WO2016087151A1 - Endkappe für ein kolben-zylinderaggregat - Google Patents
Endkappe für ein kolben-zylinderaggregat Download PDFInfo
- Publication number
- WO2016087151A1 WO2016087151A1 PCT/EP2015/075566 EP2015075566W WO2016087151A1 WO 2016087151 A1 WO2016087151 A1 WO 2016087151A1 EP 2015075566 W EP2015075566 W EP 2015075566W WO 2016087151 A1 WO2016087151 A1 WO 2016087151A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- end cap
- seal
- discharge channel
- piston
- cylinder unit
- 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.)
- Ceased
Links
Classifications
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/36—Special sealings, including sealings or guides for piston-rods
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3235—Constructional features of cylinders
- F16F9/3242—Constructional features of cylinders of cylinder ends, e.g. caps
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
Definitions
- the invention relates to an end cap for a piston-cylinder unit according to the preamble of patent claim 1.
- an end cap for a vibration damper is known.
- This end cap has a gasket that is mounted in the cap. Occurring dirt is to be dissipated by a plurality of radial channels in an outer cover side relative to an end face of the vibration damper.
- the object of the present invention is to minimize the dirt problem known from the prior art.
- the object is achieved in that the discharge channel is based on an outer top surface and on the mounting portion on the inside of the end cap.
- a channel bottom of the discharge channel is executed in the discharge deeper than a socket of the seal. This ensures that no dirt collect on a sealing lip of the seal and as a result can affect the effect of the seal.
- the at least one discharge channel is designed as an open groove on an underside of the end cap.
- the open groove leads to a total of short Outflow channel, the type of construction does not clog or can be limited only in cross section.
- the at least one discharge channel is designed as a tube within the wall of the floor.
- the structural design of the seal is simplified in that the seal is held by a sealing ring separate from the end cap on the seal.
- the end cap 1 shows an end cap 1 for a piston-cylinder unit, for example in the construction of a vibration damper.
- the end cap 1 has a bottom 3 with a through opening 5 for a piston rod, not shown, of the piston-cylinder unit.
- the bottom 3 of the end cap 1 carries in the region of the passage opening 5 a seal 7, which bears against the said piston rod.
- the through-opening 5 is stepped in the region of the bottom 3 and supports the annular seal 7 on a shoulder 9.
- a fastening ring 13 is pressed in, so that the seal 7 is axially between the shoulder 9 and the fastening ring 13 is fixed. Radially, the seal is guided by said paragraph.
- the seal 7 could also be clamped simply by means of an interference fit with the passage opening 5, so that one can dispense with a fastening ring 13.
- the piston-cylinder unit is exposed to external influences and thus dirt and moisture.
- the end cap 1 has at least one discharge channel 17, which is based on an outer top surface 19 and on the mounting portion inside on the inside of the end cap 1. On the inside is to be understood that between the discharge channel 17 and the top side 19 is an axial distance, which is formed by a part of the wall of the bottom 3.
- the outer top surface 17 is often used as a stop surface for a stop buffer and extends in an annular manner over one end of the piston-cylinder unit.
- a variant is shown, in which the discharge channel 17 is designed as an open groove.
- a base 21 and a groove bottom of the discharge channel is made deeper in the discharge direction is a base 23 of the seal 7.
- the base 23 of the seal 7 represents the region of the seal 7dar, which serves to fasten the seal 7, so performed no sealing function to the piston rod surface.
- the discharge channel 17 and the open grooves, at least one axial groove 25 connects in a mounting portion 27 of the end cap 1 at.
- the end cap 1 is centered radially to the piston-cylinder unit.
- Inside clamping surfaces 29 on the attachment portion 27 form with the piston-cylinder unit a press fit, which counteracts an axial withdrawal movement of the end cap of the piston-cylinder unit
- Occurring dirt can enter the through hole 5.
- An annular gap 31 between a sealing lip 15 and the bottom 3 allows the dirt to enter the discharge channels 17.
- the groove base 21 is deeper than the sealing lip 15, so that the protection can not collect between the sealing lip 15 and the passage opening 5, but is further moved in the direction of the discharge channels 17.
- the removal movement results already alone from the installation position of the end cap 1, in which the annular gap 31 is mounted higher than the Nutgrung 21st This downward movement of the dirt settles down into the axial grooves 25 away, so that no dirt can settle on the sealing lip 15.
- Fig. 2 shows an end cap 1, which has an identical arrangement of the seal 7 as in Fig. 1.
- the at least one discharge channel 17 is designed as a tube within the wall of the bottom 3.
- the dirt on the sealing lip 15 is discharged past into the deeper channel bottom 21, that is to say it is not stored in the region of the sealing lip 15.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Actuator (AREA)
- Closures For Containers (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201580064958.XA CN107002802B (zh) | 2014-12-02 | 2015-11-03 | 用于活塞-缸组件的端帽 |
| US15/528,601 US10309478B2 (en) | 2014-12-02 | 2015-11-03 | End cap for a piston-cylinder unit |
| KR1020177017850A KR20170090462A (ko) | 2014-12-02 | 2015-11-03 | 피스톤-실린더 유닛을 위한 단부 캡 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014224636.9A DE102014224636A1 (de) | 2014-12-02 | 2014-12-02 | Endkappe für ein Kolben-Zylinderaggregat |
| DE102014224636.9 | 2014-12-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016087151A1 true WO2016087151A1 (de) | 2016-06-09 |
Family
ID=54478739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2015/075566 Ceased WO2016087151A1 (de) | 2014-12-02 | 2015-11-03 | Endkappe für ein kolben-zylinderaggregat |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10309478B2 (de) |
| KR (1) | KR20170090462A (de) |
| CN (1) | CN107002802B (de) |
| DE (1) | DE102014224636A1 (de) |
| WO (1) | WO2016087151A1 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6435741B2 (ja) * | 2014-09-22 | 2018-12-12 | トヨタ自動車株式会社 | バンプストッパキャップ |
| GB2566332B (en) | 2017-09-12 | 2019-12-11 | Metrol Springs Ltd | Seal housing |
| DE102017223591A1 (de) * | 2017-12-21 | 2019-06-27 | Volkswagen Aktiengesellschaft | Achsdämpfer für ein Kraftfahrzeug und Kraftfahrzeug mit mindestens einem Achsdämpfer |
| DE102019203367B4 (de) * | 2019-03-12 | 2022-08-11 | Volkswagen Aktiengesellschaft | Schutzrohrführungseinrichtung für einen Schwingungsdämpfer einer Kraftfahrzeugradaufhängung |
| US11566679B2 (en) * | 2020-11-03 | 2023-01-31 | DRiV Automotive Inc. | Bumper cap for damper |
| JP7450797B2 (ja) * | 2021-02-24 | 2024-03-15 | 日立Astemo株式会社 | バンパキャップおよび緩衝器 |
| DE102023209920A1 (de) * | 2023-10-11 | 2025-04-17 | Zf Friedrichshafen Ag | Abdeckkappe sowie Schwingungsdämpfer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2237356A (en) * | 1989-09-29 | 1991-05-01 | Atsugi Unisia Corp | Hydraulic shock absorber |
| JP2008215457A (ja) * | 2007-03-02 | 2008-09-18 | Toyota Motor Corp | ショックアブソーバ |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7834927U1 (de) * | 1978-11-24 | 1979-03-29 | Fichtel & Sachs Ag, 8720 Schweinfurt | Stoßdämpfer oder Federbein mit einer Gummihohlfeder |
| US4828232A (en) * | 1983-11-14 | 1989-05-09 | General Motors Corporation | Vehicle air suspension strut with compliant cover plate assembly |
| JPH1163225A (ja) * | 1997-08-08 | 1999-03-05 | Yamaha Motor Co Ltd | ピストンリング |
| DE10008140C1 (de) * | 2000-02-22 | 2001-05-23 | Mannesmann Sachs Ag | Schutzrohr für ein Kolben-Zylinderaggregat |
| DE10138196C1 (de) * | 2001-08-03 | 2002-10-31 | Zf Sachs Ag | Schwingungsdäpfer mit Zusatzkolbenstangendichtung |
| JP5206965B2 (ja) * | 2008-01-31 | 2013-06-12 | 日立オートモティブシステムズ株式会社 | 流体圧緩衝器 |
| JP2009222223A (ja) * | 2008-02-22 | 2009-10-01 | Showa Corp | 油圧緩衝器のバンプキャップ |
| US8991572B2 (en) * | 2009-09-03 | 2015-03-31 | GM Global Technology Operations LLC | Leak-proof damper having self-diagnostic feature |
| KR101337583B1 (ko) * | 2011-12-12 | 2013-12-06 | 주식회사 만도 | 쇽업소버의 더스트 씰 구조 |
| JP6435741B2 (ja) * | 2014-09-22 | 2018-12-12 | トヨタ自動車株式会社 | バンプストッパキャップ |
-
2014
- 2014-12-02 DE DE102014224636.9A patent/DE102014224636A1/de not_active Withdrawn
-
2015
- 2015-11-03 KR KR1020177017850A patent/KR20170090462A/ko not_active Withdrawn
- 2015-11-03 US US15/528,601 patent/US10309478B2/en not_active Expired - Fee Related
- 2015-11-03 CN CN201580064958.XA patent/CN107002802B/zh not_active Expired - Fee Related
- 2015-11-03 WO PCT/EP2015/075566 patent/WO2016087151A1/de not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2237356A (en) * | 1989-09-29 | 1991-05-01 | Atsugi Unisia Corp | Hydraulic shock absorber |
| JP2008215457A (ja) * | 2007-03-02 | 2008-09-18 | Toyota Motor Corp | ショックアブソーバ |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102014224636A1 (de) | 2016-06-02 |
| CN107002802A (zh) | 2017-08-01 |
| KR20170090462A (ko) | 2017-08-07 |
| US20170261062A1 (en) | 2017-09-14 |
| CN107002802B (zh) | 2019-05-31 |
| US10309478B2 (en) | 2019-06-04 |
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