CN103206498B - Mechanical tensioner for a chain drive system of an internal combustion engine - Google Patents
Mechanical tensioner for a chain drive system of an internal combustion engine Download PDFInfo
- Publication number
- CN103206498B CN103206498B CN201210015312.0A CN201210015312A CN103206498B CN 103206498 B CN103206498 B CN 103206498B CN 201210015312 A CN201210015312 A CN 201210015312A CN 103206498 B CN103206498 B CN 103206498B
- Authority
- CN
- China
- Prior art keywords
- chain
- dynamic rail
- internal combustion
- combustion engine
- coil spring
- 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.)
- Expired - Fee Related
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 229920003023 plastic Polymers 0.000 description 8
- 239000004033 plastic Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
- F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
- F02B67/06—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus driven by means of chains, belts, or like endless members
-
- 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
- F16H2007/0804—Leaf 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
- F16H2007/0889—Path of movement of the finally actuated member
- F16H2007/0893—Circular path
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention provides a mechanical tensioner for a chain drive system of an internal combustion engine, comprising a pivot rod fixed to the internal combustion engine, a moving rail and a pin positioned on the internal combustion engine, the moving rail being placed against the chain for guiding the travel of the chain and being pivotably connected to the pivot rod so as to be able to rotate about the pivot rod. The mechanical tensioning device of the invention further comprises a wire spring formed in a U-shape, one side of the open end of the U-shape of the wire spring being in contact with and abutting against the pin, the running rail being provided with a retaining portion by which the other side of the wire spring is fixed to the running rail, wherein the wire spring is pre-tensioned for suitably applying a pressure to the running rail, thereby keeping the chain sufficiently tensioned.
Description
Technical field
The present invention relates to mechanical tensioner, more particularly relates to the mechanical tensioning of the chain transmission system of internal combustion engine
Device.
Background technology
In order to ensure that the chain in the chain legacy system for internal combustion engine, constantly in tensioning state, is provided with machinery
Tight device.Fig. 1 shows conventional mechanical tensioner of the prior art, wherein 1 is chain, 2 is sprocket wheel, the mechanical tensioning
Device includes torsion spring 3, the pivoting lever 4 for being fixed on internal combustion engine, dynamic rail 5 and the pin 6 being positioned in internal combustion engine.Dynamic rail 5 leans chain 1
Place, to the traveling for guiding chain 1, and which is typically made of a plastic.Dynamic rail 5 is pivotably attached in pivoting lever 4,
To rotate around pivoting lever 4.Torsion spring 3 is with pivoting lever 4 as axle, and one end is hooked on pin 6, and the other end is hooked in dynamic rail 5, and
And be arranged to be pressed against dynamic rail 5, to apply pressure to dynamic rail 5.When chain 1 fluffs, the pressure makes dynamic rail 5 around 4 pivot of pivoting lever
Turn, to ensure constantly tension chain 1.
Above-mentioned mechanical tensioner employs torsion spring 3.The shortcoming of this scheme is：The space that torsion spring 3 takes is larger, and
The space of internal combustion engine is sometimes then extremely limited.Therefore, sending out for internal combustion engine can not be adapted to using the mechanical tensioner of torsion spring 3
Exhibition.
In order to solve this problem, it is proposed that replace torsion spring using leaf spring, to adapt to space limited in internal combustion engine, together
When ensure chain transmission system tensioning.The mechanical tensioner of employing leaf spring of the prior art is for example as shown in Fig. 2 wherein
1 ' is chain, and 2 ' are sprocket wheel, and mechanical tensioner includes leaf spring 3 ', the pivoting lever 4 ' for being fixed on internal combustion engine, dynamic rail 5 ' and positioning
Pin 6 ' in internal combustion engine.Dynamic rail 5 ' also leans the placement of chain 1 ', and to the traveling for guiding chain 1 ', and which is also by plastics system
Into.Dynamic rail 5 ' is pivotably attached in pivoting lever 4 ', to rotate around pivoting lever 4 '.The end thereof contacts pin of leaf spring 3 '
6 ' are resisted against on pin 6 ', and the other end is provided with hole, and dynamic rail 5 ' is provided with projection (not marking in figure) in appropriate section, by making projection
Leaf spring 3 ' is fixed on into dynamic rail 5 ' in the other end through hole.Leaf spring 3 ' is similarly arranged to be pressed against dynamic rail 5 ', with to dynamic rail 5 '
Apply pressure, so as to ensure constantly tension chain 1 '.But, the mechanical tensioner of this employing leaf spring is relatively costly.
The content of the invention
It is therefore an object of the present invention to a kind of improved mechanical tensioner is provided, for the chain drive system of internal combustion engine
System, which provides enough tensions with relatively low cost in a straightforward manner in the limited space of internal combustion engine.
Mechanical tensioner of the invention, pivoting lever which includes being fixed on internal combustion engine, dynamic rail and is positioned at internal combustion
Pin on machine, dynamic rail lean chain placement, and to the traveling for guiding chain, and which is pivotably attached in pivoting lever,
To rotate around pivoting lever.The mechanical tensioner also includes coil spring, and which is formed as U-shaped, the opening of the coil spring of U-shaped with
Pin contacts are simultaneously resisted against on pin, and dynamic rail is provided with maintaining part, and the coil spring other end is fixed on dynamic rail, wherein coil spring quilt by the maintaining part
It is pre-tensioner, suitably to apply pressure to dynamic rail, thus make chain keep being tensioned enough.
Preferably, coil spring is made up of steel wire.
Preferably, maintaining part is included on dynamic rail thickness direction across the recess of dynamic rail, and the other end of coil spring is fixed
In the recess.
Preferably, dynamic rail is parallel to being respectively provided with groove on two opposite sides of chain bearing of trend, two of the coil spring of U-shaped
Lower limb is respectively assembled in the groove.
According to the present invention, dynamic rail is made of plastics.The plastics dynamic rail (blade) that guiding chain is advanced is assemblied in one with coil spring
Rise.Then, plastics dynamic rail is assemblied in internal combustion engine together with coil spring.
According to the present invention, by means of the pressure of pre-tensioned coil spring, dynamic rail is around the pivoting lever rotation being fixed in internal combustion engine
Turn.In this way, as chain is advanced, no matter chain is loose or tight, the mechanical tensioner of the present invention will all ensure chain
In tensioning state.
Description of the drawings
By the detailed description for carrying out to the embodiment of the present invention with reference to the accompanying drawings, the feature and its advantage of the present invention will be
Obviously.In figure：
Fig. 1 is the perspective view of the mechanical tensioner of the employing torsion spring of prior art.
Fig. 2 is the view of the mechanical tensioner of the employing leaf spring of prior art.
Fig. 3 is the view of the mechanical tensioner of the employing coil spring of the embodiment of the present invention.
Fig. 4-6 is the enlarged detail perspective view of the mechanical tensioner of the embodiment of the present invention.
Reference numerals list
1 chain, 2 sprocket wheel, 3 leaf spring, 4 pivoting lever, 5 plastics dynamic rail 6 is sold
1 ' chain, 2 ' sprocket wheel, 3 ' torsion spring, 4 ' pivoting lever, 5 ' plastics dynamic rail 6 ' is sold
The 50 plastics dynamic rail 60 of hole that 10 chain, 20 sprocket wheel, 30 coil spring 40 is used for pivoting lever is sold
70 recess, 80 groove
Specific embodiment
Embodiments of the invention are described in detail referring to Fig. 3-6.
As shown in figure 3, the chain transmission system of internal combustion engine includes chain 10 and sprocket wheel 20.Mechanical tensioning of the invention
Device includes pivoting lever (not shown), dynamic rail 50 and the pin 60 being positioned on internal combustion engine for being fixed on internal combustion engine, and dynamic rail 50 is leaned
Chain 10 is placed, and to the traveling for guiding chain 10, and which has the hole 40 for pivoting lever, for pivotally connecting
Pivoting lever is connected to, to rotate around pivoting lever.The mechanical tensioner also includes coil spring 30, and which is formed as U-shaped, U-shaped
The opening of coil spring 30 is contacted with pin 60 and is resisted against on pin 60, is additionally provided with maintaining part in dynamic rail 50, and the maintaining part is formed as horizontal
Across the recess 70 (referring to Fig. 4-6) of 50 thickness direction of dynamic rail, the other end of coil spring 30 is fixed in the recess 70, wherein coil spring 30
It is pre-tensioned, suitably to apply pressure to dynamic rail 50, thus makes chain 10 keep being tensioned enough.
As shown in figure 4, dynamic rail 50 is parallel to groove 80 is respectively provided with two opposite sides of 10 bearing of trend of chain, and (Fig. 4 is only
Side is shown), the two legs of coil spring 30 are respectively assembled in groove 80.
By adjusting the pre-tensioner of coil spring 30, suitably apply pressure to dynamic rail.By means of the pressure of pre-tensioned coil spring 30
Power, dynamic rail 50 can surround the pivoting lever rotation being fixed in internal combustion engine.In this way, as chain is advanced, no matter chain is
Loose or tight, the mechanical tensioner of the present invention will all ensure chain in tensioning state.
In the above-described embodiments, dynamic rail 50 is provided with groove 80 parallel to two opposite sides of 10 bearing of trend of chain.But
It is alternatively, the boss parallel to two opposite sides protrusions of chain bearing of trend from coil spring in dynamic rail, can also to be provided with, its
The two legs of middle U-shaped coil spring can be resisted against on boss, so that pre-tensioned coil spring suitably can apply pressure to dynamic rail.
It will be understood by those skilled in the art that above description is exemplary.In thought and model without departing substantially from the present invention
In the case of enclosing, those skilled in the art still can to the present invention many modifications may be made and change.
Claims (3)
1. a kind of mechanical tensioner of the chain transmission system for internal combustion engine, including being fixed on the pivoting lever of internal combustion engine, dynamic
Rail and the pin being positioned on internal combustion engine, dynamic rail lean chain placement, and to the traveling for guiding chain, and which is pivotally
Pivoting lever is connected to, to rotate around pivoting lever, it is characterised in that the mechanical tensioner also includes coil spring, its formation
For U-shaped, the two legs of the opening of the coil spring of U-shaped with pin contacts and are resisted against on pin simultaneously, and dynamic rail is provided with maintaining part, coil spring
The other end is fixed on dynamic rail by the maintaining part, and wherein coil spring is pre-tensioned, and suitably to apply pressure to dynamic rail, thus makes chain
Bar keeps being tensioned enough.
2. the mechanical tensioner described in claim 1, wherein maintaining part are included on dynamic rail thickness direction across the recessed of dynamic rail
Mouthful, the other end of coil spring is fixed in the recess.
3. the mechanical tensioner described in claim 1 or 2, wherein, two opposite sides of the dynamic rail parallel to chain bearing of trend
On be respectively provided with groove, the two legs of the coil spring of U-shaped are respectively assembled in the groove.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210015312.0A CN103206498B (en) | 2012-01-17 | 2012-01-17 | Mechanical tensioner for a chain drive system of an internal combustion engine |
| DE201310200162 DE102013200162A1 (en) | 2012-01-17 | 2013-01-09 | Mechanical clamping apparatus for chain drive of combustion engine, has spring whose one end is held at tensioning rail and wire spring pre-tensioned, in order to exert pressing force at rail such that string is held with sufficing voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210015312.0A CN103206498B (en) | 2012-01-17 | 2012-01-17 | Mechanical tensioner for a chain drive system of an internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103206498A CN103206498A (en) | 2013-07-17 |
| CN103206498B true CN103206498B (en) | 2017-05-17 |
Family
ID=48693343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210015312.0A Expired - Fee Related CN103206498B (en) | 2012-01-17 | 2012-01-17 | Mechanical tensioner for a chain drive system of an internal combustion engine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103206498B (en) |
| DE (1) | DE102013200162A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014201667A1 (en) | 2014-01-30 | 2015-07-30 | Schaeffler Technologies AG & Co. KG | Clamping device for traction mechanism drive |
| DE102014015156A1 (en) * | 2014-10-14 | 2016-04-14 | Iwis Motorsysteme Gmbh & Co. Kg | Clamping rail with wear protection element |
| CN105736656A (en) * | 2014-12-11 | 2016-07-06 | 舍弗勒技术股份两合公司 | Mechanical tensioner for a chain drive system of an internal combustion engine and running rail |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH084859A (en) * | 1994-06-17 | 1996-01-12 | Nippon Seiko Kk | Automatic tensioner |
| JPH10231905A (en) * | 1997-02-20 | 1998-09-02 | Tsubakimoto Chain Co | Chain tension relieving device |
| JP2003222208A (en) * | 2002-01-31 | 2003-08-08 | Tsubakimoto Chain Co | Tensioner lever for transmission medium |
| JP4248544B2 (en) * | 2005-12-19 | 2009-04-02 | 株式会社椿本チエイン | Movable guide for transmission |
| JP4468421B2 (en) * | 2007-07-31 | 2010-05-26 | 株式会社椿本チエイン | Engine chain guide |
| CN201992015U (en) * | 2011-03-31 | 2011-09-28 | 浙江吉利汽车研究院有限公司 | Chain tensioner for automobile oil pump |
-
2012
- 2012-01-17 CN CN201210015312.0A patent/CN103206498B/en not_active Expired - Fee Related
-
2013
- 2013-01-09 DE DE201310200162 patent/DE102013200162A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CN103206498A (en) | 2013-07-17 |
| DE102013200162A1 (en) | 2013-07-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: SCHAEFFLER FIFTH INVESTMENT MANAGEMENT GMBH + CO., Free format text: FORMER OWNER: SCHAEFFLER TECHNOLOGIES GMBH + CO. KG Effective date: 20150810 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| 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: Fifth Schaeffler investment management GmbH & Co.KG Address after: German Herzogenaurach Applicant after: SCHAEFFLER TECHNOLOGIES AG & CO.KG Address before: German Herzogenaurach Applicant before: SCHAEFFLER TECHNOLOGIES GmbH & Co.KG |
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| 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 Free format text: CORRECT: APPLICANT; FROM: SCHAEFFLER FIFTH INVESTMENT MANAGEMENT GMBH + CO., KG TO: SCHAEFFLER TECHNOLOGIES GMBH + CO. KG |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20150810 Address after: German Herzogenaurach Applicant after: Fifth Schaeffler investment management GmbH & Co.KG Address before: German Herzogenaurach Applicant before: SCHAEFFLER TECHNOLOGIES AG & CO. KG |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170517 |
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| CF01 | Termination of patent right due to non-payment of annual fee |