CN209444387U - A kind of VVL rocker arm locking structure - Google Patents
A kind of VVL rocker arm locking structure Download PDFInfo
- Publication number
- CN209444387U CN209444387U CN201920040420.0U CN201920040420U CN209444387U CN 209444387 U CN209444387 U CN 209444387U CN 201920040420 U CN201920040420 U CN 201920040420U CN 209444387 U CN209444387 U CN 209444387U
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- lock pin
- rocker arm
- quiet
- push jack
- locking
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Abstract
The utility model 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 utility model 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 utility model relates to VVL rocker arm locking structure design fields, more particularly, to applied to two-stage variable valve liter
A kind of VVL rocker arm locking structure of journey 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.
Utility model content
Technical problem to be solved by the utility model is: in view of the problems of the existing technology, providing a kind of VVL rocker arm lock
Only structure improves the action response speed and Reliability of Microprocessor of latch gear.
The technical problems to be solved in the utility model is realized using following technical scheme: a kind of VVL rocker arm locking structure,
Including quiet rocker arm and lock pin, fuel feed hole, lock pin guide and limit hole are opened up on the quiet rocker arm, forms several locks on the lock pin
Push jack is sold, forms lock pin notch section between adjacent lock pin push jack；Lock pin main part and lock pin guide and limit on the lock pin
Clearance fit is formed between hole, lock pin spring is set between the lock pin push jack and quiet rocker arm, the shape between quiet rocker arm and lock pin
At the lock pin hydraulic chamber communicated with fuel feed hole, the lock pin push jack is 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 utility model has the beneficial effects that after hydraulic oil enters rocker arm from fuel feed hole, it is hydraulic
Oil can be entered by lock pin notch section in lock pin hydraulic chamber, push lock pin to overcome lock pin bullet by the oil pressure of hydraulic oil
The elastic force of spring and it is protruding relative to quiet rocker arm, shake arm and purpose that quiet rocker arm is locked into one to realize；It is hydraulic when closing
After oil, lock pin spring drives lock pin return, separates until shaking arm and quiet rocker arm, reaches unlock purpose.It is set using this structure
Meter can effectively eliminate vacant state when lock pin movement, so that lock pin be avoided to lead to latch gear because plastic deformation occurs
Locking movement failure, improves the action response speed and Reliability of Microprocessor of latch gear, at the same time it can also reduce the straight of lock pin
Diameter is conducive to the action response speed for improving latch gear to reduce the own wt of lock pin.
Detailed description of the invention
Fig. 1 is that a kind of organigram of VVL rocker arm locking structure of the utility model (stretch completely under oil pressure effect by lock pin
Out).
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 purpose of the utility model, technical solutions and advantages more clearly understood, with reference to the accompanying drawing and specifically
The utility model is described in detail in embodiment.It should be appreciated that specific embodiment described herein is only used to explain this
Utility model is not used to limit the utility model.
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 above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, and should refer to
Out, any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention etc. should all include
It is within the protection scope of the utility model.
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 |
|---|---|---|---|
| CN201920040420.0U CN209444387U (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 |
|---|---|---|---|
| CN201920040420.0U CN209444387U (en) | 2019-01-10 | 2019-01-10 | A kind of VVL rocker arm locking structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209444387U true CN209444387U (en) | 2019-09-27 |
Family
ID=68016260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920040420.0U Active CN209444387U (en) | 2019-01-10 | 2019-01-10 | A kind of VVL rocker arm locking structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209444387U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441584A (en) * | 2019-01-10 | 2019-03-08 | 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 CN201920040420.0U patent/CN209444387U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441584A (en) * | 2019-01-10 | 2019-03-08 | 绵阳富临精工机械股份有限公司 | A kind of VVL rocker arm locking structure |
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