CN105298572B - A kind of two-stage variable rocker arm for engine - Google Patents
A kind of two-stage variable rocker arm for engine Download PDFInfo
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- CN105298572B CN105298572B CN201510646985.XA CN201510646985A CN105298572B CN 105298572 B CN105298572 B CN 105298572B CN 201510646985 A CN201510646985 A CN 201510646985A CN 105298572 B CN105298572 B CN 105298572B
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- lock pin
- rocker arm
- arm
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- spring
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Abstract
The present invention discloses a kind of two-stage variable formula valve stroke rocker arm, provides that a kind of structure is reliable, and noise is small, reduces the engine valve dual-lift rocker arm system of friction；This rocker arm includes quiet rocker arm (2), shakes arm (11), roll wheel assembly (5,6,7), valve stroke switching lock pin component (8,9,10,11,12), shakes arm reset assembly (3,4)；Rocker arm of the present invention provides a kind of stagewise latch gear, VVL rocker arm lock pin reseting cavity volume can be effectively reduced using latch gear of the present invention, effectively liberate lock pin arrangement space, increase lock pin working end diameter, to avoid because lock pin be plastically deformed due to can not return and lead to two-part rocker arm VVL thrashing, the functional reliability for improving two-stage variable Formula V VL rocker arm has outstanding advantages of structure is simple, the implementation cost is low.
Description
Technical field
The present invention relates to a kind of rocker arms of variable valve lift system for engine.
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 low speed, and promotes power of the engine in high revolving speed
Output.When engine selects the biggish valve stroke amount of matching when high revolving speed is run, so as to significantly increase air-breathing
Amount, so that power output when improving high revolving speed；When the slow-speed of revolution is run, selection matches lesser valve stroke to engine
Amount, so as to improve the burning velocity of fuel oil, so that improving the torque output when slow-speed of revolution.And two-stage variable rocker arm is two
The core component of grade variable valve lift system, it controls rocker arm lock pin according to the control signal that engine controller issues and drives
Motivation structure, and the high and low lift condition of rocker arm is controlled by the opening of lock pin, lock status, to reach in two-stage range internal control
The purpose of valve stroke processed.
In the prior art, the working end diameter of lock pin is influenced by installation end diameter and lock pin reset space, can not
Plastic deformation is directly solved the problems, such as by increasing diameter, plastic deformation causes lock pin to fail.It is lock pin there is also a kind of problem
Integrally manufactured with lock pin spring seat, technics comparing is complicated, and difficulty of processing is larger, and higher cost, therefore these problems have
It is to be modified.
In the prior art, the working end diameter of lock pin is influenced by installation end diameter and lock pin reset space, can not
Plastic deformation is directly solved the problems, such as by increasing diameter, plastic deformation causes lock pin to fail.It is lock pin there is also a kind of problem
Integrally manufactured with lock pin spring seat, technics comparing is complicated, and difficulty of processing is larger, and higher cost, therefore these problems have
It is to be modified.
In the prior art, shake arm resetting apparatus and generally use external torsional spring mode, be unfavorable for the arrangement in space, and increase
Quality is added, in the prior art, VVL rocker arm causes the face valve contacts R to need additional the unlubricated design in the face valve contacts R
Increase lubricating system, increases engine cylinder cover and design difficulty of processing.
Summary of the invention
The technical problem to be solved by the present invention is in view of the deficienciess of the prior art, proposing that a kind of raising rocker arm is reliable
The solution of property.This solution is achieved in the following manner:
In the quiet rocker arm that lock pin component is arranged in this programme, lock pin 10 is placed in quiet rocker arm lock pin back cavity, lock
Lock pin back cavity is divided into lock pin reset space 17 and lock pin shoe cream room 16 by the reset spring mounting surface on pin shaft, and lock pin body is placed
In lockpin hole 14, lock pin body 10 is connect with the retainer ring 11 of lock pin 12, therefore the increase of the diameter of lock pin body is not by lock pin cloth
Limitation between emptying is more easier to improve the rigidity of lock pin, reduces output end so that the increase of cotter diameter be made to be easily achieved
The possibility of plastic deformation improves the reliability of rocker arm work.
Lock pin body and lock pin separate independent manufacture in this programme, are easy to lock pin component in quiet rocker arm
Installation；On the other hand, make each design of part of lock pin component simpler, reduce difficulty of processing to reduce processing cost.
Shake arm resetting-mechanism in this programme by the spring mounting hole opened on quiet rocker arm, is shaken using compressed spring realization
The reset of arm reduces the inertia and occupied space of rocker arm, and improves the service life of rocker arm；
Detailed description of the invention
Fig. 1 is a kind of structural map for two-stage variable Formula V VL rocker arm of the present invention.
Fig. 2 is the structural schematic diagram of quiet rocker arm 2 in Fig. 1.
Fig. 3 is lock pin resetting-mechanism structural schematic diagram in Fig. 1.
Component token name claims in figure: 1- positioning pin, the quiet rocker arm of 2-, 3- return spring holder, 4- reset spring, 8- lock pin spring
Seat, 9- lock pin spring, 10- lock pin, 11- retainer ring, 12- lock pin body, 13- shake arm, 14- lockpin hole, and 15- lock pin neck is convex
It rises, 16- lock pin shoe cream room, 17-lock pin reset spaces, 18- reset spring mounting hole, 19- shakes arm crossbeam.
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.
As shown in Figure 1, a kind of stagewise lock pin resetting-mechanism for two-stage variable VVL rocker arm, mainly by lock pin body
12, retainer ring 11, lock pin 10, lock pin spring 9, lock pin mounting hole 14 and latch gear are multiple in lock pin spring seat 8 and quiet rocker arm
Bit space 17, lock pin neck protrusion 15 form；
12 bottom surface of lock pin and the bottom surface of lock pin neck protrusion 16, which are formed in lock pin mounting hole, forms lock pin oil storage space
16；
Installation space constitutes latch gear reset space on lock pin shaft tail end and lock pin spring seat 8,
Lock pin component is made of lock pin body 12 and lock pin 10 and retainer ring 11, wherein in lock pin insertion lock pin body, with card
Circle connection；Such detent configuration is simple, reduces processing cost；
Lockpin hole 14 and latch gear reset space 16 are separated by lock pin neck protrusion 15, and 12 diameter of lock pin body is greater than lock
Pin shaft 10, it is possible to the increase of 12 diameter of lock pin body be made not influence the arrangement that lock pin installs empty latch gear reset space；
Therefore the arrangement difficulty for increasing the diameter of lock pin body 12 is reduced, to enhance the rigidity of lock pin, reduces lock pin modeling
Property deformation possibility, to improve rocker arm functional reliability；
As shown in figure 1, shake arm resetting-mechanism by quiet priming lever spring mounting hole 18, reset spring 4, return spring holder 3, and
Shake the composition of arm crossbeam 19, return spring holder 3 and crossbeam 19 cooperate, realize under the action of return spring force and shake answering for arm
Position,
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 (5)
1. a kind of two-stage variable rocker arm for engine, comprising:
Shake arm (13), which is characterized in that space is provided between two tracks, for placing quiet rocker arm and idler wheel；And it is leaning on
One end of nearly valve is provided with the connecting link pin that arm is shaken in connection, and being made to shake between arm and quiet rocker arm by the connecting link pin can be with
There is relative rotation；And lock pin stopper section, the stopper section provide support when lock pin works；
Quiet rocker arm (2), by positioning pin with shake that arm is relatively turnable to be coupled, and by the locking of lock pin component and open two
Kind of state is realized relative to the two kinds of working conditions of static and relative motion for shaking arm；And lockpin hole (14) are provided with, it uses
In placement lock pin, and form oil storage space (16) and lock pin reset space (17)；
Lock pin component (8,9,10,11,12), the component make lock pin default lockup state by lock pin spring postposition, hydraulic oil and
The interaction of lock pin spring is to realize the two kinds of working conditions of static and relative motion for shaking arm relative to quiet rocker arm；
Shake arm resetting-mechanism (3,4), the component is by spring mounting hole (18), the reset spring (4) on quiet rocker arm, reset spring
Seat (3) shakes arm crossbeam (19) composition, when lock pin is in unlock state, shakes arm (13) and is shaken by return spring force realization
Arm by extreme lower position to extreme higher position reset；
The lock pin component is arranged among quiet rocker arm (2)；The lock pin component is by lock pin body (12) lock pin (10), lock pin
Spring (9), lock pin spring seat (8) and retainer ring (11) are constituted；Lock pin (10) and lock pin body (12) are riveted by retainer ring (11).
2. two-stage variable rocker arm according to claim 1, which is characterized in that the lock pin body is the cylinder for having chamber in one kind
Pin.
3. two-stage variable rocker arm according to claim 1, which is characterized in that the working face and latch gear in lockpin hole are multiple
Bit space is separated by quiet rocker arm lock pin neck raised (15).
4. two-stage variable rocker arm according to claim 1, which is characterized in that shaken with quiet in the spring mounting hole face on lock pin
Arm inner cavity surface forms sealing surface.
5. two-stage variable rocker arm according to claim 1, it is characterised in that the arm resetting-mechanism that shakes is installed by spring
Hole (18), reset spring (4), return spring holder (3) composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510646985.XA CN105298572B (en) | 2015-10-09 | 2015-10-09 | A kind of two-stage variable rocker arm for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510646985.XA CN105298572B (en) | 2015-10-09 | 2015-10-09 | A kind of two-stage variable rocker arm for engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105298572A CN105298572A (en) | 2016-02-03 |
| CN105298572B true CN105298572B (en) | 2019-02-26 |
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ID=55196291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510646985.XA Active CN105298572B (en) | 2015-10-09 | 2015-10-09 | A kind of two-stage variable rocker arm for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105298572B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102017114933B3 (en) * | 2017-07-05 | 2018-08-23 | Schaeffler Technologies AG & Co. KG | Variable valve train of a combustion piston engine |
| CN111173584A (en) * | 2018-11-13 | 2020-05-19 | 舍弗勒技术股份两合公司 | Latching mechanism for a switchable rocker arm and internal combustion engine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7318402B2 (en) * | 2005-11-21 | 2008-01-15 | Eaton Corporation | Dual lift rocker arm latch mechanism and actuation arrangement therefor |
| EP2050933A1 (en) * | 2007-10-17 | 2009-04-22 | Delphi Technologies, Inc. | Valve operating system comprising a two-step roller finger follower |
| CN203547817U (en) * | 2013-11-14 | 2014-04-16 | 东风汽车公司 | Variable rocker arm |
| CN203640792U (en) * | 2013-12-09 | 2014-06-11 | 绵阳富临精工机械股份有限公司 | Two-stage rocker for variable valve lift system |
| CN204082243U (en) * | 2014-09-11 | 2015-01-07 | 绵阳富临精工机械股份有限公司 | A kind of changeable air valve depression bar |
| CN205260086U (en) * | 2015-10-09 | 2016-05-25 | 绵阳富临精工机械股份有限公司 | A variable rocking arm of two -stage for engine |
-
2015
- 2015-10-09 CN CN201510646985.XA patent/CN105298572B/en active Active
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| Publication number | Publication date |
|---|---|
| CN105298572A (en) | 2016-02-03 |
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