CN109441584A - A kind of VVL rocker arm locking structure - Google Patents
A kind of VVL rocker arm locking structure Download PDFInfo
- Publication number
- CN109441584A CN109441584A CN201910023302.3A CN201910023302A CN109441584A CN 109441584 A CN109441584 A CN 109441584A CN 201910023302 A CN201910023302 A CN 201910023302A CN 109441584 A CN109441584 A CN 109441584A
- Authority
- CN
- China
- Prior art keywords
- lock pin
- rocker arm
- quiet
- locking
- push jack
- 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.)
- Pending
Links
- 239000000446 fuel Substances 0.000 claims abstract description 11
- 239000011148 porous material Substances 0.000 claims description 2
- 230000009471 action Effects 0.000 abstract description 10
- 230000004044 response Effects 0.000 abstract description 10
- 239000010720 hydraulic oil Substances 0.000 description 10
- 239000003921 oil Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 239000000306 component Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L2001/186—Split rocking arms, e.g. rocker arms having two articulated parts and means for varying the relative position of these parts or for selectively connecting the parts to move in unison
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The present invention provides a kind of VVL rocker arm locking structure, including quiet rocker arm (2) and lock pin (8), fuel feed hole (21), lock pin guide and limit hole (24) are opened up on quiet rocker arm (2), several lock pin push jacks (81) are formed on lock pin (8), form lock pin notch section between adjacent lock pin push jack (81)；Clearance fit is formed between lock pin main part (83) on lock pin and lock pin guide and limit hole (24), lock pin spring (7) are set between lock pin push jack (81) and quiet rocker arm (2), the lock pin hydraulic chamber communicated with fuel feed hole is formed between quiet rocker arm (2) and lock pin (8), lock pin push jack (81) is located in lock pin hydraulic chamber.The present invention can effectively eliminate vacant state when lock pin movement, reduce cotter diameter to reduce lock pin own wt, avoid lock pin from leading to latch gear movement failure because plastic deformation occurs, improve the action response speed and Reliability of Microprocessor of latch gear.
Description
Technical field
The present invention relates to VVL rocker arm locking structure design fields, more particularly, to applied to two-stage variable valve stroke system
A kind of VVL rocker arm locking structure of system.
Background technique
Two-stage variable valve stroke technology can make engine selectively match high or low gas under different rotating speeds
Door path increment further to promote torque output of the engine in the slow-speed of revolution, and promotes function of the engine in high revolving speed
Rate output.
Two-stage variable rocker arm is the core component of two-stage variable valve lift system, it is issued according to engine controller
Signal is controlled to control rocker arm lock pin driving mechanism, and controls the high and low lift condition of rocker arm by lock pin, to reach
The purpose of valve stroke is controlled within the scope of two-stage.Existing lock pin component is arranged among quiet rocker arm, lock pin rear end therein
In vacant state, lock pin is made to be easy to appear plastic deformation in stretching out the course of work, so that the movement for influencing latch gear is rung
Speed is answered, even resulting in lock pin can not return.In addition, the plastic deformation of lock pin is serious in order to prevent, it usually needs increase lock pin
Thus diameter causes lock pin own wt to increase, affects the action response speed of latch gear, and be easy to cause lock pin bullet
Spring and lock pin installation inner hole wall abrasion.
Summary of the invention
The technical problem to be solved by the present invention is in view of the problems of the existing technology, providing a kind of VVL rocker arm locking knot
Structure improves the action response speed and Reliability of Microprocessor of latch gear.
The technical problem to be solved in the present invention is realized using following technical scheme: a kind of VVL rocker arm locking structure, including
Quiet rocker arm and lock pin open up fuel feed hole, lock pin guide and limit hole on the quiet rocker arm, form several lock pins on the lock pin and push away
Piece forms lock pin notch section between adjacent lock pin push jack；Lock pin main part on the lock pin and lock pin guide and limit hole it
Between form clearance fit, lock pin spring is set between the lock pin push jack and quiet rocker arm, between quiet rocker arm and lock pin formed with
The lock pin hydraulic chamber that fuel feed hole communicates, the lock pin push jack are located in lock pin hydraulic chamber.
Preferably, detent projection portion is formed on the lock pin, the detent projection portion is located at lock pin hydraulic chamber
In.
Preferably, locking pin seat mounting hole is opened up on the quiet rocker arm, locking pin seat is fixedly mounted in locking pin seat mounting hole,
The locking pin seat, quiet rocker arm form lock pin hydraulic chamber between lock pin.
Preferably, the locking pin seat mounting hole is cylindrical hole or bellmouth, and the locking pin seat is cylindrical knot
Structure or the pyramidal structure for being less than mouth diameters for base diameter, form riveting fixed structure between the quiet rocker arm and locking pin seat
Press-loading fixation structure is either formed with interference fit type.
Preferably, lock pin spring mounting hole is formed on the quiet rocker arm, the internal diameter of the lock pin spring mounting hole is greater than
The internal diameter in lock pin guide and limit hole, installs lock pin spring in lock pin spring mounting hole.
Preferably, the length in lock pin guide and limit hole is greater than range when lock pin is stretched out relative to quiet rocker arm.
Preferably, the lock pin push jack is sector structure.
Preferably, the lock pin push jack is arranged 3.
Preferably, the lock pin push jack ring detent projection portion is uniformly distributed.
Preferably, the tail end in the lock pin guide and limit hole forms half pore structure.
Compared with prior art, the beneficial effects of the present invention are: hydraulic oil can after hydraulic oil enters rocker arm from fuel feed hole
To enter in lock pin hydraulic chamber by lock pin notch section, lock pin is pushed to overcome lock pin spring by the oil pressure of hydraulic oil
Elastic force and it is protruding relative to quiet rocker arm, shake arm and purpose that quiet rocker arm is locked into one to realize；After closing hydraulic oil,
Lock pin spring drives lock pin return, separates until shaking arm and quiet rocker arm, reaches unlock purpose.Use the design of this structure can be with
Vacant state when lock pin movement is effectively eliminated, so that lock pin be avoided to cause latch gear locking dynamic because plastic deformation occurs
It fails, improves the action response speed and Reliability of Microprocessor of latch gear, at the same time it can also reduce the diameter of lock pin, from
And the own wt of lock pin is reduced, be conducive to the action response speed for improving latch gear.
Detailed description of the invention
Fig. 1 is a kind of organigram of VVL rocker arm locking structure of the present invention (lock pin is fully extended under oil pressure effect).
Fig. 2 is the structural schematic diagram of the quiet rocker arm in Fig. 1.
Fig. 3 is the main view of the lock pin in Fig. 1.
Fig. 4 is the top view of the lock pin in Fig. 1.
Component token name claims in figure: 1- positioning pin, the quiet rocker arm of 2-, 3- reset spring, 4- return spring holder, 5- Roller Shaft
It holds, 6- locking pin seat, 7- lock pin spring, 8- lock pin, 9- shakes arm, 10- lock pin hydraulic chamber, 21- fuel feed hole, 22- lock pin bullet
Spring mounting hole, 23- locking pin seat mounting hole, 24- lock pin guide and limit hole, 81- lock pin push jack, 82- detent projection portion, 83- lock pin
Main part, 84- lock pin notch section.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawing and specific implementation
The present invention is described in detail for example.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, not
For limiting the present invention.
VVL rocker arm locking structure as shown in Figure 1, specifically includes quiet rocker arm 2, reset spring 3, return spring holder 4, roller
Bearing 5, locking pin seat 6, lock pin spring 7 and lock pin 8 and shake arm 9, the quiet rocker arm 2 and shakes and pass through positioning between arm 9
Pin 1 forms relatively turnable movable connection structure, and the roller bearing 5 is mounted on quiet rocker arm 2, in roller bearing 5
Reset spring 3 is arranged in one end, and the top of the reset spring 3 and return spring holder 4 are socketed；It is set in the other end of roller bearing 5
Latch gear is set, the latch gear includes lock pin 8.As shown in Fig. 2, opening up fuel feed hole 21, lock pin respectively on quiet rocker arm 2
Guide and limit hole 24.As shown in Figure 3, Figure 4, form several lock pin push jacks 81 on the lock pin 8, adjacent lock pin push jack 81 it
Between formed lock pin notch section 84.Gap is formed between lock pin main part 83 on the lock pin 8 and lock pin guide and limit hole 24 to match
It closes, lock pin spring 7 is set between the lock pin push jack 81 and quiet rocker arm 2, formation and fuel feed hole between quiet rocker arm 2 and lock pin 8
The 21 lock pin hydraulic chambers 10 communicated, the lock pin push jack 81 are located in lock pin hydraulic chamber 10.
After hydraulic oil enters rocker arm from fuel feed hole 21, hydraulic oil can enter lock pin oil pressure by lock pin notch section 84
In working chamber 10, by the oil pressure of hydraulic oil can push lock pin 8 overcome the elastic force of lock pin spring 7 relative to quiet rocker arm 2 to
Outer stretching, to realize the purpose for shaking arm 9 and quiet rocker arm 2 and being locked into one.After closing hydraulic oil, lock pin spring 7 drives lock pin 8
Return separates until shaking arm 9 and quiet rocker arm 2, to reach unlock purpose.Wherein, pass through the lock pin main part 83 on lock pin 8
Clearance fit is formed between lock pin guide and limit hole 24, vacant state when lock pin 8 acts can be effectively eliminated, to keep away
Exempting from lock pin 8 leads to the movement failure of latch gear locking because plastic deformation occurs, and improves the action response speed of latch gear
And Reliability of Microprocessor, meanwhile, it is designed using above-mentioned structure, the diameter of lock pin 8 can also be reduced, to reduce lock pin 8
Own wt is conducive to the action response speed for improving latch gear.
In order to better ensure that and improve the oil pressure of the hydraulic oil in lock pin hydraulic chamber 10, and then improve latch gear
Action response speed and Reliability of Microprocessor can open up locking pin seat mounting hole 23 on quiet rocker arm 2 as shown in Figure 1 and Figure 2,
Locking pin seat 6 is fixedly mounted in locking pin seat mounting hole 23, the cross sectional shape of the locking pin seat 6 is preferably U-shaped structure, the lock pin
Seat 6, forms lock pin hydraulic chamber 10 between lock pin 8 at quiet rocker arm 2.As shown in Figure 3, Figure 4, the lock pin push jack 81 is fan
Shape structure, quantity is preferably provided 3, and this 3 lock pin push jacks, 81 ring detent projection portion 82 is uniformly distributed, not only processing side
Just, and it can guarantee that hydraulic oil enters the flow of lock pin hydraulic chamber 10 by lock pin push jack 81.Correspondingly, may be used also
To form detent projection portion 82 on lock pin 8, the detent projection portion 82 is located in lock pin hydraulic chamber 10.The lock pin
The diameter of lug boss 82 is smaller than the diameter of lock pin main part 83, in general, the diameter in the detent projection portion 82 is about lock pin
The one third or so of 83 diameter of main part.By the way that detent projection portion 82 is arranged, it can prevent 8 end of lock pin and locking pin seat 6 from pasting
It closes, to guarantee that lock pin hydraulic chamber 10 has certain volume always in 8 motion process of lock pin.Wherein, the lock pin
Seat mounting hole 23 can perhaps the bellmouth locking pin seat 6 can use cylindrical structure or use using cylindrical hole
Base diameter is less than the pyramidal structure of mouth diameters, so that riveting fixed structure can be formed between quiet rocker arm 2 and locking pin seat 6,
Press-loading fixation structure is either formed with interference fit type.Such structure design, can effectively improve the extrusion of lock pin 8
Power, and need not additionally increase the technique for fixing such as welding, so as to be effectively reduced the assembly cost of latch gear.
As shown in Figure 1 and Figure 2, lock pin spring mounting hole 22 is opened up on quiet rocker arm 2, the lock pin spring mounting hole 22
Internal diameter is greater than the internal diameter in lock pin guide and limit hole 24, and lock pin spring 7, the lock pin bullet are installed in lock pin spring mounting hole 22
Spring 7 and lock pin main part 83 form socket structure.The gas vent in conventional rocker latch gear can be cancelled in this way, make lock pin 8
Exist in activity space without air, avoids influencing oil quality.Further, the length in lock pin guide and limit hole 24 is greater than
The tail end of range when lock pin 8 is stretched out relative to quiet rocker arm 2, lock pin guide and limit hole 24 preferably forms half bore knot
Structure, as shown in Figure 2.It is designed using such structure, when lock pin 8 is fully extended relative to quiet rocker arm 2, the lock pin guiding
Limit hole 24 can reliably support entire lock pin main part 83 completely, to reach support lock pin 8 to avoid the generation of lock pin 8
Plastic deformation, and then the action response speed and Reliability of Microprocessor of latch gear are improved, also, can also make lock pin main part 83
Diameter further decreased, and reduce the overall weight of lock pin 8 also further, not only can be to avoid lock pin spring 7
Excessive wear, but also the action response speed of latch gear can be further improved.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, it is noted that all
Made any modifications, equivalent replacements, and improvements etc. within the spirit and principles in the present invention should be included in guarantor of the invention
Within the scope of shield.
Claims (10)
1. a kind of VVL rocker arm locking structure, including quiet rocker arm (2) and lock pin (8), fuel feed hole is opened up on the quiet rocker arm (2)
(21), it is characterised in that: lock pin guide and limit hole (24) is opened up on the quiet rocker arm (2), the lock pin (8) if on formed
Dry lock pin push jack (81) forms lock pin notch section (84) between adjacent lock pin push jack (81)；Lock pin master on the lock pin (8)
Clearance fit is formed between body portion (83) and lock pin guide and limit hole (24), between the lock pin push jack (81) and quiet rocker arm (2)
It is arranged lock pin spring (7), forms the lock pin hydraulic chamber communicated with fuel feed hole (21) between quiet rocker arm (2) and lock pin (8)
(10), the lock pin push jack (81) is located in lock pin hydraulic chamber (10).
2. a kind of VVL rocker arm locking structure according to claim 1, it is characterised in that: form lock on the lock pin (8)
It sells lug boss (82), the detent projection portion (82) is located in lock pin hydraulic chamber (10).
3. a kind of VVL rocker arm locking structure according to claim 1, it is characterised in that: opened up on the quiet rocker arm (2)
Locking pin seat (6) are fixedly mounted in locking pin seat mounting hole (23), the locking pin seat (6), quiet rocker arm in locking pin seat mounting hole (23)
(2), lock pin hydraulic chamber (10) are formed between lock pin (8).
4. a kind of VVL rocker arm locking structure according to claim 3, it is characterised in that: the locking pin seat mounting hole
It (23) is that perhaps the bellmouth locking pin seat (6) is cylindrical structure or is that base diameter is straight less than oral area cylindrical hole
The pyramidal structure of diameter forms riveting fixed structure either with interference fit type between the quiet rocker arm (2) and locking pin seat (6)
Form press-loading fixation structure.
5. a kind of VVL rocker arm locking structure according to claim 1, it is characterised in that: formed on the quiet rocker arm (2)
Lock pin spring mounting hole (22), the internal diameter of the lock pin spring mounting hole (22) are greater than the internal diameter in lock pin guide and limit hole (24),
Lock pin spring (7) are installed in lock pin spring mounting hole (22).
6. a kind of VVL rocker arm locking structure according to claim 1, it is characterised in that: lock pin guide and limit hole
(24) length is greater than range when lock pin (8) are stretched out relative to quiet rocker arm (2).
7. a kind of VVL rocker arm locking structure according to claim 1, it is characterised in that: the lock pin push jack (81) is
Sector structure.
8. a kind of VVL rocker arm locking structure according to claim 1, it is characterised in that: the lock pin push jack (81) is set
Set 3.
9. a kind of VVL rocker arm locking structure according to claim 8, it is characterised in that: described lock pin push jack (81) ring
Detent projection portion (82) is uniformly distributed.
10. a kind of VVL rocker arm locking structure according to claim 1, it is characterised in that: the lock pin guide and limit hole
(24) tail end forms half pore structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910023302.3A CN109441584A (en) | 2019-01-10 | 2019-01-10 | A kind of VVL rocker arm locking structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910023302.3A CN109441584A (en) | 2019-01-10 | 2019-01-10 | A kind of VVL rocker arm locking structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109441584A true CN109441584A (en) | 2019-03-08 |
Family
ID=65543988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910023302.3A Pending CN109441584A (en) | 2019-01-10 | 2019-01-10 | A kind of VVL rocker arm locking structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109441584A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114575954A (en) * | 2022-03-30 | 2022-06-03 | 大连理工大学 | Rocker arm mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080032582A (en) * | 2006-10-10 | 2008-04-15 | 현대자동차주식회사 | Cylinder deactivation for vehicle and various valve lift system |
| US20090078225A1 (en) * | 2007-09-21 | 2009-03-26 | Hendriksma Nick J | Switchable rocker arm |
| CN104989477A (en) * | 2015-07-17 | 2015-10-21 | 绵阳富临精工机械股份有限公司 | Self-lubricating two-stage variable valve lift (VVL) rocker arm |
| CN105298573A (en) * | 2015-11-26 | 2016-02-03 | 杭州新坐标科技股份有限公司 | Valve rocker mechanism for controllable cylinder stopping of internal combustion engine |
| CN206562945U (en) * | 2017-03-22 | 2017-10-17 | 绵阳富临精工机械股份有限公司 | A kind of detent configuration applied to two-stage type VVL rocking arms |
| US20180094551A1 (en) * | 2016-09-30 | 2018-04-05 | Schaeffler Technologies AG & Co. KG | Switchable roller finger follower with integrated leakage path for de-aeration |
| CN209444387U (en) * | 2019-01-10 | 2019-09-27 | 绵阳富临精工机械股份有限公司 | A kind of VVL rocker arm locking structure |
-
2019
- 2019-01-10 CN CN201910023302.3A patent/CN109441584A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080032582A (en) * | 2006-10-10 | 2008-04-15 | 현대자동차주식회사 | Cylinder deactivation for vehicle and various valve lift system |
| US20090078225A1 (en) * | 2007-09-21 | 2009-03-26 | Hendriksma Nick J | Switchable rocker arm |
| CN104989477A (en) * | 2015-07-17 | 2015-10-21 | 绵阳富临精工机械股份有限公司 | Self-lubricating two-stage variable valve lift (VVL) rocker arm |
| CN105298573A (en) * | 2015-11-26 | 2016-02-03 | 杭州新坐标科技股份有限公司 | Valve rocker mechanism for controllable cylinder stopping of internal combustion engine |
| US20180094551A1 (en) * | 2016-09-30 | 2018-04-05 | Schaeffler Technologies AG & Co. KG | Switchable roller finger follower with integrated leakage path for de-aeration |
| CN206562945U (en) * | 2017-03-22 | 2017-10-17 | 绵阳富临精工机械股份有限公司 | A kind of detent configuration applied to two-stage type VVL rocking arms |
| CN209444387U (en) * | 2019-01-10 | 2019-09-27 | 绵阳富临精工机械股份有限公司 | A kind of VVL rocker arm locking structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114575954A (en) * | 2022-03-30 | 2022-06-03 | 大连理工大学 | Rocker arm mechanism |
| CN114575954B (en) * | 2022-03-30 | 2024-01-05 | 大连理工大学 | Rocker arm mechanism |
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