CN102121407A - Valve rocker of overhead cam type valve mechanism - Google Patents
Valve rocker of overhead cam type valve mechanism Download PDFInfo
- Publication number
- CN102121407A CN102121407A CN2011100741306A CN201110074130A CN102121407A CN 102121407 A CN102121407 A CN 102121407A CN 2011100741306 A CN2011100741306 A CN 2011100741306A CN 201110074130 A CN201110074130 A CN 201110074130A CN 102121407 A CN102121407 A CN 102121407A
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- valve
- valve rocker
- rocker
- cam
- rocking arm
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- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The invention discloses a valve rocker of an overhead cam type valve mechanism, belonging to the manufacturing field of an engine assembly of vehicles. The valve rocker is arranged between an overhead cam and an air valve, and the tail end of the valve rocker is fixed on a spherical connecting device through an air valve adjusting screw; the spherical connecting device comprises a spherical groove and a ball, the spherical groove is fixed on an air cylinder head, and the ball is connected with the adjusting screw; and the valve rocker is provided with a thickening strip close to a cam contact surface so that the intensity of the valve rocker and the contact area are ensured. The valve rocker of the overhead cam type valve mechanism provided by the invention can be widely applied to the engines of a motorcycle and an automobile; since the valve rocker has simpler structure and reduced size, the friction loss is reduced, the transmission efficiency is improved, and the accuracy of air distribution timing can be ensured effectively.
Description
Technical field
The present invention relates to the assembly of motor car engine, relate in particular to a kind of valve rocker of cam overhead type distribution device.
Background technique
Distribution device is the control mechanism of motor inlet and outlet, requirement according to the job order and the working procedure of cylinder, periodically open and close the inlet and outlet door, Valve Rocker Organization is the important accessory of motor, valve rocker utilizes lever to press the switching of valve, thus in motor input air and discharge waste gas after burning.As shown in Figure 1, existing motorcycle rocking arm 1 ' is in cam 2 ' and valve 3 ' top, and cam 2 ' and valve 3 ' realize that by rocking arm 1 ' rotational transform of camshaft is the to-and-fro motion of valve 3 ' in the both sides of rocking arm 1 ', but existing rocking arm 1 ' volume is bigger, has increased cost.In addition, prior art is passed through rocker-arm roller pin 4 ' fixedly rocking arm 1 ' and rocking arm 1 ' generation frictional force, and especially in use for some time, the gap of contact position increases, and the wearing and tearing of aggravation contact position cause engine noise to increase, the frictional loss increase.
Summary of the invention
Goal of the invention:, the invention provides a kind of simple in structure, valve rocker that volume takies the cam overhead type distribution device little, that frictional loss is little in order to overcome the deficiencies in the prior art.
Technological scheme: for achieving the above object, valve rocker of the present invention is arranged between overhead cam and the valve, and the rocking arm tail end is fixed in the sphere connection set by valve adjuster.The nut of valve adjuster is arranged at the top of rocking arm tail end, can adjust the position of rocking arm.The upper surface of rocker head contacts with cam, and the lower surface of rocker head contacts with valve.When camshaft drove cam rotation, rocking arm swung up and down, and drove valve reciprocation.
Described sphere connection set comprises spherical groove and spheroid, and spherical groove is fixed in cylinder head, and spheroid is connected with the adjustment screw.
Described sphere connection set can also be a universal joint, preferably ball cage universal joint.
Described rocking arm is provided with near cam contact surface and thickens bar, and thickening bar one side cocoa effectively increases area of contact, also increases the intensity of rocking arm on the other hand, has reduced plastic deformation, guarantees that the contact position of rocker head and cam is accurate.Thereby guaranteed that valve timing is more accurate.
Beneficial effect: the valve rocker of cam overhead type distribution device provided by the invention can be widely used on the motor of motorcycle and automobile; the simple volume of rocker structure reduces; valve adjuster adopts the sphere ways of connecting, and the loss of can effectively reducing friction improves transmission efficiency.Adopt this structure can guarantee that valve timing is more accurate.
Description of drawings
Fig. 1 is the structural representation of rocking arm place distribution device in the prior art;
Fig. 2 is a structural representation of the present invention;
Fig. 3 is the structural representation of sphere connection set of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done further explanation.
As shown in Figure 2, rocking arm 1 is arranged between cam 2 and the valve 3, and cam 2 adopts overhead type, and rocking arm 1 tail end is fixed in sphere connection set 5 by valve adjuster 4.The nut of valve adjuster 4 is arranged at the top of rocking arm 1 tail end, can adjust the position of rocking arm 1.Sphere connection set 5 comprises spherical groove 6 and spheroid 7, and spherical groove 6 is fixed in cylinder head, and spheroid 7 is connected with adjustment screw 4, by the scrolling realization axial motion in spherical groove 6, and reduces friction.Rocking arm 1 is provided with near cam contact surface and thickens bar 8, thickening bar 8 can effectively increase area of contact on the one hand, also increases the intensity of rocking arm 1 on the other hand, has reduced plastic deformation, the contact position of guaranteeing rocker head and cam 2 is more accurate, thereby has guaranteed that valve timing is more accurate.
When camshaft drove cam 2 rotations, rocking arm 1 fixedly swung up and down by an end of sphere connection set 5, drives valve 3 to-and-fro motion.
As preferred version of the present invention, sphere connection set 5 can adopt universal joint, preferably ball cage universal joint.
The above only is a preferred implementation of the present invention; be noted that for those skilled in the art; under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (3)
1. the valve rocker of a cam overhead type distribution device, it is characterized in that: described rocking arm (1) is arranged between overhead cam (2) and the valve (3), and rocking arm (1) tail end is fixed in sphere connection set (5) by valve adjuster (4).
2. the valve rocker of cam overhead type distribution device according to claim 1, it is characterized in that: described sphere connection set (5) comprises spherical groove (6) and spheroid (7), spherical groove (6) is fixed in cylinder head, and spheroid (7) is connected with adjustment screw (4).
3. the valve rocker of cam overhead type distribution device according to claim 1 is characterized in that: described rocking arm (1) is provided with near cam contact surface and thickens bar (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100741306A CN102121407A (en) | 2011-03-28 | 2011-03-28 | Valve rocker of overhead cam type valve mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100741306A CN102121407A (en) | 2011-03-28 | 2011-03-28 | Valve rocker of overhead cam type valve mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102121407A true CN102121407A (en) | 2011-07-13 |
Family
ID=44250051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100741306A Pending CN102121407A (en) | 2011-03-28 | 2011-03-28 | Valve rocker of overhead cam type valve mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102121407A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113468748A (en) * | 2021-07-02 | 2021-10-01 | 温州大学 | Method and device for constructing friction model of engine gas distribution device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2580122Y (en) * | 2002-10-22 | 2003-10-15 | 哈尔滨东安发动机（集团）有限公司 | Mini car front wheel driving gasoline engine |
| CN101446217A (en) * | 2008-12-31 | 2009-06-03 | 奇瑞汽车股份有限公司 | Air distribution mechanism with variable valve lift |
| CN202047875U (en) * | 2011-03-28 | 2011-11-23 | 南京金城机械有限公司 | Cam overhead type valve rocker for valve actuating mechanism |
-
2011
- 2011-03-28 CN CN2011100741306A patent/CN102121407A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2580122Y (en) * | 2002-10-22 | 2003-10-15 | 哈尔滨东安发动机（集团）有限公司 | Mini car front wheel driving gasoline engine |
| CN101446217A (en) * | 2008-12-31 | 2009-06-03 | 奇瑞汽车股份有限公司 | Air distribution mechanism with variable valve lift |
| CN202047875U (en) * | 2011-03-28 | 2011-11-23 | 南京金城机械有限公司 | Cam overhead type valve rocker for valve actuating mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113468748A (en) * | 2021-07-02 | 2021-10-01 | 温州大学 | Method and device for constructing friction model of engine gas distribution device |
| CN113468748B (en) * | 2021-07-02 | 2024-04-09 | 温州大学 | Method and device for constructing friction model of engine gas distribution device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110713 |