CN201347808Y - Engine - Google Patents
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- Publication number
- CN201347808Y CN201347808Y CNU2009201260142U CN200920126014U CN201347808Y CN 201347808 Y CN201347808 Y CN 201347808Y CN U2009201260142 U CNU2009201260142 U CN U2009201260142U CN 200920126014 U CN200920126014 U CN 200920126014U CN 201347808 Y CN201347808 Y CN 201347808Y
- Authority
- CN
- China
- Prior art keywords
- camshaft
- bearing
- cylinder head
- positioning device
- annular groove
- 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 - Lifetime
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The utility model provides an engine, which comprises a cylinder end (1) and a camshaft (2), wherein a step (3) for positioning the camshaft (2) is arranged on one side of a cylinder end die cavity; and the camshaft (2) is provided with a bearing (4). The engine is characterized in that the cylinder end (1) is additionally provided with a positioning device for preventing the camshaft (2) from axially moving. The utility model can ensure that the camshaft can be positioned accurately and cannot be offset after being arranged on the cylinder end after the camshaft is axially positioned through the positioning device, so as to ensure that a driven chain wheel arranged on the camshaft and a driving chain wheel arranged on a crankshaft are accurately positioned on the same straight line.
Description
Technical field
The utility model relates to a kind of motor.
Background technique
At present, what adopted the location of motorcycle engine overhead camshaft is that cylinder head die cavity one side machine adds the directly mode of location of a step.This structure can only position a side of camshaft when assembling, can't judge whether the camshaft opposite side satisfies matching requirements, the driven sprocket and the drive sprocket on the bent axle that can not accurately guarantee camshaft after its final assembly is finished are on same the straight line, can not well assemble control to component simultaneously.
The model utility content
The purpose of this utility model is to provide a kind of can carry out accurate positioning means for positioning to engine cam.
The purpose of this utility model is achieved in that a kind of motor, comprise cylinder head and camshaft, one side of cylinder head die cavity is provided with the step of the above-mentioned camshaft in location, have bearing on the above-mentioned camshaft, it is characterized in that: also have additional on the above-mentioned cylinder head and prevent the axially movable positioning device of above-mentioned camshaft.
For easy to process, above-mentioned positioning device is arranged on above-mentioned cylinder head and supports above-mentioned bearing place.
For easy to process, the C shape ring that above-mentioned positioning device comprises the C annular groove and cooperates with above-mentioned C annular groove; In order to reach locating effect, the interior ring radius of above-mentioned C shape ring is slightly less than the cam shaft pore radius.
In order to make the camshaft good positioning effect, above-mentioned C annular groove is arranged on the face near the above-mentioned bearing of supporting of above-mentioned step; Above-mentioned C shape ring and above-mentioned step block the bearing near above-mentioned step jointly.
The utility model motor is when assembling, and after in the C shape ring embedding C annular groove, the camshaft that will assemble bearing again is placed in the cylinder head die cavity routinely.The utility model fixes the position of the bearing of camshaft one end by step and C shape ring, thereby can accurately locate camshaft, prevents that it from moving axially.
The beneficial effects of the utility model are:
1, the utility model by positioning device to the camshaft axially locating after, can guarantee that camshaft is assembled to back accurate positioning on the cylinder head, axial position is not offset, thereby the drive sprocket that assembles on driven sprocket that assembles on the assurance camshaft and the bent axle can accurately be in a straight line;
2, in producing assembling in enormous quantities, the assembler can when installation according to the size between the inner bearing of the location dimension of C type ring and cylinder head and camshaft judge cylinder head and camshaft process whether defective in quality, thereby can guarantee to produce in enormous quantities the reliability of installation;
3, after the utility model is provided with positioning device, can increase substantially the working life of chain and sprocket wheel, thereby guarantee the reliability of motor;
4, positioning device of the present utility model is easy to assembly, accurate positioning, and the machining cost is low.
Description of drawings
Fig. 1 is the utility model embodiment 1 a structural representation;
Fig. 2 is the partial schematic diagram of the cylinder head among the utility model embodiment 1;
Fig. 3 is the A-A sectional view of Fig. 2;
Fig. 4 is the structural representation of the C shape ring among the utility model embodiment 1;
Fig. 5 is the plan view of Fig. 4;
Fig. 6 is common engine camshaft assembling and positioning figure;
Among the figure, 1, cylinder head; 2, camshaft; 3, step; 4, bearing; 5, the drive sprocket on the bent axle; 6, C annular groove; 7, C shape ring; 8, the face of the block bearing of close step; 9, cylinder head cover; 10, driven sprocket; 11, chain;
Embodiment
As shown in Figure 1, a kind of motor comprises cylinder head 1 and camshaft 2, and a side of cylinder head die cavity is provided with the step 3 of the described camshaft 2 in location, have bearing 4 on the described camshaft 2, it is characterized in that: also have additional on the described cylinder head 1 and prevent described camshaft 2 axially movable positioning devices; Described positioning device is arranged on described cylinder head and supports described bearing 4 places; The C shape ring 7 that described positioning device comprises C annular groove 6 and cooperates with described C annular groove 6; The interior ring radius of described C shape ring 7 is slightly less than the cam shaft pore radius; Described C annular groove 6 specifically is arranged on the face 8 near the described bearing 4 of supporting of described step 3; Described C shape ring 7 and described step 3 block the bearing 4 near described step 3 jointly.
During engine operation, the bearing 4 of step 3 and C shape ring 7 common stationary cam axle one ends, thus can accurately locate camshaft 2, prevent that it from moving axially.
The utility model includes but not limited to above embodiment, prevents the axially movable positioning device of described camshaft as long as also have additional on the cylinder head of motor, all drops in the protection domain of the present utility model.
Claims (6)
1, a kind of motor, comprise cylinder head (1) and camshaft (2), one side of cylinder head die cavity is provided with the step (3) of the described camshaft in location (2), have bearing (4) on the described camshaft (2), it is characterized in that: also have additional on the described cylinder head (1) and prevent the axially movable positioning device of described camshaft (2).
2, motor according to claim 1 is characterized in that: described positioning device is arranged on described cylinder head (1) and supports described bearing (4) and locate.
3, motor according to claim 1 and 2 is characterized in that: the C shape ring (7) that described positioning device comprises C annular groove (6) and cooperates with described C annular groove (6).
4, according to right 3 described motors, it is characterized in that: the interior ring radius of described C shape ring (7) is slightly less than the cam shaft pore radius.
5, motor according to claim 3 is characterized in that: described C annular groove (6) is arranged on the face (8) near the described bearing of supporting (4) of described step (3); Described C shape ring (7) and described step (3) block the bearing (4) near described step (3) jointly.
6, motor according to claim 4 is characterized in that: described C annular groove (6) is arranged on the face (8) near the described bearing of supporting (4) of described step (3); Described C shape ring (7) and described step (3) block the bearing (4) near described step (3) jointly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201260142U CN201347808Y (en) | 2009-01-04 | 2009-01-04 | Engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201260142U CN201347808Y (en) | 2009-01-04 | 2009-01-04 | Engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201347808Y true CN201347808Y (en) | 2009-11-18 |
Family
ID=41367278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201260142U Expired - Lifetime CN201347808Y (en) | 2009-01-04 | 2009-01-04 | Engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201347808Y (en) |
-
2009
- 2009-01-04 CN CNU2009201260142U patent/CN201347808Y/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091118 |
|
| CX01 | Expiry of patent term |