CN205936725U - Cooperation structure of valve stem and rocking arm - Google Patents
Cooperation structure of valve stem and rocking arm Download PDFInfo
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- CN205936725U CN205936725U CN201620741814.5U CN201620741814U CN205936725U CN 205936725 U CN205936725 U CN 205936725U CN 201620741814 U CN201620741814 U CN 201620741814U CN 205936725 U CN205936725 U CN 205936725U
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- rocking arm
- valve stem
- valve
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Abstract
The utility model relates to a cooperation structure of valve stem and rocking arm belongs to the technical field of automobile design and manufacturing. Cooperation structure of valve stem and rocking arm, including valve stem and rocking arm, the working face of rocking arm is the arc surface, the top working face of valve stem is the sphere, the arc surface with spherical becomes point contact cooperation structure. The utility model discloses a spiracular rotation has effectively been improved to the structure, and contact changes the point contact into by the line contact moreover, has effectively alleviateed wearing and tearing to the life of spare part has been prolonged, valve top surface working length has been increased in addition, the cam profile of different schemes can be be applicable to.
Description
Technical field
This utility model is related to Automobile Design and the technical field manufacturing, and more specifically, this utility model is related to one kind
Valve stem and the fit structure of rocking arm.
Background technology
Valve stem is arranged in engine cylinder head, and the effect playing sealing and controlling aerofluxuss, is important zero on electromotor
Part.In common technology, valve rod end top surface structure is plane, and rocking arm work surface is arc surface, valve top surface and rocking arm work surface
The way of contact is linear contact lay.In engine working process, valve can not effectively rotate；And valve top surface is connect with rocking arm work surface
Tactile mode is linear contact lay, and during work, contact surface is big, easily causes parts wear.
Utility model content
In order to solve above-mentioned technical problem of the prior art, the purpose of this utility model be to provide a kind of valve stem with
The fit structure of rocking arm.
In order to realize above-mentioned utility model purpose, this utility model employs technical scheme below：
A kind of valve stem and the fit structure of rocking arm, including valve stem and rocking arm；It is characterized in that：The work of described rocking arm
Face is arc surface, and the top work surface of described valve stem is sphere, and described arc surface and described sphere form point and be engaged knot
Structure.
Wherein, valve stem includes the elongated body of rod, and the top of the described body of rod is set with valve spring, described valve spring
Lower end is spacing by annular boss, and the upper end of described valve spring is spacing by spring base.
Wherein, the bottom of the described body of rod is provided with valve seating.
Compared with prior art, valve stem described in the utility model and the fit structure of rocking arm have following beneficial effect
Really：
Structure of the present utility model effectively improves the rotation of valve, and the way of contact is changed to a contact by linear contact lay,
It is effectively reduced abrasion, thus extending the service life of parts；In addition valve top surface active length, Neng Goushi are also increased
Cam profile for different schemes.
Brief description
Fig. 1 is the schematic diagram with the fit structure of rocking arm for the valve stem of embodiment 1.
Fig. 2 is the mplifying structure schematic diagram with rocking arm work surface for the valve rod end top surface of embodiment 1.
Specific embodiment
Below with reference to specific embodiment, the fit structure of valve stem described in the utility model and rocking arm is done further
Elaboration, to help those skilled in the art that utility model of the present utility model is conceived, technical scheme have more complete, accurately
With deep understanding.
Embodiment 1
As shown in figure 1, the valve stem of the present embodiment includes valve stem 10 and rocking arm 20 with the fit structure of rocking arm.Described gas
Door rod 10 includes the elongated body of rod 12, and the top of the described body of rod 12 is set with valve spring 13, the lower end of described valve spring 13
By annular boss spacing 15, the upper end of described valve spring 13 is by spring base spacing 14.The bottom of the described body of rod 12 is provided with gas
Gate seat 16.As shown in Fig. 2 the work surface 21 of described rocking arm 20 is arc surface, the top work surface 11 of described valve stem 10 is ball
Face, described arc surface is formed with described sphere and puts the structure 30 that is engaged.The fit structure of the present embodiment increases having of valve
Effect rotation, thus improve valve and the working condition of valve seating sealing surface；And valve rod end top surface and rocking arm work surface
Contact area is little, thus reducing contact resistance, and alleviates abrasion.Additionally, the fit structure of the present embodiment increases valve top
Face active length, can preferably adapt to the cam profile of different schemes.
For the ordinary skill in the art, specific embodiment has simply carried out exemplary retouching to this utility model
State it is clear that this utility model implements is not subject to the restrictions described above, as long as employing method design of the present utility model
The improvement of the various unsubstantialities carrying out with technical scheme, or not improved will of the present utility model design and technical scheme direct
It is applied to other occasions, all within protection domain of the present utility model.
Claims (3)
1. the fit structure of a kind of valve stem and rocking arm, including valve stem and rocking arm；It is characterized in that：The work surface of described rocking arm
For arc surface, the top work surface of described valve stem is sphere, and described arc surface is formed with described sphere and puts the structure that is engaged.
2. valve stem according to claim 1 and rocking arm fit structure it is characterised in that：Described valve stem includes elongated
The body of rod, the top of the described body of rod is set with valve spring, and the lower end of described valve spring is spacing by annular boss, described valve
The upper end of spring is spacing by spring base.
3. valve stem according to claim 2 and rocking arm fit structure it is characterised in that：The bottom setting of the described body of rod
There is valve seating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620741814.5U CN205936725U (en) | 2016-07-14 | 2016-07-14 | Cooperation structure of valve stem and rocking arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620741814.5U CN205936725U (en) | 2016-07-14 | 2016-07-14 | Cooperation structure of valve stem and rocking arm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205936725U true CN205936725U (en) | 2017-02-08 |
Family
ID=57928908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620741814.5U Active CN205936725U (en) | 2016-07-14 | 2016-07-14 | Cooperation structure of valve stem and rocking arm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205936725U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329134A (en) * | 2014-11-09 | 2015-02-04 | 重庆鼎工机电有限公司 | Gas distribution mechanism of general engine |
-
2016
- 2016-07-14 CN CN201620741814.5U patent/CN205936725U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104329134A (en) * | 2014-11-09 | 2015-02-04 | 重庆鼎工机电有限公司 | Gas distribution mechanism of general engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |