CN104455253A - Piston for a hydraulic mechanism tensioning device, with a venting device - Google Patents
Piston for a hydraulic mechanism tensioning device, with a venting device Download PDFInfo
- Publication number
- CN104455253A CN104455253A CN201410487978.5A CN201410487978A CN104455253A CN 104455253 A CN104455253 A CN 104455253A CN 201410487978 A CN201410487978 A CN 201410487978A CN 104455253 A CN104455253 A CN 104455253A
- Authority
- CN
- China
- Prior art keywords
- piston
- cap
- housing
- recess
- tension device
- 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
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
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H7/0848—Means for varying tension of belts, ropes, or chains with means for impeding reverse motion
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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
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
-
- 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
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/027—Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers
-
- 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
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0802—Actuators for final output members
- F16H2007/0806—Compression coil springs
-
- 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
- F16H—GEARING
- F16H7/00—Gearings for conveying rotary motion by endless flexible members
- F16H7/08—Means for varying tension of belts, ropes, or chains
- F16H2007/0802—Actuators for final output members
- F16H2007/0812—Fluid pressure
- F16H2007/0817—Fluid pressure with means for venting unwanted gas
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Portable Nailing Machines And Staplers (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
Piston (1) for a hydraulic mechanism tensioning device of a flexible drive in an internal combustion engine comprising a pot-like housing (2) having a cavity (3) for receiving oil and one in the bottom (11) of the housing (2) arranged through bore (5), and a from outside the housing (2) on the base (11) attachable cap (4), on which bears the piston (1) to a clamping rail of the flexible drive, wherein the cap (4) on its bottom (11) of the housing (2) directed towards the inner surface (12) has at least one groove-like depression (9). According to the utility model, continuous and reliable air discharging can be ensured.
Description
Technical field
A kind of piston of the hydraulic type haulage gear tension device for the traction mechanism drive in internal-combustion engine.The housing that this piston has cylinder shape and the cap that can be inserted into from outside top, this housing is with the hollow chamber for holding oil and top.Through hole is furnished with in the top of housing.Piston can be supported on the tensioning rail of traction mechanism drive by this cap.
Background technique
Known by patent documentation EP2013515B1 according to the piston of the generic mentioned before.Document illustrates the tension equipment with piston, and piston has groove on its side and cladding element, and cladding element loads in this groove, thus 1/3rd of cladding element extend beyond piston ridge, and cladding element is resisted against on end face as cap.End face and the cladding element of piston have through hole.Two holes vertically overlap each other layout, and the air being therefore arranged in piston spills by the exhaust passage forming two through holes.The cladding element be made up of composite is loaded in metallic piston.Based on the different thermal expansion coefficient of bi-material, when there is temperature fluctuation and vibration in traction mechanism drive, firmly keep being be on the hazard to the cladding element only inserting or plug.In addition, exhaust passage or exhaust port are had problems the position in cladding element, because cladding element is determined clinging on tensioning rail, is generablely, tensioning rail covers exhaust port momently reclining a little, thus can not reliably be vented.
Summary of the invention
The present invention based on task be to provide a kind of piston for haulage gear tension device, its guarantee haulage gear tension device continuously and be vented reliably.
According to the present invention, this task solves as follows, that is, piston has cap, and this cap points to the recess internal surface at the top of housing with at least one flute profile at it.
At this, special advantage is, cap with tensioning rail recline outer surface do not have may by the exhaust passage adversely covered.Propose in the preferred design proposal of the present invention, the internal surface of cap introduces more than one recess, and these recesses intersect, therefore point of intersection communicates with the through hole in the top being arranged in housing.The recess existed is more, and unnecessary air spills faster.
What propose in of the present invention specializing is, cap have radial ring around, point to direction, the aduncate crimping of housing, and housing has narrowing portion on the outer periphery of the end of its top side, cap buckles in this narrowing portion by crimping, and maintains with preventing loss.This cap is made up of composite.Even if but when piston is different with the expansion characteristics of the material of cap, connect based on snap close, cap remains on piston with also preventing loss.
Propose in of the present invention specializing, crimping has one or more breach, and itself and at least one recess are disposed aligned.Breach in the recess of the flute profile in through hole, cap and the crimping of cap forms exhaust passage together, and unnecessary air spills piston by this exhaust passage.Based on the cap of surrounding piston top, this cap is maintained regularly by position, thus point of intersection is always positioned on through hole ideally, and for effective exhaust.
Accompanying drawing explanation
Embodiments of the present invention are shown in Fig. 1 to Fig. 2, and it is described in detail subsequently, and wherein, the present invention is not limited to this embodiment.Wherein:
Fig. 1 illustrates the cross section according to piston of the present invention; With
Fig. 2 illustrates the stereogram according to piston of the present invention.
Embodiment
Fig. 1 illustrates the cross section according to piston of the present invention, and this piston arranges and is used for using in the haulage gear tension device of hydraulic type.Piston 1 has the housing 2 of cylinder shape, and this housing is with the hollow chamber 3 for holding oil.This hollow chamber 3 is configured to hyperbaric chamber, in hyperbaric chamber, set up oil pressure.Because air has the compression property different from oil, so deriving the air be included in hollow chamber is expect.Based on this reason, in the top 11 of housing 2, be furnished with through hole, air can spill hollow chamber 3 or the hyperbaric chamber of piston 1 through this through hole.Piston 1 is made in steel or aluminum usually, and abuts on tensioning rail, and this tensioning rail is made up of composite or other lightweight material mostly.At run duration, piston 1 presses tensioning rail, thus in the contact areas, causes the wearing and tearing on tensioning rail based on harder piston material.Well known, in order to resist wearing and tearing, arrange composite element between piston 1 and tensioning rail, they should for reducing the wearing and tearing of tensioning rail.Improvement project being provided with according to the present invention provides the cap 4 that can be inserted into from housing 2 outside top 11, and piston 1 is supported on the tensioning rail of traction mechanism drive by this cap.Cap 4 points to the recess 9 internal surface 12 at the top 11 of housing 2 with at least one flute profile at it, and recess forms a part for exhaust passage.In order to cap 4 is fixed on piston 1, cap 4 constructs radial ring around, point to direction, the aduncate crimping 6 of housing 2.On the outer periphery of housing 2, at the end of its top side structure narrowing portion 10, cap 4 buckles in this narrowing portion by crimping 6, and maintains with preventing loss.In order to realize the required exhaust discussed, crimping 6 has breach 8, and breach and the recess 9 be configured in cap 4 on internal surface 12 are disposed aligned.Generate exhaust passage by this layout, exhaust passage is made up of the recess 9 of the through hole 5 in housing 2, flute profile and the breach 8 be connected on this recess.Therefore air can flow out piston 1 at any time.In order to transport more substantial air, preferred design proposal is shown in Figure 2, and this figure goes out piston 1 and cap 4 with three-dimensional icon.In this design proposal, cap 4 has the recess 9,9 ' intersected of two flute profiles, thus generates point of intersection 7, and this point of intersection directly can communicate with through hole 5 (see Fig. 1).The cap 4 buckled prevents from fixing obliquely, makes to locate point of intersection 7 ideally at any time, to guarantee reliable exhaust.
Reference numerals list
1 piston
2 housings
3 hollow chamber
4 cap
5 through holes
6 crimpings
7 point of intersection
8 breaches
9,9 ' recess
10 narrowing portions
11 tops
12 internal surfaces
Claims (5)
1. the piston (1) for the hydraulic type haulage gear tension device of the traction mechanism drive in internal-combustion engine, the housing (2) that described piston has cylinder shape and the cap (4) that can be inserted into from described housing (2) outside top (11), described housing is with the hollow chamber (3) for holding oil and the through hole (5) that is arranged in the top (11) of described housing (2), described piston (1) is supported on by described cap on the tensioning rail of described traction mechanism drive, it is characterized in that, described cap (4) has the recess (9) of at least one flute profile on the internal surface (12) at the top (11) of the described housing of the sensing of described cap (2).
2. the piston for hydraulic type haulage gear tension device according to claim 1 (1), it is characterized in that, when more than one recess (9), described recess (9,9 ') intersects, and point of intersection (7) communicate with the through hole (5) in the top (11) being arranged in described housing (2).
3. the piston for hydraulic type haulage gear tension device according to claim 1 (1), it is characterized in that, described cap (4) have radial ring around, the direction of pointing to described housing (2), aduncate crimping (6).
4. the piston for hydraulic type haulage gear tension device according to claim 3 (1), it is characterized in that, described housing (2) has narrowing portion (10) on the outer periphery of the end of the top side of described housing, described cap (4) buckles in described narrowing portion by described crimping (6), and prevents loss.
5. the piston for hydraulic type haulage gear tension device according to claim 3 (1), it is characterized in that, described crimping (6) has breach (8), and described breach and at least one recess (9,9 ') are disposed aligned.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013219074.3 | 2013-09-23 | ||
| DE201310219074 DE102013219074A1 (en) | 2013-09-23 | 2013-09-23 | Piston for a hydraulic Zugmittelspanner with a venting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104455253A true CN104455253A (en) | 2015-03-25 |
| CN104455253B CN104455253B (en) | 2018-11-13 |
Family
ID=52623546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410487978.5A Active CN104455253B (en) | 2013-09-23 | 2014-09-22 | The piston with exhaust apparatus of fluid pressure type haulage gear tensioning apparatus |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104455253B (en) |
| DE (1) | DE102013219074A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10738861B2 (en) | 2016-12-20 | 2020-08-11 | Borgwarner Inc. | Control of hydraulic tensioner tuning using hole size in piston nose |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019132093A1 (en) * | 2019-11-27 | 2021-05-27 | Iwis Motorsysteme Gmbh & Co. Kg | Hydraulic clamping device with damping cap |
| DE102019132094A1 (en) * | 2019-11-27 | 2021-05-27 | Iwis Motorsysteme Gmbh & Co. Kg | Hydraulic clamping device with pressure relief valve cap |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3816864A1 (en) * | 1988-05-18 | 1989-11-23 | Daimler Benz Ag | Tensioning device for a chain drive |
| CN1769742A (en) * | 2004-11-02 | 2006-05-10 | 株式会社椿本链索 | Hydraulic tensioner |
| CN101495776A (en) * | 2006-05-30 | 2009-07-29 | 伊威斯发动机***两合公司 | Tensioning rail with a channel device in the pressure body |
| US20090197720A1 (en) * | 2006-04-28 | 2009-08-06 | Iwis Motorsysteme Gmbh & Co. Kg | Chain tensioner with cover element |
| CN103154570A (en) * | 2011-03-09 | 2013-06-12 | 伊威斯发动机***有限责任两合公司 | Tensioning device comprising at least two ventilation elements |
-
2013
- 2013-09-23 DE DE201310219074 patent/DE102013219074A1/en not_active Withdrawn
-
2014
- 2014-09-22 CN CN201410487978.5A patent/CN104455253B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3816864A1 (en) * | 1988-05-18 | 1989-11-23 | Daimler Benz Ag | Tensioning device for a chain drive |
| CN1769742A (en) * | 2004-11-02 | 2006-05-10 | 株式会社椿本链索 | Hydraulic tensioner |
| US20090197720A1 (en) * | 2006-04-28 | 2009-08-06 | Iwis Motorsysteme Gmbh & Co. Kg | Chain tensioner with cover element |
| CN101495776A (en) * | 2006-05-30 | 2009-07-29 | 伊威斯发动机***两合公司 | Tensioning rail with a channel device in the pressure body |
| CN103154570A (en) * | 2011-03-09 | 2013-06-12 | 伊威斯发动机***有限责任两合公司 | Tensioning device comprising at least two ventilation elements |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10738861B2 (en) | 2016-12-20 | 2020-08-11 | Borgwarner Inc. | Control of hydraulic tensioner tuning using hole size in piston nose |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104455253B (en) | 2018-11-13 |
| DE102013219074A1 (en) | 2015-03-26 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: German Herzogenaurach Applicant after: Schaeffler Technologies GmbH & Co. KG Address before: German Herzogenaurach Applicant before: Schaeffler Technologies GmbH & Co. KG |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: Free format text: CORRECT: APPLICANT; FROM: SCHAEFFLER TECHNOLOGIES GMBH + CO. KG TO: SCHAEFFLER TECHNOLOGY GMBH + CO. KG |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |