CN1560438A - Motor valve rocker arm combination - Google Patents
Motor valve rocker arm combination Download PDFInfo
- Publication number
- CN1560438A CN1560438A CNA2004100220084A CN200410022008A CN1560438A CN 1560438 A CN1560438 A CN 1560438A CN A2004100220084 A CNA2004100220084 A CN A2004100220084A CN 200410022008 A CN200410022008 A CN 200410022008A CN 1560438 A CN1560438 A CN 1560438A
- Authority
- CN
- China
- Prior art keywords
- rocking arm
- guide pad
- screw rod
- valve
- oscillating beam
- 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
Images
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention discloses an oscillating beam compound for engine air gate, the screw stem penetrates the oscillating beam and connected with the adjusting nut screw, the character lies in: a guiding block is arranged between the oscillating beam and the adjusting nut, the guiding block is covered out of the middle part of the screw stem and matches with the screw stem gap, the guiding block is inserted into the concave slot of the oscillating beam and matches with the oscillating beam. The invention can make the air gate oscillating beam to move directively according to the distribution gas phase, and it eliminates the pushing pole bracket of the air gate, eliminates the friction between the air gate pushing pole and the bracket, and guarantees the stability of the engine power.
Description
Technical field
The invention belongs to a kind of engine valve driving mechanism, the mini engine valve rocker combination that particularly a kind of orientation works is stable.
Background technique
Internal-combustion engine overhead valve driving mechanism adopts valve rocker to do directional swing around pitman arm shaft more.Its structure mainly is made up of a plurality of component such as valve rocker, pitman arm shaft, rocker arm support, valve clearance adjustment screw rods, the structure more complicated, and volume is bigger, and manufacture cost is higher relatively.The petrolic valve actuating mechanism of Japanese honda Small Universal does not have pitman arm shaft and rocker arm support, though it is relatively simple for structure, but there is the unreasonable part of structural design, the bottom portion of groove of its valve rocker is spherical shape, adjusting the nut body bottom also is spherical shape, valve rocker is around adjusting nut body bottom spherical motion, and degrees of freedom is big.In rocking arm when work,, rocking arm can axially shake along adjusting nut body bottom sphere, also can do circumferentially to swing around adjusting nut body bottom sphere, can not guarantee that rocking arm does orientation movement according to need of work.When rocking arm occurs when adjustment nut body bottom sphere is made circumferential swing state, valve actuating push rod can break away from the depression from rocking arm, so the artificer is in order to prevent that rocking arm is because of circumferentially swing is excessive around adjusting nut body bottom sphere, and cause breaking away from the depression of valve actuating push rod from rocking arm, just be provided with the valve actuating push rod support valve actuating push rod is made guide and limit, control the swing of rocking arm by the swing of pusher bar support control valve actuating push rod.Yet, because of circumferentially swing appears in reasons such as vibration, must cause valve actuating push rod to produce friction with pusher bar support during valve rocker work, form the switching time of drag effects valve with the rocking arm swing, cause the power instability of motor, also can produce friction noise simultaneously.And valve actuating push rod and pusher bar support rub for a long time, also pusher bar support can be worn and torn, when pusher bar support may wear to a certain degree, valve actuating push rod is with regard to the swing of uncontrollable rocking arm, and valve actuating push rod still can be deviate from from the rocking arm depression, causes engine operation to stop.
Summary of the invention
The purpose of this invention is to provide a kind of engine valve rocking arm combination, it can make valve rocker do orientation movement by the port timing requirement, has cancelled the valve actuating push rod support again, has eliminated the friction of valve actuating push rod and support, has guaranteed the stable of engine power.
For reaching above-mentioned purpose, the screw rod of engine valve rocking arm of the present invention combination passes rocking arm and adjusts nut thread and is connected; rocking arm is provided with guide pad with adjusting between the nut, and guide pad is enclosed within adjustment screw rod stage casing and cooperates with the adjustment screw clearance, in the groove of guide pad insertion rocking arm with the rocking arm Spielpassung.
Owing to adopted said structure, the guide pad that is provided with between rocking arm and the adjustment nut can circumferentially not rotated guide pad around adjusting screw rod by circumferentially spacing on the adjustment screw rod.And the arc surface of guide pad bottom cooperates with the groove arc surface of rocking arm, and rocking arm can circumferentially not swung around adjusting screw rod, can only do orientation movement along the arc surface of guide pad lower end, and valve actuating push rod just can not break away from the depression from rocking arm.So cancelled the valve actuating push rod support, eliminated the friction of valve actuating push rod and support, guaranteed the stable of engine power, removed friction noise simultaneously.
The invention will be further described below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is a structure diagram of the present invention;
Fig. 2 is that the A-A of Fig. 1 is to sectional view;
Fig. 3 is a kind of embodiment of the present invention.
Embodiment
Referring to Fig. 1, Fig. 2, screw rod 1 has the adjustment screw rod of opener groove for the top, three sections of 1 fen upper, middle and lowers of screw rod, and its upper and lower section has screw thread, the stage casing smooth surface.Screw rod 1 hypomere is threaded on the cylinder head 9, and with nut 2 fastening (as shown in Figure 3).Rocking arm 3 and guide pad 4 are enclosed within the stage casing of screw rod 1 successively, and the epimere that nut 5 is threaded in screw rod 1 is adjusted in the valve clearance.The bottom of the groove of rocking arm 3 is an arc surface, and there is a flat hole bottom, and screw rod 1 passes flat Kong Bingneng and laterally slides in flat hole.Contact with nut 2 on screw rod 1 hypomere at the bottom of the groove ends of rocking arm 3, the circular arc at the bottom of the groove ends of rocking arm 3 can be shaken on the plane of nut 2 flexibly, nut 2 has also limited rocking arm 3 downward axial position on screw rod 1 simultaneously.Guide pad 4 bottoms are arc surface, and insert in the groove of rocking arm 3 the arc surface Spielpassung with groove, and rocking arm 1 can only be moved along the arc surface of guide pad 4.The arc surface of guide pad 4 is provided with through hole and connects guide pad 4 upper and lower end, and the hole wall of its through hole is provided with a keyway.Screw rod 1 stage casing is provided with a key 7, and guide pad 4 is enclosed within screw rod 1 stage casing and screw rod 1 Spielpassung, and the key 7 on the screw rod 1 and the keyway Spielpassung of guide pad 4 hole walls make guide pad 4 by circumferentially spacing on screw rod 1, can only endwisely slip along screw rod 1.Because guide pad 4 is by circumferentially spacing on screw rod 1, and the arc surface of guide pad 4 inserts in the arc surface groove of rocking arm 3 Spielpassung with it, groove arc surface two side planes that cause rocking arm 3 are simultaneously near the two side plane work of guide pad 4 arc surfaces, and the rocking arm 3 circumferentially degrees of freedom of swing is restricted.The bottom that nut 5 is adjusted in the valve clearance is a cylinder, and the plane at the bottom of the cylinder contacts with guide pad 4, the axial position that restricted guidance piece 4 makes progress on screw rod 1.Valve clearance locking nut 6 is installed in screw rod 1 epimere, and nut 5 locking and positioning are adjusted in the valve clearance.
The wide direction in the same way that keyway on guide pad 4 hole walls is located at guide pad 4 is best.
Referring to Fig. 3, valve rocker stack mounting of the present invention is on cylinder head 9, be fastened on the cylinder head 9 according to valve Height Adjustment nut 2 and with screw rod 1, adjust the valve clearance and adjust nut 5, make the rocking arm 1 can be along the arc surface flexible motion of guide pad 4, be fit to the requirement of distribution gap again, use valve clearance locking nut 6 locking and positioning then.The sphere of valve actuating push rod 8 upper ends withstands in the sphere depression of rocking arm 1 one ends, and the sphere of valve actuating push rod 8 lower ends is against in the sphere depression of tappet 10 upper ends, and the lower end of tappet 10 contacts with the curved surface periphery of camshaft 11.Spherical surface hill on rocking arm 1 the other end cooperates with valve 14.
During engine operation, crankshaft gear 13 drives camshaft 11 by camshaft gear wheel 12 and rotates, the curved surface periphery of camshaft 11 passes through tappet 10, valve actuating push rod 8 guiding rocking arms 1 are done regular motion by the port timing requirement, and rocking arm 1 is controlled the unlatching of valve 14 or closed.Because rocking arm 1 is directed to piece 4 and is restricted to and can only moves along guide pad 4 arc surfaces, the phenomenon around screw rod 1 circumferential swing can not appear, so valve actuating push rod 8 can be because of vibration come off, so the power stability of motor is reliable from the sphere depression of rocking arm 1.
Claims (5)
1. engine valve rocking arm combination, screw rod (1) passes rocking arm (3) and is threaded with adjustment nut (5), it is characterized in that: between rocking arm (3) and the adjustment nut (5) guide pad (4) is set, guide pad (4) is enclosed within screw rod (1) stage casing and screw rod (1) Spielpassung, and guide pad (4) inserts in the groove of rocking arm (3) and rocking arm (3) Spielpassung.
2. engine valve rocking arm combination according to claim 1, it is characterized in that: guide pad (4) bottom is an arc surface, and is provided with hole perforation guide pad (4) upper and lower end.
3. engine valve rocking arm combination according to claim 2, it is characterized in that: the through-hole wall of guide pad (4) is provided with keyway.
4. engine valve rocking arm combination according to claim 1, it is characterized in that: there is groove on the top of screw rod (1), and the stage casing of screw rod (1) is provided with key (7).
5. engine valve rocking arm combination according to claim 1, it is characterized in that: the bottom portion of groove of rocking arm (3) is an arc surface.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100220084A CN1560438A (en) | 2004-03-05 | 2004-03-05 | Motor valve rocker arm combination |
| CNB2004100858220A CN100340745C (en) | 2004-03-05 | 2004-10-20 | Small size universal petrol engine valve swing arm directional working mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100220084A CN1560438A (en) | 2004-03-05 | 2004-03-05 | Motor valve rocker arm combination |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1560438A true CN1560438A (en) | 2005-01-05 |
Family
ID=34440974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100220084A Pending CN1560438A (en) | 2004-03-05 | 2004-03-05 | Motor valve rocker arm combination |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1560438A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610295A (en) * | 2020-12-31 | 2021-04-06 | 隆鑫通用动力股份有限公司 | Engine valve rocker device |
-
2004
- 2004-03-05 CN CNA2004100220084A patent/CN1560438A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610295A (en) * | 2020-12-31 | 2021-04-06 | 隆鑫通用动力股份有限公司 | Engine valve rocker device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1772597A2 (en) | Valve train apparatus for 4-stroke internal combustion engine | |
| EP1835133A1 (en) | Valve timing controller, engine device having the same, and vehicle | |
| JP2007146740A (en) | Variable valve gear, and engine device and vehicle provided with same | |
| CN101571057B (en) | Variable valve actuating mechanism of engine | |
| JP2005171922A (en) | Variable valve mechanism | |
| CN201461013U (en) | Internal-combustion engine rocker assembly | |
| JP2006170188A (en) | Variable cam system | |
| CN1560438A (en) | Motor valve rocker arm combination | |
| JP2007138910A (en) | Continuously variable valve lift device of engine | |
| US9097145B2 (en) | Continuously variable valve lift actuator of engine | |
| CN208605238U (en) | A kind of valve lift adjustment mechanism and engine | |
| CN200978691Y (en) | Cam device for controlling engine valve rocking arm | |
| CN203515707U (en) | Air valve bridge and guiding device thereof | |
| CN100340745C (en) | Small size universal petrol engine valve swing arm directional working mechanism | |
| US20230025775A1 (en) | Variable valve mechanism | |
| CN102140942A (en) | Positioning mechanism of air suction swing arm shaft | |
| CN2693955Y (en) | Valve rockerarm mechanism of gasoline engine | |
| JP2019035404A (en) | Variable vale lift device of engine | |
| JP2007032513A (en) | Variable valve gear mechanism | |
| JPH11280417A (en) | Valve system mechanism for engine | |
| CN2550507Y (en) | Air distribution mechanism for ejector-pin engine of motorcycle | |
| KR100220482B1 (en) | Valve driving device | |
| JPH02223613A (en) | Valve system in internal combustion engine | |
| CN202402091U (en) | Valve and rocker combination of gasoline engine | |
| CN2775306Y (en) | Air valve swinging arm device bottom placed cam valve actuating mechanism of engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |