CN203214114U - Air valve top cylinder for motorcycle engine - Google Patents
Air valve top cylinder for motorcycle engine Download PDFInfo
- Publication number
- CN203214114U CN203214114U CN 201220719659 CN201220719659U CN203214114U CN 203214114 U CN203214114 U CN 203214114U CN 201220719659 CN201220719659 CN 201220719659 CN 201220719659 U CN201220719659 U CN 201220719659U CN 203214114 U CN203214114 U CN 203214114U
- Authority
- CN
- China
- Prior art keywords
- tube
- motorcycle engine
- boss
- top cylinder
- cylinder
- 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
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- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The utility model discloses an air valve top cylinder for a motorcycle engine and the top cylinder comprises a cylinder base (3) and a cylinder wall (1). One side of the cylinder base (3) facing the cylinder wall (1) is integrally provided with a boss (2); and the center of the boss (2) overlaps with the center of the top cylinder. By an optimal design to the structure and dimension of the top cylinder, the air valve top cylinder for a motorcycle engine causes lower noises when the top cylinder contacts with a cam.
Description
Technical field
The utility model relates to a kind of valve top tube for motorcycle engine.
Background technique
In the intake and exhaust mechanism of motorcycle engine, valve stem places in the tube of valve top, by cam rotation jack-up valve top tube, thereby drives the valve stem motion, finishes air inlet or the exhaust action of firing chamber.But in the prior art, valve top tube is a simple tube structure, though this structure can be finished aforementioned activities, in top tin and process that cam contacts, can produce bigger noise.
Therefore those skilled in the art are devoted to develop the low valve top barrel structure of a kind of noise.
The model utility content
Because the above-mentioned defective of prior art, technical problem to be solved in the utility model provides the low valve top barrel structure of a kind of noise.
For achieving the above object, the utility model provides a kind of motorcycle engine with valve top tube, at the bottom of comprising tin and barrel; Described tube bottom surface has been wholely set boss to described barrel one side; The center of described boss overlaps with the center of top tube.
Preferable, the diameter of described boss is 5-7mm; The bottom surface distance that the described tube of the tip to face distance of described boss deviates from described barrel the end is 2 or 2.2-2.6mm.
Preferable, described diameter is 6mm; Described distance is 2mm.
Preferable, the height of top tube is 19-21mm; The internal diameter of top tube is 24.3-24.8mm, and external diameter is 25.8-26.1mm.
Preferable, the height of top tube is 20mm; The internal diameter of top tube is 24.4mm, and external diameter is 26mm.
The beneficial effects of the utility model are: the utility model is optimized design by structure and the size to the top tube, when the top tube is contacted with cam, produces lower noise.
Description of drawings
Fig. 1 is the structural representation of the utility model one embodiment.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As shown in Figure 1, a kind of motorcycle engine is with valve top tube, and at the bottom of comprising tin 3 and barrel 1, a tube end 3 has been wholely set boss 2 towards barrel 1 one sides; The center of boss 2 overlaps with the center of top tube.
The diameter phi 3 of boss 2 is 6mm; The end face 2a of boss 23 bottom surface 3a distance H 2 that deviate from barrel 1 at the bottom of the tube are 2mm.
The height H 1 of top tube is 20mm; The internal diameter φ 1 of top tube is 24.4mm, and external diameter φ 2 is 26mm.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art need not creative work and just can make many modifications and variations according to design of the present utility model.Therefore, all technician in the art comply with design of the present utility model on the basis of existing technology by the available technological scheme of logical analysis, reasoning, or a limited experiment, all should be in the determined protection domain by claims.
Claims (5)
1. a motorcycle engine is with valve top tube, (3) and a barrel (1) at the bottom of comprising tin; It is characterized in that: the described tube end (3) has been wholely set boss (2) towards described barrel (1) one side; The center of described boss (2) overlaps with the center of top tube.
2. motorcycle engine as claimed in claim 1 is pushed up tube with valve, and it is characterized in that: the diameter of described boss (2) (φ 3) is 5-7mm; Bottom surface (3a) distance (H2) that the end face (2a) of described boss (2) deviates from described barrel (1) apart from the described tube end (3) is 2 or 2.2-2.6mm.
3. motorcycle engine as claimed in claim 2 is pushed up tube with valve, and it is characterized in that: described diameter (φ 3) is 6mm; Described distance (H2) is 2mm.
4. push up tube as claim 1 or 2 or 3 described motorcycle engines with valve, it is characterized in that: the height (H1) of top tube is 19-21mm; The internal diameter (φ 1) of top tube is 24.3-24.8mm, and external diameter (φ 2) is 25.8-26.1mm.
5. motorcycle engine as claimed in claim 4 is pushed up tube with valve, it is characterized in that: the height (H1) of top tube is 20mm; The internal diameter (φ 1) of top tube is 24.4mm, and external diameter (φ 2) is 26mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220719659 CN203214114U (en) | 2012-12-24 | 2012-12-24 | Air valve top cylinder for motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220719659 CN203214114U (en) | 2012-12-24 | 2012-12-24 | Air valve top cylinder for motorcycle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203214114U true CN203214114U (en) | 2013-09-25 |
Family
ID=49203660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220719659 Expired - Fee Related CN203214114U (en) | 2012-12-24 | 2012-12-24 | Air valve top cylinder for motorcycle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203214114U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587358A (en) * | 2016-02-23 | 2016-05-18 | 山西微风无人系统科技有限公司 | Overhead camshaft four-stroke electronic injection unmanned helicopter engine |
-
2012
- 2012-12-24 CN CN 201220719659 patent/CN203214114U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587358A (en) * | 2016-02-23 | 2016-05-18 | 山西微风无人系统科技有限公司 | Overhead camshaft four-stroke electronic injection unmanned helicopter engine |
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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: 20130925 Termination date: 20191224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |