CN106051082A - Double-plunger tensioner - Google Patents
Double-plunger tensioner Download PDFInfo
- Publication number
- CN106051082A CN106051082A CN201610679474.2A CN201610679474A CN106051082A CN 106051082 A CN106051082 A CN 106051082A CN 201610679474 A CN201610679474 A CN 201610679474A CN 106051082 A CN106051082 A CN 106051082A
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- CN
- China
- Prior art keywords
- plunger
- damping
- cavity
- loading
- stretcher
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- 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.)
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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
- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The invention provides a double-plunger tensioner. The tensioner comprises a shell (1), a top column (2), a damping plunger (3) and a loading plunger (4); a loading cavity oil inlet hole (101), a loading cavity (102), a damping cavity (103) and a damping cavity oil inlet hole (104) are formed in the shell (1), the damping plunger (3) and the damping cavity (103) are matched to form an oil pressure damping gap, a damping spring (6) is arranged between the damping plunger (3) and the shell (1), the top column (2) and the loading cavity (102) are in interference fit, the loading plunger (4) and the loading cavity (102) are in interference fit, and a loading spring (5) is arranged between the top column (2) and the loading plunger (4); and the tensioner is applied to an engine timing transmission system, the tensioner can output corresponding force values according to different conditions of an engine, the service life of the engine timing transmission system is prolonged, the output power of an engine is improved, and fuel economy of the engine is improved.
Description
Technical field
The present invention relates to the plunger stretcher for engine timing drive system, especially relating to can be according to electromotor
Different operating modes export a kind of double plunger stretcher of corresponding force value.
Background technology
Stretcher is widely used in the correct time chain driving system of electromotor, and it passes through internal hydraulic pressure power buffer chain
Vibratory impulse in transmission process, to reduce each parts impact in drive system, extends the use of timing driving system
Life-span, it is ensured that transmission accurately with reliable, and reduce drive noise, improve the comfortableness driven.
But, existing stretcher inner chamber is only provided with a spring, therefore, its under the various operating mode of electromotor all only
Can a kind of rigidity of output and force value parameter.Generally, in order to meet electromotor at high speeds properly functioning, the force value of spring and just
Degree is set relatively big, to offset the vibration and centrifugal force and system vibration that timing system produces.But, when electromotor in low
When running under rotating speed, its produced vibration and centrifugal force are less, are not required to stretcher and provide big spring force value and rigidity.
The consequence thereby resulted in is: engine timing system is chronically under big spring force value and rigidity and works, and chain is led with chain
Frictional force between rail is relatively big, makes chain and chain guide the most constantly be worn, and makes chain, chain guide produce high temperature.
Owing to the widely used plastics of chain guide of the prior art are made, its abrasion resistance and heat-resisting quantity are all far below
The chain that metal is made.If engine timing drive system is chronically at work under big spring force value and this operating mode of rigidity
Make, chain guide will be made to be rubbed out groove or rugged surface, thus cause following consequence:
(1), the guidance quality of chain guide be deteriorated, make the chain vibration aggravation when transmission, engine timing drive system
Operating mode more unstable, thus reduce the service life of engine timing drive system；
(2), chain will cause the output of electromotor to decline because bearing the bigger resistance of motion, thus have impact on and send out
The fuel economy of motivation.
Summary of the invention
The technical problem to be solved in the present invention is: the problem existed for prior art, it is provided that a kind of double plunger stretcher,
Improve working life and the Fuel Economy of engine timing drive system.
The technical problem to be solved in the present invention realizes by the following technical solutions: a kind of double plunger stretcher, including shell
Body, fore-set and damping plunger and loading plunger, arrange LOADED CAVITY and LOADED CAVITY fuel feed hole, damping cavity and damping cavity on housing
Fuel feed hole, described damping plunger coordinates with damping cavity and forms oil pressure damping clearance, arranges resistance between damping plunger and housing
Buddhist nun's spring, described fore-set, loading plunger form matched in clearance with LOADED CAVITY respectively, arrange loading between fore-set and loading plunger
Spring.
Preferably, described fore-set being offered steam vent, described steam vent communicates with LOADED CAVITY.
Preferably, the rigidity of described loading spring is more than the rigidity of damping spring.
Preferably, the gap that described fore-set and/or loading plunger and LOADED CAVITY are formed is set to 0.02mm-0.06mm.
Preferably, one end of described fore-set forms positioning convex, and described positioning convex is mutually socketed with loading spring.
Preferably, described fore-set is arranged in parallel with damping plunger.
Preferably, one end of described loading plunger forms positive stop lug boss, and described positive stop lug boss is mutually socketed with loading spring.
Preferably, the other end of described loading plunger is formed and loads plunger die cavity, described loading plunger die cavity and LOADED CAVITY
Fuel feed hole communicates.
Preferably, also include that check valve, described check valve are fixedly mounted in damping cavity, and described damping spring two ends are divided
It is not connected with damping plunger, check valve.
Preferably, the described gap between damping plunger and damping cavity is set to 0.02mm-0.06mm.
Compared with prior art, the invention has the beneficial effects as follows: owing to being provided with damping plunger, fore-set on stretcher and adding
Carry plunger, damping spring be set between damping plunger and housing and between damping plunger and housing, form oil pressure damping clearance,
Loading spring is set between fore-set and loading plunger and fore-set, loading plunger respectively and form matched in clearance between housing, because of
This, in engine timing drive system, matched with movable chain guide respectively by damping plunger, loading plunger, thus can
So that timing chain is regulated in time so that the stretcher of the present invention can export according to the different operating modes of electromotor accordingly
Force value, damage alleviating the friction under electromotor is in different rotating speeds especially middle and slow speed of revolution of the engine timing drive system
Consumption, improves the working life of engine timing drive system, and adds the output of electromotor, thus improves and start
The fuel economy of machine.
Accompanying drawing explanation
Fig. 1 is the structural map of the present invention a kind of double plunger stretcher.
Fig. 2 is the structure cutaway view (electromotor is in non-duty) of the present invention a kind of double plunger stretcher.
Fig. 3 is the structure cutaway view (electromotor is in middle and slow speed of revolution state) of the present invention a kind of double plunger stretcher.
Fig. 4 is the structure cutaway view (electromotor is in high-speed state) of the present invention a kind of double plunger stretcher.
Fig. 5 is the fundamental diagram of the engine timing chain drive system utilizing the present invention a kind of double plunger stretcher.
Labelling in figure: 1-housing, 2-fore-set, 3-damps plunger, and 4-loads plunger, 5-loading spring, 6-damping spring, 7-
Check valve, 8-exhaust sprocket, 9-air inlet sprocket wheel, 10-fixes chain guide, 11-crankshaft sprocket, 12-activity chain guide, 13-
Timing chain, 21-positioning convex, 22-steam vent, 31-detent, 41-loads plunger die cavity, and 42-positive stop lug boss, 101-adds
Carry chamber fuel feed hole, 102-LOADED CAVITY, 103-damping cavity, 104-damping cavity fuel feed hole, 121-activity chain guide rails assembling hole.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with the accompanying drawings and be embodied as
The present invention is described in detail for example.Should be appreciated that specific embodiment described herein only in order to explain the present invention, not
For limiting the present invention.
Double plunger stretcher as shown in Figure 1, Figure 2, Figure 3, Figure 4, specifically include housing 1, fore-set 2, damping plunger 3 and
Load plunger 4 and check valve 7, housing 1 is provided with LOADED CAVITY 102 that be parallel to each other, columnar and damping cavity 103, institute
The damping plunger 3 stated coordinates and is formed oil pressure damping clearance, generally, described damping plunger 3 and damping cavity 103 with damping cavity 103
Between gap be set to 0.02mm-0.06mm；Between damping plunger 3 and housing 1, damping spring 6 is set.Described fore-set
2, load plunger 4 and form matched in clearance with LOADED CAVITY 102 respectively, generally, described fore-set 2, load plunger 4 respectively with LOADED CAVITY
The gap formed between 102 is set to 0.02mm-0.06mm；Between fore-set 2 and loading plunger 4, loading spring 5 is set.?
Also being respectively provided with LOADED CAVITY fuel feed hole 101, damping cavity fuel feed hole 104 on housing 1, engine liquid force feed can be respectively from LOADED CAVITY
Fuel feed hole 101, damping cavity fuel feed hole 104 enter inside stretcher.Described check valve 7 is fixedly mounted in damping cavity 103, described
Damping spring 6 two ends are connected with damping plunger 3, check valve 7 respectively.
Push check valve 7 open when entering the hydraulic oil within stretcher from damping cavity fuel feed hole 104 and enter in damping cavity 103
After, under damping spring 6 or hydraulic fluid pressure effect, the space that described damping plunger 3 can be limited in damping cavity 103
Interior relative to housing 1 flexible motion.The hydraulic oil within stretcher is entered at loading spring 5 or from LOADED CAVITY fuel feed hole 101
Under the effect of pressure, described load plunger 4 can relative to housing 1 flexible motion in the space that LOADED CAVITY 102 is limited,
And then drive fore-set 2 relative to housing 1 flexible motion in the space that LOADED CAVITY 102 is limited.
In engine timing chain drive system as shown in Figure 5, when the engine operates, crankshaft sprocket 11 therein
Rotarily drive timing chain 13 synchronization action, and then drive exhaust sprocket 8, air inlet sprocket wheel 9 synchronous rotary, described timing chain
Bar 13 works in being limited in the region of regulation by fixing chain guide 10 and movable chain guide 12, wherein, and described work
Dynamic chain guide 12 can rotate around movable chain guide rails assembling hole 121.The double plunger stretcher of the present invention is arranged on activity chain
The tail end of bar guide rail 12, fore-set 2 therein under the effect of loading spring 5, damping plunger 3 stretch under the effect of damping spring 6
Go out, and by activity chain guide 12 to sinciput, be allowed to compress timing chain 13.
When running under electromotor is at middle and slow speed of revolution, electromotor output oil pressure is relatively low.As shown in Fig. 3, Fig. 5, engine
Oil simultaneously enters in stretcher by damping cavity fuel feed hole 104, LOADED CAVITY fuel feed hole 101, and timing chain 13 is produced when transmission
Raw vibration will be delivered to fore-set 2 and damping plunger 3 by movable chain guide 12, and make it produce reciprocating motion.Work as damping
When plunger 3 is relative to housing 1 rearward movement, damping cavity 103 chamber pressure increases, and check valve 7 is closed, and enters damping cavity 103
Engine motor oil is sealed in damping cavity 103, and now, prevention damping plunger 3 is continued backward by the hydraulic coupling of engine motor oil
Motion, and the impact of timing chain 13 is buffered by forming hydraulic damping power.And load plunger 4 will be by LOADED CAVITY oil-feed
Hole 101 enters and travels forward relative to housing 1 under the effect of the engine oil pressure within stretcher.Machine due to electromotor
Oil pressure is relatively low, and the displacement loading plunger 4 is less so that the compress variation of loading spring 5 is the least, Jin Erjia
The elastic load that fore-set 2 is applied by load spring 5 is the least, therefore so that engine timing chain drive system is when transmission
Produced frictional force is the least, such that it is able to alleviate system wear, makes the work longevity of engine timing drive system
Life is improved.
When electromotor runs at high speeds, electromotor output oil pressure is higher.As shown in Figure 4, Figure 5, plunger 4 is loaded logical
Cross LOADED CAVITY fuel feed hole 101 to enter and travel forward relative to housing 1 under the effect of the engine oil pressure within stretcher, because of
The oil pressure of the engine motor oil entering stretcher is higher so that the displacement loading plunger 4 is relatively big, so that loading spring 5
Compress variation the biggest, and then the elastic load that fore-set 2 is applied by loading spring 5 is the biggest, by fore-set 2
Timing chain 13 can be applied bigger load, such that it is able to suppression engine timing chain drive system institute at high speed
The vibration produced, alleviates drive noise, is conducive to keeping the even running of engine timing chain drive system.
As shown in Figure 3, Figure 4, in engine timing chain drive system work process, in order to ensure fore-set 2 relative to
The motility of housing 1 motion, can offer steam vent 22 on fore-set 2, and described steam vent 22 communicates with LOADED CAVITY 102.For
Preferably limit the beat amplitude of loading spring 5, it is ensured that the location of loading spring 5 is reliable and job stability, can be on top
Post 2 one end arranges positioning convex 21, meanwhile, arranges positive stop lug boss 42, the two of described loading spring 5 loading plunger 4 one end
End forms mutual socket join structure with positioning convex 21, positive stop lug boss 42 respectively.At the other end loading plunger 4, loading can be set
Plunger die cavity 41, described loading plunger die cavity 41 communicates with LOADED CAVITY fuel feed hole 101, when engine motor oil is entered by LOADED CAVITY
Oilhole 101 enters after loading plunger die cavity 41, and loading plunger 4 can be made to move more relative to housing 1 under engine oil pressure effect
Add steadily.Similarly, in order to preferably limit the beat amplitude of damping spring 6, it is ensured that the location of damping spring 6 is reliable and works
Stability, can arrange detent 31 on damping plunger 3, and make damping spring 6 lower end coordinate compression with check valve 7, separately
One end then coordinates with detent 31 inner chamber end face, and after mounting, damping spring 6 is in compressive state, so that it can be to damping
Plunger 3 applies thrust and makes damping plunger 3 outwards to eject.
In view of above-mentioned double plunger stretcher operationally, fore-set 2 therein, damping plunger 3 and movable chain guide
12 contact, and described damping plunger 3 is mainly used in electromotor provides less thrust to system, to alleviate under middle and slow speed of revolution
The abrasion of system, and load plunger 4 and match with fore-set 2, being mainly used in electromotor provides bigger to system at high speed
Thrust, with the vibration of control system.Therefore, the most arranged in parallel between described fore-set 2 and damping plunger 3, meanwhile,
The rigidity of described loading spring 5 is more than the rigidity of damping spring 6.Same load is born at loading spring 5, damping spring 6
In the case of, owing to the rigidity of loading spring 5 is relatively large, its compress variation produced is the most relatively small, therefore it promotes fore-set 2
The most relatively small with load that timing chain 13 is applied, and the rigidity of damping spring 6 is relatively small, in order to it can make damping
Plunger 3 remains and contacts and be synchronized with the movement with movable chain guide 12, so that the double plunger stretcher of the present invention is permissible
Under the different operating modes of electromotor, export the force value of correspondence, be in not at electromotor alleviating engine timing chain drive system
With the frictional dissipation under rotating speed especially middle and slow speed of revolution, meet electromotor big to stretcher output under high-speed cruising operating mode simultaneously
Force value and the requirement of rigidity, the working life of raising engine timing drive system, and increase the output of electromotor, thus
The fuel economy making electromotor is the most correspondingly improved.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, it is noted that all
Any amendment, equivalent and the improvement etc. made within the spirit and principles in the present invention, should be included in the guarantor of the present invention
Within the scope of protecting.
Claims (10)
1. a double plunger stretcher, including housing (1) and damping plunger (3), housing (1) is arranged damping cavity (103) and
Damping cavity fuel feed hole (104), described damping plunger (3) coordinates with damping cavity (103) and forms oil pressure damping clearance, at damping column
Between plug (3) and housing (1), damping spring (6) is set, it is characterised in that: also include fore-set (2) and load plunger (4), at shell
LOADED CAVITY fuel feed hole (101) and LOADED CAVITY (102) be set on body (1), described fore-set (2), load plunger (4) respectively with LOADED CAVITY
(102) form matched in clearance, loading spring (5) is set between fore-set (2) and loading plunger (4).
A kind of double plunger stretcher the most according to claim 1, it is characterised in that: offer aerofluxus on described fore-set (2)
Hole (22), described steam vent (22) communicates with LOADED CAVITY (102).
A kind of double plunger stretcher the most according to claim 1, it is characterised in that: the rigidity of described loading spring (5) is big
Rigidity in damping spring (6).
4. according to a kind of double plunger stretcher described in any one of claim 1-3, it is characterised in that: described fore-set (2) and/or
The gap that loading plunger (4) and LOADED CAVITY (102) are formed is set to 0.02mm-0.06mm.
5. according to a kind of double plunger stretcher described in any one of claim 1-3, it is characterised in that: the one of described fore-set (2)
End forms positioning convex (21), and described positioning convex (21) is mutually socketed with loading spring (5).
6. according to a kind of double plunger stretcher described in any one of claim 1-3, it is characterised in that: described fore-set (2) with
Damping plunger (3) is arranged in parallel.
7. according to a kind of double plunger stretcher described in any one of claim 1-3, it is characterised in that: described loading plunger (4)
One end formed positive stop lug boss (42), described positive stop lug boss (42) is mutually socketed with loading spring (5).
A kind of double plunger stretcher the most according to claim 7, it is characterised in that: the other end of described loading plunger (4)
Being formed and load plunger die cavity (41), described loading plunger die cavity (41) communicates with LOADED CAVITY fuel feed hole (101).
9. according to a kind of double plunger stretcher described in any one of claim 1-3, it is characterised in that: also include check valve (7),
Described check valve (7) is fixedly mounted in damping cavity (103), and described damping spring (6) two ends respectively with damping plunger (3),
Check valve (7) connects.
10. according to a kind of double plunger stretcher described in any one of claim 1-3, it is characterised in that: described damping plunger
(3) gap and between damping cavity (103) is set to 0.02mm-0.06mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610679474.2A CN106051082A (en) | 2016-08-17 | 2016-08-17 | Double-plunger tensioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610679474.2A CN106051082A (en) | 2016-08-17 | 2016-08-17 | Double-plunger tensioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106051082A true CN106051082A (en) | 2016-10-26 |
Family
ID=57194916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610679474.2A Pending CN106051082A (en) | 2016-08-17 | 2016-08-17 | Double-plunger tensioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106051082A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438884A (en) * | 2016-10-31 | 2017-02-22 | 绵阳富临精工机械股份有限公司 | Timing chain tensioner with constant pressure control valve |
| CN109058404A (en) * | 2018-10-26 | 2018-12-21 | 伊维氏传动系统（平湖）有限公司 | A kind of integrated hydraulic double-piston stretcher |
| CN111601985A (en) * | 2018-01-31 | 2020-08-28 | 博格华纳公司 | Variable force tensioner arm with cap coil spring |
| EP3759377A4 (en) * | 2018-02-26 | 2021-07-21 | Borgwarner Inc. | Variable force tensioner with internal reservoir technology primary bore |
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| US20100093474A1 (en) * | 2008-10-09 | 2010-04-15 | Kouichi Onimaru | Chain tensioner |
| CN202690924U (en) * | 2012-08-15 | 2013-01-23 | 平湖康弗莱尔汽车发动机系统有限公司 | Mechanical tensioner |
| CN104884841A (en) * | 2012-12-18 | 2015-09-02 | 博格华纳公司 | Tensioner with spring force control in a second bore |
| CN205207562U (en) * | 2015-11-10 | 2016-05-04 | 绵阳富临精工机械股份有限公司 | Variable force tensioning ware of engine timing chain |
| CN105757194A (en) * | 2016-03-28 | 2016-07-13 | 广州汽车集团股份有限公司 | Self-adjusting tensioner |
| CN205937679U (en) * | 2016-08-17 | 2017-02-08 | 绵阳富临精工机械股份有限公司 | Duplex plunger tensioning ware |
-
2016
- 2016-08-17 CN CN201610679474.2A patent/CN106051082A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100093474A1 (en) * | 2008-10-09 | 2010-04-15 | Kouichi Onimaru | Chain tensioner |
| CN202690924U (en) * | 2012-08-15 | 2013-01-23 | 平湖康弗莱尔汽车发动机系统有限公司 | Mechanical tensioner |
| CN104884841A (en) * | 2012-12-18 | 2015-09-02 | 博格华纳公司 | Tensioner with spring force control in a second bore |
| CN205207562U (en) * | 2015-11-10 | 2016-05-04 | 绵阳富临精工机械股份有限公司 | Variable force tensioning ware of engine timing chain |
| CN105757194A (en) * | 2016-03-28 | 2016-07-13 | 广州汽车集团股份有限公司 | Self-adjusting tensioner |
| CN205937679U (en) * | 2016-08-17 | 2017-02-08 | 绵阳富临精工机械股份有限公司 | Duplex plunger tensioning ware |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106438884A (en) * | 2016-10-31 | 2017-02-22 | 绵阳富临精工机械股份有限公司 | Timing chain tensioner with constant pressure control valve |
| CN111601985A (en) * | 2018-01-31 | 2020-08-28 | 博格华纳公司 | Variable force tensioner arm with cap coil spring |
| EP3759377A4 (en) * | 2018-02-26 | 2021-07-21 | Borgwarner Inc. | Variable force tensioner with internal reservoir technology primary bore |
| US11448293B2 (en) | 2018-02-26 | 2022-09-20 | Borgwarner Inc. | Variable force tensioner with internal reservoir technology primary bore |
| CN109058404A (en) * | 2018-10-26 | 2018-12-21 | 伊维氏传动系统（平湖）有限公司 | A kind of integrated hydraulic double-piston stretcher |
| CN109058404B (en) * | 2018-10-26 | 2024-01-02 | 伊维氏传动系统（平湖）有限公司 | Integrated hydraulic double-piston tensioner |
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Application publication date: 20161026 |
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