウジング１００を貫通して伸びる回転軸２００との間隙をシールする密封装置であって、ハウジング１００側に保持されたシール部材３００と、回転軸２００側に保持された金属材製のスリーブ部材４００とにより構成されている。 Conventionally, this type of sealing device has a structure shown in FIG. (Patent Document 1)
That is, a sealing device that seals a gap between the
そして、スリーブ部材４００は、回転軸２００の外周面に嵌合される内側円筒部４１０と、この内側円筒部４１０の軸方向一端（図上右端）から径方向外側に伸びる鍔部４２０とを備えている。
また、シール部材３００は、ハウジング１００に嵌合される筒状部３１１０と、この筒状部３１１０の軸方向一端から径方向内側伸びる鍔状部３１２０とより成る金属材製の補強環３１０と、鍔状部３１２０に一体成形されたゴム状弾性材製のリップ部とを備えている。 Thesleeve member 400 includes an inner cylindrical portion 410 that is fitted to the outer peripheral surface of the rotary shaft 200, and a flange portion 420 that extends radially outward from one axial end (right end in the drawing) of the inner cylindrical portion 410. ing.
Further, theseal member 300 includes a metal-made reinforcing ring 310 including a cylindrical portion 3110 fitted into the housing 100 and a flange-shaped portion 3120 extending radially inward from one axial end of the cylindrical portion 3110. And a lip portion made of a rubber-like elastic material formed integrally with the flange-like portion 3120.
また、シール部材３００は、ハウジング１００に嵌合される筒状部３１１０と、この筒状部３１１０の軸方向一端から径方向内側伸びる鍔状部３１２０とより成る金属材製の補強環３１０と、鍔状部３１２０に一体成形されたゴム状弾性材製のリップ部とを備えている。 The
Further, the
そして、このリップ部は、内部側（図上左側）に向かって伸びると共に、内側円筒部４１０の外周面と摺接するラジアルリップ部３２０と、鍔部４２０と摺接する端面リップ３３０とを備えている。
また、鍔部４２０の径方向端部と、シール部材３００に設けた筒状部３１３０の内周面との間隙は、狭間隙であるラビリンス間隙Ｘを構成している。 The lip portion extends toward the inner side (left side in the figure), and includes aradial lip portion 320 that is in sliding contact with the outer peripheral surface of the inner cylindrical portion 410 and an end surface lip 330 that is in sliding contact with the flange portion 420. .
The gap between the radial end of theflange 420 and the inner peripheral surface of the cylindrical portion 3130 provided on the seal member 300 constitutes a labyrinth gap X that is a narrow gap.
また、鍔部４２０の径方向端部と、シール部材３００に設けた筒状部３１３０の内周面との間隙は、狭間隙であるラビリンス間隙Ｘを構成している。 The lip portion extends toward the inner side (left side in the figure), and includes a
The gap between the radial end of the
しかし、この種密封装置は、泥水等外部（大気側）の環境が厳しい農機、建機等の軸封部に、長期間用いると、外部からの泥水やダストの浸入を許容してしまう問題を惹起した。
特に、ラビリンス間隙Ｘが存在する長さが短く、軸方向に開放されている為、外部からの泥水やダストの浸入を阻止することは困難であった。
また、端面リップ３３０の形状も、環状の小突起形状で有る為、スラスト方向の変位により、シール機能が損なわれる問題を惹起した。
更に、密封装置全体の軸方向幅が、スリーブ部材４００の内側円筒部４１０の軸方向幅から大きくはみ出す設計となっている為、密封装置全体が大きく成らざるを得なかった。 However, this type of sealing device, when used for a long time in shaft seals of agricultural machinery, construction machinery, etc., where the environment (atmosphere side) such as muddy water is severe, allows the entry of muddy water and dust from the outside. Evoked.
Particularly, since the length of the labyrinth gap X is short and is open in the axial direction, it is difficult to prevent the intrusion of muddy water and dust from the outside.
In addition, since the shape of theend face lip 330 is also an annular small protrusion shape, the problem that the sealing function is impaired due to displacement in the thrust direction is caused.
Furthermore, since the axial width of the entire sealing device is designed to protrude greatly from the axial width of the innercylindrical portion 410 of the sleeve member 400, the entire sealing device has to be large.
特に、ラビリンス間隙Ｘが存在する長さが短く、軸方向に開放されている為、外部からの泥水やダストの浸入を阻止することは困難であった。
また、端面リップ３３０の形状も、環状の小突起形状で有る為、スラスト方向の変位により、シール機能が損なわれる問題を惹起した。
更に、密封装置全体の軸方向幅が、スリーブ部材４００の内側円筒部４１０の軸方向幅から大きくはみ出す設計となっている為、密封装置全体が大きく成らざるを得なかった。 However, this type of sealing device, when used for a long time in shaft seals of agricultural machinery, construction machinery, etc., where the environment (atmosphere side) such as muddy water is severe, allows the entry of muddy water and dust from the outside. Evoked.
Particularly, since the length of the labyrinth gap X is short and is open in the axial direction, it is difficult to prevent the intrusion of muddy water and dust from the outside.
In addition, since the shape of the
Furthermore, since the axial width of the entire sealing device is designed to protrude greatly from the axial width of the inner
そこで、本発明が前述の状況に鑑み、限られたスペースにおいて、泥水等外部（大気側）の環境が厳しい農機、建機等の軸封部に、長期間用いたとしても、外部からの泥水やダストの浸入を効果的に阻止出来る密封装置を提供することを目的としている。
Therefore, in view of the above-mentioned situation, the present invention is not limited to muddy water from the outside even if it is used for a long time in a shaft seal part of agricultural machinery, construction machinery, etc., where the environment (atmosphere side) is difficult in a limited space. It is an object to provide a sealing device that can effectively prevent the intrusion of dust and dust.
上記目的を達成するために本発明にあっては、ハウジングと、前記ハウジングを貫通して伸びる回転軸との間隙をシールする密封装置であって、前記ハウジング側に保持されたシール部材と、前記回転軸側に保持された金属材製のスリーブ部材と、前記シール部材側に保持された円盤状の保護環とにより構成され、前記スリーブ部材は、前記回転軸の外周面に嵌合される内側円筒部と、前記内側円筒部の軸方向一端から径方向外側に伸びる鍔部とより成り、前記シール部材は、前記ハウジング側に嵌合される筒状部と、前記筒状部の軸方向一端から径方向内側伸びる内側鍔状部と、前記筒状部の軸方向他端から径方向外側伸びる外側鍔状部とより成る金属材製の補強環と、前記内側鍔状部に一体成形されたゴム状弾性材製の前記内側円筒部外周面と密封接触しているラジアルリップ部及び前記鍔部と弾性接触している端面リップ部とより成り、前記保護環は、前記外側鍔状部の径方向端部によりその径方向外端部がカシメ固定され、前記鍔部と前記保護環との間で狭間隙を形成していることを特徴とする。
In order to achieve the above object, the present invention provides a sealing device for sealing a gap between a housing and a rotary shaft extending through the housing, the sealing member held on the housing side, A sleeve member made of a metal material held on the rotating shaft side and a disk-shaped protective ring held on the sealing member side, and the sleeve member is fitted inside the outer peripheral surface of the rotating shaft The cylindrical portion includes a flange portion extending radially outward from one axial end of the inner cylindrical portion, and the sealing member includes a cylindrical portion fitted to the housing side, and one axial end of the cylindrical portion. A metal-made reinforcing ring composed of an inner flange-like portion extending radially inward from the inner flange portion and an outer flange-like portion extending radially outward from the other axial end of the cylindrical portion; and the inner flange-like portion integrally formed The inner cylindrical part made of rubber-like elastic material A radial lip portion in sealing contact with the peripheral surface and an end surface lip portion in elastic contact with the flange portion, wherein the protective ring is radially outer end portion of the outer flange portion by a radial end portion thereof. Is fixed by caulking, and a narrow gap is formed between the collar and the protective ring.
本発明は、以下に記載されるような効果を奏する。
請求項１記載の発明の密封装置によれば、限られたスペースにおいて、泥水等外部（大気側）の環境が厳しい農機、建機等の軸封部に、長期間用いたとしても、外部からの泥水やダストの浸入を効果的に阻止出来る。
また、請求項２記載の発明の密封装置によれば、ゴム状弾性材等を被覆する必要が無い為、製造コストを低く押えることが出来る。 The present invention has the following effects.
According to the sealing device of the invention described in claim 1, even in a limited space, even if it is used for a long time in a shaft sealing part of agricultural machinery, construction machinery, etc., where the environment (atmosphere side) such as muddy water is severe, from the outside Can effectively prevent the intrusion of muddy water and dust.
Further, according to the sealing device of the invention described inclaim 2, since it is not necessary to cover the rubber-like elastic material or the like, the manufacturing cost can be kept low.
請求項１記載の発明の密封装置によれば、限られたスペースにおいて、泥水等外部（大気側）の環境が厳しい農機、建機等の軸封部に、長期間用いたとしても、外部からの泥水やダストの浸入を効果的に阻止出来る。
また、請求項２記載の発明の密封装置によれば、ゴム状弾性材等を被覆する必要が無い為、製造コストを低く押えることが出来る。 The present invention has the following effects.
According to the sealing device of the invention described in claim 1, even in a limited space, even if it is used for a long time in a shaft sealing part of agricultural machinery, construction machinery, etc., where the environment (atmosphere side) such as muddy water is severe, from the outside Can effectively prevent the intrusion of muddy water and dust.
Further, according to the sealing device of the invention described in
また、請求項３記載の発明の密封装置によれば、泥水やダストの内側への浸入を効果的に阻止する為、メインリップの損傷を防ぎ、内部シール対象物の漏出を効果的に防止出来る。
また、請求項４記載の発明の密封装置によれば、密封装置全体をコンパクトに出来る。 Further, according to the sealing device of the invention described in claim 3, in order to effectively prevent intrusion of muddy water and dust into the inside, it is possible to prevent damage to the main lip and effectively prevent leakage of the internal seal object. .
Moreover, according to the sealing device of the invention described inclaim 4, the whole sealing device can be made compact.
また、請求項４記載の発明の密封装置によれば、密封装置全体をコンパクトに出来る。 Further, according to the sealing device of the invention described in claim 3, in order to effectively prevent intrusion of muddy water and dust into the inside, it is possible to prevent damage to the main lip and effectively prevent leakage of the internal seal object. .
Moreover, according to the sealing device of the invention described in
以下、本発明を実施するための最良の形態について説明する。
図１に基づき発明を実施するための形態について説明する。 Hereinafter, the best mode for carrying out the present invention will be described.
An embodiment for carrying out the invention will be described with reference to FIG.
図１に基づき発明を実施するための形態について説明する。 Hereinafter, the best mode for carrying out the present invention will be described.
An embodiment for carrying out the invention will be described with reference to FIG.
本発明に係る密封装置は、ハウジング１と、このハウジング１を貫通して伸びる回転軸２との間隙をシールするものであって、ハウジング１側に保持されたシール部材３と、回転軸２側に保持された金属材製のスリーブ部材４と、シール部材３側に保持されている保護環５とにより構成されている。
このスリーブ部材４は、回転軸２の外周面に嵌合される内側円筒部４１と、内側円筒部４１の軸方向一端から径方向外側に伸びる鍔部４２とを備えている。 The sealing device according to the present invention seals the gap between the housing 1 and therotary shaft 2 extending through the housing 1, and includes a seal member 3 held on the housing 1 side, and the rotary shaft 2 side. The sleeve member 4 made of a metal material held on the seal member 3 and the protective ring 5 held on the seal member 3 side.
Thesleeve member 4 includes an inner cylindrical portion 41 that is fitted to the outer peripheral surface of the rotating shaft 2 and a flange portion 42 that extends radially outward from one axial end of the inner cylindrical portion 41.
このスリーブ部材４は、回転軸２の外周面に嵌合される内側円筒部４１と、内側円筒部４１の軸方向一端から径方向外側に伸びる鍔部４２とを備えている。 The sealing device according to the present invention seals the gap between the housing 1 and the
The
また、シール部材３は、ハウジング１側に嵌合される筒状部３１１と、筒状部３１１の軸方向一端から径方向内側伸びる内側鍔状部３１２と、筒状部３１１の軸方向他端から径方向外側伸びる外側鍔状部３１３とより成る金属材製の補強環３１と、内側鍔状部３１２に一体成形されたゴム状弾性材製の内側円筒部４１外周面と密封接触しているラジアルリップ部３２及び鍔部４２と弾性接触している端面リップ部３４とを備えている。
The seal member 3 includes a cylindrical portion 311 fitted to the housing 1 side, an inner flange portion 312 extending radially inward from one axial end of the cylindrical portion 311, and the other axial end of the cylindrical portion 311. A metal-made reinforcing ring 31 composed of an outer flange 313 extending radially outward from the outer circumferential surface of the inner cylindrical portion 41 made of a rubber-like elastic material integrally formed with the inner flange 312. The radial lip part 32 and the end face lip part 34 in elastic contact with the collar part 42 are provided.
更に、円盤状の保護環５は、外側鍔状部３１３の径方向端部３１３１によりその径方向外端部５１がカシメ固定され、シール部材３側に一体的に保持されている。
Further, the disk-shaped protection ring 5 has its radially outer end portion 51 fixed by crimping with the radial end portion 3131 of the outer flange portion 313, and is integrally held on the seal member 3 side.
この様な構成とする事により、鍔部４２と保護環５との間で狭間隙Ｘを形成して、外部からの泥水やダスト等の浸入を効果的に防止している。
By adopting such a configuration, a narrow gap X is formed between the collar portion 42 and the protective ring 5 to effectively prevent the intrusion of muddy water and dust from the outside.
また、スリーブ部材４は、メッキ鋼板等の耐腐食性処理が施されており、スリーブ部材４に、ゴム状弾性材等を被覆する必要が無い為、製造コストを低く押えることが出来る。
Further, since the sleeve member 4 is subjected to a corrosion resistance treatment such as a plated steel plate and it is not necessary to coat the sleeve member 4 with a rubber-like elastic material or the like, the manufacturing cost can be kept low.
また、端面リップ部３４は、径方向外方に伸びると共に、２枚の端面リップ部３４がスリーブ部材４の鍔部４２に弾性接触している。
端面リップ部３４の枚数は、１枚以上存在すれば良いが、２枚以上存在させる事により、耐ダスト性をより高める事が出来る。
また、端面リップ部３４がリップ形状を呈している為、スラスト方向の変位により、シール機能が損なわれる事が無い。 Further, the endsurface lip portion 34 extends radially outward, and the two end surface lip portions 34 are in elastic contact with the flange portion 42 of the sleeve member 4.
The number of the endface lip portions 34 may be one or more. However, the presence of two or more end lip portions 34 can further improve dust resistance.
Further, since the endface lip portion 34 has a lip shape, the sealing function is not impaired by displacement in the thrust direction.
端面リップ部３４の枚数は、１枚以上存在すれば良いが、２枚以上存在させる事により、耐ダスト性をより高める事が出来る。
また、端面リップ部３４がリップ形状を呈している為、スラスト方向の変位により、シール機能が損なわれる事が無い。 Further, the end
The number of the end
Further, since the end
また、ラジアルリップ部３２は、スリーブ部材４の内側円筒部４１に弾性接触して、内部（図上左側）に存在する流体の流出を防止している。
また、ラジアルリップ部３２の外周側には、ラジアルリップ部３２を内側円筒部４１の外周面に押圧するガータースプリング３２１が配置されている。
この事により、ラジアルリップ部３２の良好な緊迫力が、長期間維持出来る。 Further, theradial lip portion 32 elastically contacts the inner cylindrical portion 41 of the sleeve member 4 to prevent the fluid existing inside (left side in the figure) from flowing out.
Agarter spring 321 that presses the radial lip portion 32 against the outer peripheral surface of the inner cylindrical portion 41 is disposed on the outer peripheral side of the radial lip portion 32.
As a result, a good tension of theradial lip portion 32 can be maintained for a long time.
また、ラジアルリップ部３２の外周側には、ラジアルリップ部３２を内側円筒部４１の外周面に押圧するガータースプリング３２１が配置されている。
この事により、ラジアルリップ部３２の良好な緊迫力が、長期間維持出来る。 Further, the
A
As a result, a good tension of the
更に、密封部材全体の軸方向幅が、スリーブ部材４の内側円筒部４１の軸方向幅内に収まる様に設計されている。
すなわち、スリーブ部材４の鍔部４２は、内側円筒部４１との接合部近傍で、折り曲げ部４２１を介して内部（図上左側）に変位させられ、この変位した領域内に保護環５が収まる構成としている。
この結果、密封装置全体をコンパクトに出来る。 Further, the axial width of the entire sealing member is designed to be within the axial width of the innercylindrical portion 41 of the sleeve member 4.
That is, theflange portion 42 of the sleeve member 4 is displaced inward (left side in the drawing) via the bent portion 421 in the vicinity of the joint portion with the inner cylindrical portion 41, and the protective ring 5 is accommodated in the displaced region. It is configured.
As a result, the entire sealing device can be made compact.
すなわち、スリーブ部材４の鍔部４２は、内側円筒部４１との接合部近傍で、折り曲げ部４２１を介して内部（図上左側）に変位させられ、この変位した領域内に保護環５が収まる構成としている。
この結果、密封装置全体をコンパクトに出来る。 Further, the axial width of the entire sealing member is designed to be within the axial width of the inner
That is, the
As a result, the entire sealing device can be made compact.
また、本発明は上述の発明を実施するための最良の形態に限らず本発明の要旨を逸脱することなくその他種々の構成を採り得ることはもちろんである。
Further, the present invention is not limited to the best mode for carrying out the invention described above, and various other configurations can be adopted without departing from the gist of the present invention.
大気側が泥水等の厳しい条件で使用される耕耘機、建設機械等の軸封部をシールする密封装置として好適に用いられる。
It is suitably used as a sealing device that seals shaft seals of tillage machines and construction machines that are used under severe conditions such as muddy water on the atmosphere side.
１ ハウジング
２ 軸
３ シール部材
４ スリーブ部材
５ 保護環
３１ 補強環
３２ ラジアルリップ部
３４ 端面リップ部
４１ 内側円筒部
４２ 鍔部
３１１筒状部
３１２内側鍔状部
３１３外側鍔状部
３２１ガータースプリング DESCRIPTION OF SYMBOLS 1Housing 2 Shaft 3 Seal member 4 Sleeve member 5 Protective ring 31 Reinforcement ring 32 Radial lip part 34 End surface lip part 41 Inner cylindrical part 42 ridge part 311 cylindrical part 312 inner ridge part 313 outer flange part 321 garter spring
２ 軸
３ シール部材
４ スリーブ部材
５ 保護環
３１ 補強環
３２ ラジアルリップ部
３４ 端面リップ部
４１ 内側円筒部
４２ 鍔部
３１１筒状部
３１２内側鍔状部
３１３外側鍔状部
３２１ガータースプリング DESCRIPTION OF SYMBOLS 1
Claims (4)
- ハウジング（１）と、前記ハウジング（１）を貫通して伸びる回転軸（２）との間隙をシールする密封装置であって、前記ハウジング（１）側に保持されたシール部材（３）と、前記回転軸（２）側に保持された金属材製のスリーブ部材（４）と、前記シール部材（３）側に保持された円盤状の保護環（５）とにより構成され、前記スリーブ部材（４）は、前記回転軸（２）の外周面に嵌合される内側円筒部（４１）と、前記内側円筒部（４１）の軸方向一端から径方向外側に伸びる鍔部（４２）とより成り、前記シール部材（３）は、前記ハウジング（１）側に嵌合される筒状部（３１１）と、前記筒状部（３１１）の軸方向一端から径方向内側伸びる内側鍔状部（３１２）と、前記筒状部（３１１）の軸方向他端から径方向外側伸びる外側鍔状部（３１３）とより成る金属材製の補強環（３１）と、前記内側鍔状部（３１２）に一体成形されたゴム状弾性材製の前記内側円筒部（４１）外周面と密封接触しているラジアルリップ部（３２）及び前記鍔部（４２）と弾性接触している端面リップ部（３４）とより成り、前記保護環（５）は、前記外側鍔状部（３１３）の径方向端部（３１３１）によりその径方向外端部（５１）がカシメ固定され、前記鍔部（４２）と前記保護環（５）との間で狭間隙（Ｘ）を形成していることを特徴とする密封装置。 A sealing device for sealing a gap between a housing (1) and a rotating shaft (2) extending through the housing (1), the sealing member (3) held on the housing (1) side; The sleeve member (4) made of a metal material held on the rotating shaft (2) side, and a disk-shaped protective ring (5) held on the seal member (3) side, the sleeve member ( 4) includes an inner cylindrical portion (41) fitted to the outer peripheral surface of the rotating shaft (2), and a flange portion (42) extending radially outward from one axial end of the inner cylindrical portion (41). The seal member (3) includes a cylindrical portion (311) fitted to the housing (1) side, and an inner flange-shaped portion (inner side) extending radially inward from one axial end of the cylindrical portion (311). 312) and radially outward from the other axial end of the tubular portion (311). A metal-made reinforcing ring (31) composed of a side hook-shaped portion (313), and an outer peripheral surface of the inner cylindrical portion (41) made of a rubber-like elastic material formed integrally with the inner hook-shaped portion (312); It comprises a radial lip portion (32) in sealing contact and an end surface lip portion (34) in elastic contact with the flange portion (42), and the protective ring (5) is formed on the outer flange portion (313). The radially outer end portion (51) is caulked and fixed by the radial end portion (3131) of the rod, and a narrow gap (X) is formed between the flange portion (42) and the protective ring (5). A sealing device characterized by that.
- 前記スリーブ部材（４）は、耐腐食性処理が施されていることを特徴とする請求項１記載の密封装置。 The sealing device according to claim 1, wherein the sleeve member (4) is subjected to a corrosion resistance treatment.
- 前記端面リップ部（３４）は、径方向外方に伸びると共に、複数枚存在することを特徴とする請求項１または２記載の密封装置。 The sealing device according to claim 1 or 2, wherein the end surface lip portion (34) extends radially outward and there are a plurality of the end surface lip portions (34).
- 密封部材全体の軸方向幅が、前記スリーブ部材（４）の前記内側円筒部（４１）の軸方向幅内に収まる様に設計されていることを特徴とする請求項１～３いずれか一項に記載の密封装置。 The axial width of the entire sealing member is designed to be within the axial width of the inner cylindrical portion (41) of the sleeve member (4). The sealing device according to 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011900006811U CN203176363U (en) | 2010-12-08 | 2011-10-07 | Sealing device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-273102 | 2010-12-08 | ||
| JP2010273102A JP2012122534A (en) | 2010-12-08 | 2010-12-08 | Sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012077403A1 true WO2012077403A1 (en) | 2012-06-14 |
Family
ID=46206906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2011/073171 WO2012077403A1 (en) | 2010-12-08 | 2011-10-07 | Sealing device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2012122534A (en) |
| CN (1) | CN203176363U (en) |
| WO (1) | WO2012077403A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10738918B2 (en) | 2014-10-23 | 2020-08-11 | Idex Health & Science Llc | Manifold connection assembly |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8439363B2 (en) | 2010-09-20 | 2013-05-14 | Federal-Mogul Corporation | Dynamic radial shaft seal assembly with combination dust exclusion thrust pad |
| EP2952788B1 (en) * | 2013-01-29 | 2017-10-04 | Eagle Industry Co., Ltd. | Sealing device |
| EP3627009A4 (en) * | 2017-05-18 | 2021-03-03 | Nok Corporation | Method for manufacturing sealing device, and sealing device |
| JP7252057B2 (en) * | 2019-05-22 | 2023-04-04 | ファナック株式会社 | Seal member and robot |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53101154U (en) * | 1977-01-20 | 1978-08-15 | ||
| JPS63175355U (en) * | 1986-12-11 | 1988-11-14 | ||
| JPH0320175A (en) * | 1989-06-15 | 1991-01-29 | Nok Corp | Sleeve-cum-slinger for oil seal and seal assembly thereof |
| JPH03105767U (en) * | 1990-02-16 | 1991-11-01 | ||
| WO2010061688A1 (en) * | 2008-11-28 | 2010-06-03 | Nok株式会社 | Sealing device |
-
2010
- 2010-12-08 JP JP2010273102A patent/JP2012122534A/en active Pending
-
2011
- 2011-10-07 WO PCT/JP2011/073171 patent/WO2012077403A1/en active Application Filing
- 2011-10-07 CN CN2011900006811U patent/CN203176363U/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53101154U (en) * | 1977-01-20 | 1978-08-15 | ||
| JPS63175355U (en) * | 1986-12-11 | 1988-11-14 | ||
| JPH0320175A (en) * | 1989-06-15 | 1991-01-29 | Nok Corp | Sleeve-cum-slinger for oil seal and seal assembly thereof |
| JPH03105767U (en) * | 1990-02-16 | 1991-11-01 | ||
| WO2010061688A1 (en) * | 2008-11-28 | 2010-06-03 | Nok株式会社 | Sealing device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10738918B2 (en) | 2014-10-23 | 2020-08-11 | Idex Health & Science Llc | Manifold connection assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012122534A (en) | 2012-06-28 |
| CN203176363U (en) | 2013-09-04 |
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