CN107795352A - A kind of rocker arm body - Google Patents
A kind of rocker arm body Download PDFInfo
- Publication number
- CN107795352A CN107795352A CN201710941283.3A CN201710941283A CN107795352A CN 107795352 A CN107795352 A CN 107795352A CN 201710941283 A CN201710941283 A CN 201710941283A CN 107795352 A CN107795352 A CN 107795352A
- Authority
- CN
- China
- Prior art keywords
- rocker arm
- lift
- needle bearing
- inner rocker
- high lift
- 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.)
- Granted
Links
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
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0005—Deactivating valves
-
- 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
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L1/053—Camshafts overhead type
-
- 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
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0021—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of rocker arm ratio
-
- 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
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L2001/0471—Assembled camshafts
-
- 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
-
- 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
- F01L13/0005—Deactivating valves
- F01L2013/001—Deactivating cylinders
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
A kind of rocker arm body, it includes：The inner rocker arm and outer rocker arm being rotatablely connected through connecting shaft, and the camshaft in portion disposed thereon, outer rocker arm is U-shaped and is rotatably connected to basic circle needle bearing in two trailing arm bodies；The rectangular type of inner rocker arm and on the inside of two trailing arms and including：Low lift inner rocker arm and high lift inner rocker arm, low lift needle bearing is rotatably connected in the body of low lift inner rocker arm, high lift needle bearing is rotatably connected in the body of high lift inner rocker arm；Cam portion on camshaft includes：Basic circle needle bearing and the lift cams being connected simultaneously with low lift needle bearing and high lift needle bearing phase cam contact, one cam of its need achieve that the low lift mode of operation of cylinder deactivation high lift.
Description
Technical field
The present invention is on a kind of rocker arm body.
Background technology
As energy-conservation and environmental protection concept become increasingly popular, automotive energy-saving emission-reducing is more taken seriously, and engine variable gas
Door lift technology is to realize an effective means of automotive energy-saving emission-reducing.For reply climbing and accelerating mode, the work(of engine
Rate have it is more than needed, so automobile power of engine when running at a low speed has a very big waste, and engine variable valve lift
Technology can change the lift of valve under different operating modes, so as to change engine power, can both make full use of engine work(
Rate, fuel consumption can be reduced again, reduce waste gas discharge, have the function that energy-conserving and environment-protective.
At present, most of variable air valve lift range mechanisms be cam displacement, more cams, inside and outside rocker arm body, wherein inside and outside shake
Arm mechanism can only realize cylinder deactivation or height lift variation mostly, and mechanism is complicated, and cost is higher.
Cylinder deactivation-normal or high lift-mode of operation of low lift two can only be realized in the prior art, it is impossible to while realize and stop
Cylinder-high lift-low lift mode of operation；Lock pin and lock pin spring are arranged in inner rocker arm, and inner rocker arm has relative fortune with outer rocker arm
Dynamic oil circuit difficult design, sealing are poor；And two mode of operations are required for two various sizes of cams, complex process.
The content of the invention
The purpose of the present invention is to realize the interior outer rocker arm controlling organization that high lift, low lift, cylinder deactivation are integrated.
To realize above-mentioned technical purpose, the present invention provides a kind of rocker arm body, and it includes：Through in connecting shaft rotation connection
Rocking arm and outer rocker arm, and the camshaft positioned at the inner rocker arm and the outer rocker arm top, wherein：The outer rocker arm is U-shaped
And it is rotatably connected to basic circle needle bearing in the mounting hole in its two trailing arms body；The rectangular type of the inner rocker arm is simultaneously located at institute
State on the inside of two trailing arms of outer rocker arm and including：Low lift inner rocker arm and high lift inner rocker arm, in the sheet of the low lift inner rocker arm
Rotation connection is disposed with low lift needle bearing in mounting hole in body, the mounting hole in the body of the high lift inner rocker arm
Middle rotation connection is disposed with high lift needle bearing；And the cam portion on the camshaft includes：Positioned at both sides and with it is described
Basic circle needle bearing phase cam contact connection basic circle cam, and positioned at middle part and simultaneously with the low lift needle bearing and institute
State the lift cams of high lift needle bearing phase cam contact connection.
As a further improvement, the basic circle cam is the cylinder for waiting radius.
As a further improvement, the lift cams include：The face of cylinder of the low lift needle bearing is driven, and is driven
Move the cam surface of the high lift needle bearing.
As a further improvement, the connecting shaft is located at the top of two trailing arms of the outer rocker arm, and the connecting shaft
With two sections and respectively by the top of the low lift inner rocker arm and the high lift inner rocker arm and two trailing arms of the outer rocker arm
Rotation connection.
As a further improvement, the outer rocker arm two trailing arms bottom have respectively with the low lift inner rocker arm
The lock pin and lock pin return spring connected with the high lift inner rocker arm.
As a further improvement, the bottom of the low lift inner rocker arm and high lift inner rocker arm has return convex respectively
Platform, the lower surface arrangement of the return boss have inner rocker arm return spring.
As a further improvement, the bottom of the transverse arm of the outer rocker arm is disposed with hydraulic tappet, and in the low lift
The lower end of rocking arm and high lift inner rocker arm is connected to valve.
The present invention only needs a cam to achieve that cylinder deactivation-high lift-low lift mode of operation；Lock pin and lock pin spring cloth
Put in outer rocker arm, improve sealing, oil circuit arrangement is simple；Different working modes correspond to different dimensioned bearings, it is not necessary to change convex
Size of wheel, only need a cam.
Brief description of the drawings
Fig. 1 is schematic appearance of the present invention；
Fig. 2 is the present invention and camshaft cooperation schematic diagram；
Fig. 3 is exploded perspective view of the present invention；
Fig. 4 is inner rocker arm and valve schematic diagram；With
Fig. 5 is outer rocker arm schematic diagram.
Reference：Outer rocker arm 1；Basic circle needle bearing 2；Low lift inner rocker arm 3；High lift inner rocker arm 4；Low lift needle roller
Bearing 5；High lift needle bearing 6；Camshaft 7；Connecting shaft 8；Basic circle cam 9；Lift cams 10；Lock pin 11；Lock pin return bullet
Spring 12；Return boss 13；Inner rocker arm return spring 14；Hydraulic tappet 15；Valve 16.
Embodiment
As shown in Fig. 1 to 5, the present invention provides a kind of rocker arm body, and it includes：The inner rocker arm being rotatablely connected through connecting shaft 8
With outer rocker arm 1, and the camshaft 7 positioned at the inner rocker arm and the top of the outer rocker arm 1, wherein：The outer rocker arm 1 is U-shaped
And it is rotatably connected to basic circle needle bearing 2 in the mounting hole in its two trailing arms body；The rectangular type of the inner rocker arm is simultaneously located at
On the inside of two trailing arms of the outer rocker arm 1 and including：Low lift inner rocker arm 3 and high lift inner rocker arm 4, in the low lift inner rocker arm
Rotation connection is disposed with low lift needle bearing 5 in mounting hole in 3 body, in the body of the high lift inner rocker arm 4
Mounting hole in rotation connection be disposed with high lift needle bearing 6；And the cam portion on the camshaft 7 includes：Positioned at two
Side and the basic circle cam 9 being connected with the phase cam contact of basic circle needle bearing 2, and positioned at middle part and simultaneously with the low lift
The lift cams 10 that needle bearing 5 connects with the phase cam contact of high lift needle bearing 6.
Basic circle needle bearing is arranged in outer rocker arm, impact when reducing rocker-arm return to cam；Low lift needle bearing
In low lift inner rocker arm, low lift is realized；High lift needle bearing is arranged in high lift inner rocker arm, realizes promotion
Journey.
As a further improvement, the basic circle cam 9 is the cylinder for waiting radius.
As a further improvement, the lift cams 10 include：The face of cylinder of the low lift needle bearing 5 is driven,
With the cam surface for driving the high lift needle bearing 6.
As a further improvement, the connecting shaft 8 is located at the top of two trailing arms of the outer rocker arm 1, and the connection
Axle 8 has two sections and respectively by the low lift inner rocker arm 3 and two trailing arms of the high lift inner rocker arm 4 and the outer rocker arm 1
Top rotation connection.
As a further improvement, have in the bottom of two trailing arms of the outer rocker arm 1 respectively with being shaken in the low lift
Arm 3 and the lock pin 11 and lock pin return spring 12 of the high lift inner rocker arm 4 connection.
Have two holes on the trailing arm of outer rocker arm, upside aperture is blind hole, and downside macropore is through hole, upside aperture be lock pin and
Lock pin spring mounting hole, outer rocker arm connecting shaft in the connection of downside macropore, has two boss on transverse arm, for installing inner rocker arm return
Spring.Corresponding, the sidepiece of inner rocker arm has two holes, and upside aperture is blind hole, and downside macropore is through hole, and upside aperture is used for
Outer rocker arm in lock pin locking, outer rocker arm connecting shaft in the connection of downside macropore, outer rocker arm combines in realization.There is blind hole on the inside of inner rocker arm
For installing needle bearing.The return boss 13 of inner rocker arm is used to install inner rocker arm return spring.
As a further improvement, the bottom of the low lift inner rocker arm 3 and high lift inner rocker arm 4 has return convex respectively
Platform 13, the lower surface arrangement of the return boss have inner rocker arm return spring 14.
Lock pin return spring 12 connects outer rocker arm and lock pin, when hydraulic tappet fuel cut-off, lock pin is returned to inside and outside shake
Between arm, the locking of internal outer rocker arm is realized；Inner rocker arm return spring 14 connects interior outer rocker arm, controls inner rocker arm to return during cylinder deactivation
Position.
As a further improvement, the bottom of the transverse arm of the outer rocker arm 1 is disposed with hydraulic tappet 15, and the low lift
The lower end of inner rocker arm 3 and high lift inner rocker arm 4 is connected to valve 16.
The present invention only needs a cam to achieve that cylinder deactivation-high lift-low lift mode of operation；Lock pin and lock pin spring cloth
Put in outer rocker arm, improve sealing, oil circuit arrangement is simple；Different working modes correspond to different dimensioned bearings, it is not necessary to change convex
Size of wheel, only need a cam.
As shown in the figure in rocker arm body, outer rocker arm in interior outer rocker arm connecting shaft connection, make inner rocker arm can be around the axle with shaking outside
Arm produces relative movement；Rocking arm separation is with engaging inside and outside lock pin control, lock pin return spring control lock pin return；Inner rocker arm return
Inner rocker arm return when spring makes inside and outside rocking arm separation, and keep contacting with cam.Needle bearing and cam contact in rocking arm, wherein
Basic circle needle bearing and basic circle cam contact in outer rocker arm, stability when improving mechanism work, outer rocker arm connect in interior outer rocker arm
Lower end contacts with valve and valve spring at spindle, and its left and right ends respectively connects a valve stem, realizes the promotion of two valves
Journey-low lift-zero lift control.
Working method：
High lift mode：Lock pin is due to the effect of lock pin return spring and between interior outer rocker arm, interior outer rocker arm engagement, cam
Act at high lift needle bearing, outer rocker arm mass motion in drive, so as to promote valve stem valve is in high lift shape
State；
Low lift mode：Due to hydraulic pressure, quickly post oil pressure is pressed into outer rocker arm the lock pin of high lift inner rocker arm, promotion
Journey inner rocker arm separates with outer rocker arm, is moved when cam acts on around interior outer rocker arm connecting shaft, is not involved in valve stroke control, and passes through
Inner rocker arm return spring act on, all the time with cam contact, safeguard work stability.The lock pin of low lift inner rocker arm is still in inside and outside
Between rocking arm, therefore, cam acts on low lift needle bearing, drives low lift inner rocker arm to be moved with outer rocker arm, so as to promote gas
Door rod makes valve be in low lift condition；
Deactivation mode：Due to hydraulic pressure, quickly post oil pressure is pressed into outer rocker arm the lock pin of height lift inner rocker arm, height
Lift inner rocker arm separates with outer rocker arm, is moved when cam acts on around interior outer rocker arm connecting shaft, is not involved in valve stroke control.Cause
This, basic circle cam acts on basic circle needle bearing, and outer rocker arm does not move, so that valve is in zero lift, realizes cylinder deactivation.
It should be appreciated that invention which is intended to be protected is not limited to non-limiting embodiments, it should be understood that non-limiting embodiment party
Case illustrates as just example.The desired substantive protection domain of the application is more embodied in independent claims offer
Scope, and its dependent claims.
Claims (7)
1. a kind of rocker arm body, it includes：The inner rocker arm and outer rocker arm (1) being rotatablely connected through connecting shaft (8), and positioned at described
Inner rocker arm and the camshaft (7) on the outer rocker arm (1) top, it is characterised in that：
The outer rocker arm (1) is U-shaped and mounting hole in its two trailing arms body in be rotatably connected to basic circle needle bearing (2)；
The rectangular type of the inner rocker arm and on the inside of two trailing arms of the outer rocker arm (1) and including：Low lift inner rocker arm (3) and
High lift inner rocker arm (4), in the mounting hole in the body of the low lift inner rocker arm (3) rotation connection be disposed with low lift rolling
Needle bearing (5), in the mounting hole in the body of the high lift inner rocker arm (4) rotation connection be disposed with high lift needle bearing
(6)；And
Cam portion on the camshaft (7) includes：Connect positioned at both sides and with basic circle needle bearing (2) the phase cam contact
The basic circle cam (9) connect, and positioned at middle part and simultaneously with the low lift needle bearing (5) and the high lift needle bearing
(6) lift cams (10) of phase cam contact connection.
A kind of 2. rocker arm body as claimed in claim 1, it is characterised in that：The basic circle cam (9) is the cylinder for waiting radius.
A kind of 3. rocker arm body as claimed in claim 1, it is characterised in that：The lift cams (10) include：Described in driving
The face of cylinder of low lift needle bearing (5), and the cam surface of the driving high lift needle bearing (6).
A kind of 4. rocker arm body as claimed in claim 1, it is characterised in that：The connecting shaft (8) is located at the outer rocker arm (1)
Two trailing arms top, and the connecting shaft (8) has two sections and respectively by the low lift inner rocker arm (3) and the high lift
The top of inner rocker arm (4) and two trailing arms of the outer rocker arm (1) is rotatablely connected.
A kind of 5. rocker arm body as claimed in claim 4, it is characterised in that：In the bottom of two trailing arms of the outer rocker arm (1)
With the lock pin (11) and lock pin return bullet being connected respectively with the low lift inner rocker arm (3) and the high lift inner rocker arm (4)
Spring (12).
A kind of 6. rocker arm body as claimed in claim 1, it is characterised in that：In the low lift inner rocker arm (3) and high lift
The bottom of rocking arm (4) has return boss (13) respectively, and the lower surface arrangement of the return boss has inner rocker arm return spring
(14)。
A kind of 7. rocker arm body as claimed in claim 1, it is characterised in that：The bottom arrangement of the transverse arm of the outer rocker arm (1)
There is hydraulic tappet (15), and the lower end of the low lift inner rocker arm (3) and high lift inner rocker arm (4) is connected to valve
(16)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710941283.3A CN107795352B (en) | 2017-10-11 | 2017-10-11 | Rocker arm mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710941283.3A CN107795352B (en) | 2017-10-11 | 2017-10-11 | Rocker arm mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107795352A true CN107795352A (en) | 2018-03-13 |
| CN107795352B CN107795352B (en) | 2019-12-31 |
Family
ID=61533903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710941283.3A Active CN107795352B (en) | 2017-10-11 | 2017-10-11 | Rocker arm mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107795352B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5042437A (en) * | 1989-11-02 | 1991-08-27 | Nissan Motor Company | Rocker arm arrangement for variable timing valve train |
| CN101161998A (en) * | 2006-10-10 | 2008-04-16 | 现代自动车株式会社 | Cylinder deactivation system for vehicle and variable valve lift system using the same |
| 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 |
| CN104321503A (en) * | 2011-12-09 | 2015-01-28 | 克莱斯勒集团有限责任公司 | Rocker arm providing cylinder deactivation |
-
2017
- 2017-10-11 CN CN201710941283.3A patent/CN107795352B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5042437A (en) * | 1989-11-02 | 1991-08-27 | Nissan Motor Company | Rocker arm arrangement for variable timing valve train |
| CN101161998A (en) * | 2006-10-10 | 2008-04-16 | 现代自动车株式会社 | Cylinder deactivation system for vehicle and variable valve lift system using the same |
| CN104321503A (en) * | 2011-12-09 | 2015-01-28 | 克莱斯勒集团有限责任公司 | Rocker arm providing cylinder deactivation |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107795352B (en) | 2019-12-31 |
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