JP2009162332A5 - - Google Patents
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- Publication number
- JP2009162332A5 JP2009162332A5 JP2008001447A JP2008001447A JP2009162332A5 JP 2009162332 A5 JP2009162332 A5 JP 2009162332A5 JP 2008001447 A JP2008001447 A JP 2008001447A JP 2008001447 A JP2008001447 A JP 2008001447A JP 2009162332 A5 JP2009162332 A5 JP 2009162332A5
- Authority
- JP
- Japan
- Prior art keywords
- pulley
- outside
- cap
- cylindrical
- shaft body
- 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.)
- Granted
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- 238000007789 sealing Methods 0.000 claims 3
- 239000007788 liquid Substances 0.000 claims 2
- 230000005489 elastic deformation Effects 0.000 claims 1
Claims (3)
前記プーリの前記補機とは逆側のアキシャル方向端部には、キャップで塞がれるプーリ開口部が形成されており、
前記キャップには、当該キャップを隔てて定められるプーリ内部とプーリ外部とを連通する通気孔が設けられるとともに、当該通気孔には、前記プーリ外部から前記プーリ内部への液体の流通を遮断し、かつ前記プーリ内部から前記プーリ外部への気体の流通は許容する気体流通機構が設けられ、
前記気体流通機構は、前記通気孔を前記プーリ外部側から弾性部材で被う形で形成され、前記プーリ内側の内気圧上昇に伴い前記弾性部材が前記プーリ外部側に弾性変形し、当該弾性変形によって前記通気孔が前記プーリ外部に露出して前記プーリ内部の気体が前記プーリ外部に流出する逆止弁機構として形成されていることを特徴とするプーリユニット。 A rotating shaft, a cylindrical shaft body concentrically attached to the rotating shaft and attached so as to be integrally rotatable, and a cylindrical pulley concentrically attached to the rotating shaft outside the shaft body portion in a radial direction And a one-way clutch mechanism interposed between the shaft body part and the pulley,
A pulley opening that is closed with a cap is formed at the end of the pulley in the axial direction opposite to the auxiliary machine,
The cap is provided with a vent hole that communicates between the inside of the pulley and the outside of the pulley that are defined across the cap, and the vent hole blocks the flow of liquid from the outside of the pulley to the inside of the pulley, And a gas flow mechanism that allows the flow of gas from the inside of the pulley to the outside of the pulley is provided ,
The gas flow mechanism is formed so as to cover the vent hole with an elastic member from the outside of the pulley, and the elastic member elastically deforms toward the outside of the pulley as the internal air pressure inside the pulley increases, and the elastic deformation The pulley unit is formed as a check valve mechanism in which the vent hole is exposed to the outside of the pulley and the gas inside the pulley flows out to the outside of the pulley.
前記キャップは、筒状の前記シール装置に対しアキシャル方向において対向する領域を前記通気孔の非形成領域としている請求項１に記載のプーリユニット。 A cylindrical space between the shaft body portion and the pulley in which the one-way clutch mechanism is arranged communicates with the pulley opening portion in an axial direction, and on the pulley opening portion side of the cylindrical space, A cylindrical sealing device for sealing the cylindrical space is provided,
2. The pulley unit according to claim 1, wherein the cap has a region facing the cylindrical sealing device in an axial direction as a region where the air hole is not formed. 3.
前記プーリの前記補機とは逆側のアキシャル方向端部には、キャップで塞がれるプーリ開口部が形成されており、
前記キャップには、当該キャップを隔てて定められるプーリ内部とプーリ外部とを連通する通気孔が設けられるとともに、当該通気孔には、前記プーリ外部から前記プーリ内部への液体の流通を遮断し、かつ前記プーリ内部から前記プーリ外部への気体の流通は許容する気体流通機構が設けられ、
前記気体流通機構は、エアベントフィルターであることを特徴とするプーリユニット。 A rotating shaft, a cylindrical shaft body concentrically attached to the rotating shaft and attached so as to be integrally rotatable, and a cylindrical pulley concentrically attached to the rotating shaft outside the shaft body portion in a radial direction And a one-way clutch mechanism interposed between the shaft body part and the pulley,
A pulley opening that is closed with a cap is formed at the end of the pulley in the axial direction opposite to the auxiliary machine,
The cap is provided with a vent hole that communicates between the inside of the pulley and the outside of the pulley that are defined across the cap, and the vent hole blocks the flow of liquid from the outside of the pulley to the inside of the pulley, And a gas flow mechanism that allows the flow of gas from the inside of the pulley to the outside of the pulley is provided ,
The pulley unit characterized in that the gas flow mechanism is an air vent filter .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008001447A JP5045928B2 (en) | 2008-01-08 | 2008-01-08 | Pulley unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008001447A JP5045928B2 (en) | 2008-01-08 | 2008-01-08 | Pulley unit |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2009162332A JP2009162332A (en) | 2009-07-23 |
| JP2009162332A5 true JP2009162332A5 (en) | 2011-11-04 |
| JP5045928B2 JP5045928B2 (en) | 2012-10-10 |
Family
ID=40965172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008001447A Expired - Fee Related JP5045928B2 (en) | 2008-01-08 | 2008-01-08 | Pulley unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5045928B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5598436B2 (en) | 2011-07-10 | 2014-10-01 | 株式会社デンソー | Pulley lid structure for rotating electrical machine for vehicles |
| JP6290944B2 (en) * | 2015-02-20 | 2018-03-07 | 三ツ星ベルト株式会社 | Pulley structure |
| WO2016133148A1 (en) * | 2015-02-20 | 2016-08-25 | 三ツ星ベルト株式会社 | Pulley structure |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62179471A (en) * | 1986-02-03 | 1987-08-06 | ハルキー ロバーツ コーポレーション | Intratracheal cuff indicator |
| JP2003042168A (en) * | 2001-07-31 | 2003-02-13 | Nsk Ltd | Power transfer device |
| JP2003232434A (en) * | 2002-02-07 | 2003-08-22 | Nsk Ltd | Pulley device with built-in one-way clutch |
| JP2004263763A (en) * | 2003-02-28 | 2004-09-24 | Koyo Seiko Co Ltd | Pulley unit |
| JP2006038019A (en) * | 2004-07-23 | 2006-02-09 | Nabtesco Corp | Reduction gear with air vent |
-
2008
- 2008-01-08 JP JP2008001447A patent/JP5045928B2/en not_active Expired - Fee Related
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