CN203730087U - Engine valve structure - Google Patents
Engine valve structure Download PDFInfo
- Publication number
- CN203730087U CN203730087U CN201420056975.1U CN201420056975U CN203730087U CN 203730087 U CN203730087 U CN 203730087U CN 201420056975 U CN201420056975 U CN 201420056975U CN 203730087 U CN203730087 U CN 203730087U
- Authority
- CN
- China
- Prior art keywords
- convex arc
- arc surface
- valve
- rocking arm
- valve stem
- 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.)
- Expired - Fee Related
Links
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- Valve-Gear Or Valve Arrangements (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses an engine valve structure. The engine valve structure comprises a valve rod, a rocker arm and a convex arc surface. The engine valve structure is characterized in that the valve is provided with the valve rod (1), the rocker arm (2) is arranged on the top surface of the valve rod (1), the convex arc surface (3) of the valve rod (1) is arranged below the end of the rocker arm (2), and the end face of the valve rod (1) is the convex arc surface (3). The SR projection height H of the convex arc surface (3) ranges from 0.005 mm to 0.01 mm. When the convex arc surface makes contact with the arc surface of the rocker arm, sliding friction can be relieved, a wedge-shaped oil film can be added between the convex arc surface and the arc surface of the rocker arm, lubrication is improved, and abrasion is reduced. The engine valve structure is simple, easy to manufacture, and convenient to install and use, and has the good contact surfaces.
Description
Technical field
The utility model is for Engine Industry, and feature is a kind of engine valve structure.
Background technique
Valve is according to port timing requirement, meets engine breathing requirement.Valve is the part that bears higher thermal load and stress in motor, when engine operation, its rod end surface (plane) contacts with rocking arm arc surface, rocking arm arc surface along valve stem end face roll and slide mobile, because relative sliding produces friction, easily cause valve and rocking arm surface of contact to wear and tear simultaneously.
Summary of the invention
The purpose of this utility model is to provide one to overcome existing air valve structure, and rod end surface is plane, have larger sliding-frictional resistance, and the wearing and tearing on rocking arm and valve rod end surface is mainly because friction causes.It is convex arc (sphere) structure valve that the application proposes a kind of rod end surface, thereby contacts by minimizing a kind of engine valve structure simple in structure, easy to manufacture, easy to use that reduces frictional force.
Technical solution of the present utility model is such, a kind of engine valve structure, comprise valve stem, rocking arm, convex arc dignity, it is characterized in that valve is provided with valve stem (1), valve stem (1) end face is rocking arm (2); under the termination of rocking arm (2), be the convex arc dignity (3) of valve stem (1), valve stem (1) end face is convex arc dignity (3).
The height of projection H of the Spherical Surface S R of convex arc dignity (3) is between 0.005～0.01mm.
The utility model beneficial effect is compared with prior art that bar end surface structure is convex arc sphere valve, in the time contacting with rocking arm arc surface, can reduce sliding friction, can increase the wedge-shaped oil film between rocking arm arc surface and bar end surface simultaneously, improve lubrication circumstances, thereby avoid or reduce wear.Safe and reliable, function admirable, easy to manufacture, easy to use, energy-saving and cost-reducing.
Brief description of the drawings
Fig. 1 is the installation assembling schematic diagram of a kind of engine valve structure of the utility model.
Fig. 2 is the overall structure figure of the valve stem of a kind of engine valve structure of the utility model.
Fig. 3 is that the valve stem end-face structure of a kind of engine valve structure of the utility model is analysed and observe enlarged diagram.
Reference character: valve stem (1), rocking arm (2), convex arc dignity (3).
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
Embodiment 1, exist and produce wearing and tearing compared with large sliding friction power-assisted with valve stem (1) end face for overcoming rocking arm (2), note mutually requirement according to distribution simultaneously, the requirement of slip engine breathing, consider that in addition in motor, bearing higher thermal loads and stress, when engine operation, its rod end surface contacts with rocking arm arc surface, rocking arm arc surface along valve stem end face roll and slide mobile, because relative sliding produces friction, cause easy to wear, it is in this, we have designed the valve stem (1) of a brand new ideas, be designed to convex arc dignity (3) in valve stem (1) rod end surface.Like this, valve is point-line-surface contact while contact with rocking arm (2), reaches and not only seals but also the object of less wear.The Spherical Surface S R height of projection H of convex arc dignity (3) is between 0.005～0.01mm.Bar end surface structure is convex arc sphere valve, in the time contacting with rocking arm arc surface, can reduce sliding friction, can increase the wedge-shaped oil film between rocking arm arc surface and bar end surface simultaneously, improves lubrication circumstances, thereby avoids or reduce wear.Safe and reliable, function admirable, easy to manufacture, easy to use, energy-saving and cost-reducing.
Embodiment 2, a kind of engine valve structure, comprise valve stem, rocking arm, convex arc dignity, it is characterized in that valve is provided with valve stem (1), valve stem (1) end face is rocking arm (2); under the termination of rocking arm (2), be the convex arc dignity (3) of valve stem (1), valve stem (1) end face is convex arc dignity (3).The Spherical Surface S R height of projection H of convex arc dignity (3) is between 0.005～0.01mm.
Claims (2)
1. an engine valve structure, comprise valve stem, rocking arm, convex arc dignity, it is characterized in that valve is provided with valve stem (1), valve stem (1) end face is rocking arm (2); under the termination of rocking arm (2), be the convex arc dignity (3) of valve stem (1), valve stem (1) end face is convex arc dignity (3).
2. according to a kind of engine valve structure claimed in claim 1, it is characterized in that the Spherical Surface S R height of projection H of convex arc dignity (3) is between 0.005～0.01mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420056975.1U CN203730087U (en) | 2014-01-29 | 2014-01-29 | Engine valve structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420056975.1U CN203730087U (en) | 2014-01-29 | 2014-01-29 | Engine valve structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203730087U true CN203730087U (en) | 2014-07-23 |
Family
ID=51200167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420056975.1U Expired - Fee Related CN203730087U (en) | 2014-01-29 | 2014-01-29 | Engine valve structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203730087U (en) |
-
2014
- 2014-01-29 CN CN201420056975.1U patent/CN203730087U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20190129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |