CN104455253B - Piston with exhaust device for a hydraulic traction mechanism tensioning device - Google Patents
Piston with exhaust device for a hydraulic traction mechanism tensioning device Download PDFInfo
- Publication number
- CN104455253B CN104455253B CN201410487978.5A CN201410487978A CN104455253B CN 104455253 B CN104455253 B CN 104455253B CN 201410487978 A CN201410487978 A CN 201410487978A CN 104455253 B CN104455253 B CN 104455253B
- Authority
- CN
- China
- Prior art keywords
- piston
- cap
- shell
- traction mechanism
- fluid pressure
- 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.)
- Active
Links
- 238000002485 combustion reaction Methods 0.000 claims abstract description 3
- 238000002788 crimping Methods 0.000 claims description 10
- 239000012530 fluid Substances 0.000 claims description 8
- 238000013022 venting Methods 0.000 abstract 1
- 238000005253 cladding Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 4
- 229920002994 synthetic fiber Polymers 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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
-
- 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)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
A piston (1) with an exhaust device for a hydraulic traction mechanism tensioner of a traction mechanism drive in an internal combustion engine has a cylinder-shaped housing (2) with a hollow chamber (3) for receiving oil and a through-opening (5) arranged in the head (11) of the housing (2), and a cap (4) which can be inserted from outside the housing (2) onto the head (11) and by means of which the piston (1) is supported on a tensioning rail of the traction mechanism drive, wherein the cap (4) has at least one groove-shaped recess (9) on its inner surface (12) which points toward the head (11) of the housing (2). The piston according to the invention ensures continuous and reliable venting of the traction means tensioning device.
Description
Technical field
A kind of piston of fluid pressure type haulage gear tensioning apparatus for the traction mechanism drive in internal combustion engine.The work
The cap filled in the shell with cylinder shape and can be inserted into from hull outside on top, the shell band are useful for accommodating the hollow chamber of oil
The top and.It is arranged through hole in the top of shell.Piston can be supported on of traction mechanism drive by the cap
On tight rail.
Background technology
According to the piston for the generic mentioned before as known in patent document EP2013515B1.Document is shown with piston
Tension equipment, piston have groove and cladding element on its end side, and cladding element is fitted into the groove, to cover member
The one third of part extends beyond piston ridge, and cladding element is resisted against as cap on end face.The end face of piston and covering
Element has through hole.Two holes vertically overlap each other arrangement, therefore the air in piston can be passed through by forming two
The exhaust passage of through-hole leaks out.The cladding element made of synthetic material is loaded into metallic piston.Based on two kinds of materials
Different coefficient of thermal expansion, in the case of occurring temperature fluctuation and oscillation in traction mechanism drive, to being only inserted into or inserting
On cladding element carry out firm keeping being to be on the hazard.In addition, for exhaust passage or exhaust port in cladding element
Position for there are problems generable to be because cladding element is determined for clinging on tensioning rail, tensioning rail is pasting
Exhaust port is briefly covered in point, to cannot reliably be vented.
Invention content
The task that the present invention is based on is to provide a kind of piston for haulage gear tensioning apparatus, ensures haulage gear
The continuous and reliable exhaust of tensioning apparatus.
According to the present invention, which solves as follows, that is, there is piston cap, the cap to be directed toward shell at it
Recess portion at least one flute profile on the inner surface at top.
Here, particular advantage is, the outer surface of cap to recline with tensioning rail, which does not have, adversely to be covered
The exhaust passage of lid.It proposes, is introduced on the inner surface of cap more than one recessed in currently preferred design scheme
Portion, and these recess portions intersect, therefore crosspoint is communicated with the through hole in the top for being arranged in shell.Existing recess portion is got over
More, extra air leaks out faster.
The present invention materialization in propose, cap have radially around, be directed toward shell direction, inwardly it is curved
Bent crimping, and there is shell narrowing portion, cap to buckle into the constriction by crimping on the outer periphery of the end of its top side
In portion, and prevent from maintaining with losing.The cap is made of synthetic material.However even if in the swollen of piston and the material of cap
In the case of swollen characteristic difference, based on lock connection, cap is maintained on piston with being also prevented from loss.
It is proposed in the materialization of the present invention, crimping has one or more breaches, at least one recess portion pair
It arranges together.Breach in the recess portion of flute profile in through hole, cap and the crimping of cap forms exhaust passage together, extra
Air can pass through the exhaust passage leak out piston.Based on the cap for surrounding piston top, which is fixedly maintained by position,
To which crosspoint is always preferably located on through hole, and for being effectively vented.
Description of the drawings
Embodiments of the present invention are shown in Fig. 1 to Fig. 2, are then described in detail, wherein the present invention does not limit to
In the embodiment.Wherein：
Fig. 1 shows the cross section of piston according to the present invention；With
Fig. 2 shows the stereograms of piston according to the present invention.
Specific implementation mode
Fig. 1 shows the cross section of piston according to the present invention, and piston setting is for the haulage gear tensioning in fluid pressure type
It is used in device.There is piston 1 shell 2 of cylinder shape, the shell band to be useful for accommodating the hollow chamber 3 of oil.The hollow chamber 3 is configured to
Oil pressure is established in hyperbaric chamber in hyperbaric chamber.Because there is air the compression property different from oil, export to be included in hollow chamber
In air be desired.Based on the reason, hole is arranged through in the top of shell 2 11, air may pass through the through hole
Leak out hollow chamber 3 or the hyperbaric chamber of piston 1.Piston 1 is usually made in steel or aluminum, and is sticked on tensioning rail, the tensioning rail
It is made mostly of synthetic material or other light material.During operation, piston 1 presses tensioning rail, in contact zone
In domain, the abrasion on tensioning rail is caused based on harder piston material.Well known, in order to resist abrasion, in piston 1 and tensioning
Synthetic material element is arranged between rail, it should be for reducing the abrasion of tensioning rail.Improvement project according to the present invention is provided with
The cap 4 that can be inserted into outside shell 2 on top 11 is provided, piston 1 can be supported on traction mechanism drive by the cap
Tensioning rail on.Cap 4 recess portion 9 at least one flute profile, recess portion on the inner surface 12 that it is directed toward the top 11 of shell 2
Form a part for exhaust passage.In order to which cap 4 is fixed on piston 1, in cap 4 construction radially around, be directed toward shell
The direction of body 2, aduncate crimping 6.On the outer periphery of shell 2, narrowing portion 10 is constructed in the end of its top side,
Cap 4 is buckled by crimping 6 in the narrowing portion, and prevents from maintaining with losing.It is required in order to can be achieved to have crossed by discussion
Exhaust, crimping 6 has a breach 8, breach with construct recess portion 9 on inner surface 12 in cap 4 and be aligned.By this
Arrangement generates exhaust passage, recess portion 9 and the breach that is connected in the recess portion on of the exhaust passage by through hole 5, flute profile in shell 2
8 are constituted.Therefore air can flow out piston 1 at any time.In order to transport a greater amount of air, preferred design scheme is being schemed
It is shown in 2, which illustrates piston 1 and cap 4 with solid.In this design scheme, there are two the intersections of flute profile for the tool of cap 4
Recess portion 9,9 ', to generate crosspoint 7, which can directly communicate with through hole 5 (referring to Fig. 1).The cap 4 buckled is anti-
It only obliquely fixes so that crosspoint 7 is ideally positioned at any time, to ensure reliably to be vented.
Reference numerals list
1 piston
2 shells
3 hollow chambers
4 cap
5 through holes
6 crimpings
7 crosspoints
8 breaches
9,9 ' recess portion
10 narrowing portions
11 tops
12 inner surfaces
Claims (5)
1. a kind of piston (1) of fluid pressure type haulage gear tensioning apparatus for the traction mechanism drive in internal combustion engine, institute
State the cap (4) that piston has the shell (2) of cylinder shape and can be inserted into outside the shell (2) on top (11), the shell
Band is useful for the through hole (5) for accommodating the hollow chamber (3) of oil and being arranged in the top (11) of the shell (2), the piston
(1) it is supported on by the cap on the tensioning rail of the traction mechanism drive, which is characterized in that the cap (4) exists
Recess portion (9) at least one flute profile on the inner surface (12) at the top (11) of the direction shell (2) of the cap.
2. the piston (1) according to claim 1 for fluid pressure type haulage gear tensioning apparatus, which is characterized in that more
In the case of a recess portion (9), recess portion (9,9 ') intersection, and crosspoint (7) and the top for being arranged in the shell (2)
Through hole (5) in portion (11) communicates.
3. the piston (1) according to claim 1 for fluid pressure type haulage gear tensioning apparatus, which is characterized in that described
Cap (4) have radially around, the direction of being directed toward the shell (2), aduncate crimping (6).
4. the piston (1) according to claim 3 for fluid pressure type haulage gear tensioning apparatus, which is characterized in that described
Shell (2) has narrowing portion (10) on the outer periphery of the end of the top side of the shell, and the cap (4) is by the volume
Side (6) buckles into the narrowing portion, and prevents from losing.
5. the piston (1) according to claim 3 for fluid pressure type haulage gear tensioning apparatus, which is characterized in that described
There is crimping (6) breach (8), the breach to be aligned at least one recess portion (9,9 ').
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201310219074 DE102013219074A1 (en) | 2013-09-23 | 2013-09-23 | Piston for a hydraulic Zugmittelspanner with a venting device |
| DE102013219074.3 | 2013-09-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104455253A CN104455253A (en) | 2015-03-25 |
| CN104455253B true 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 | Piston with exhaust device for a hydraulic traction mechanism tensioning device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104455253B (en) |
| DE (1) | DE102013219074A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108204386B (en) | 2016-12-20 | 2021-08-17 | 博格华纳公司 | Controlling hydraulic tensioner tuning using piston nose bore size |
| 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 (4)
| 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 | 伊威斯发动机系统两合公司 | Tensioning rail with a channel device in the pressure body |
| CN103154570A (en) * | 2011-03-09 | 2013-06-12 | 伊威斯发动机系统有限责任两合公司 | Tensioning device comprising at least two ventilation elements |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202006006861U1 (en) * | 2006-04-28 | 2007-08-30 | JOH. WINKLHOFER & SÖHNE GMBH & Co. KG | Chain tensioner with cover element |
-
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 (4)
| 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 | 伊威斯发动机系统两合公司 | Tensioning rail with a channel device in the pressure body |
| CN103154570A (en) * | 2011-03-09 | 2013-06-12 | 伊威斯发动机系统有限责任两合公司 | Tensioning device comprising at least two ventilation elements |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102013219074A1 (en) | 2015-03-26 |
| CN104455253A (en) | 2015-03-25 |
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Legal Events
| 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 AG & 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 |
|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |