CN204186439U - A kind of camshaft of built-in decompressor - Google Patents
A kind of camshaft of built-in decompressor Download PDFInfo
- Publication number
- CN204186439U CN204186439U CN201420645371.0U CN201420645371U CN204186439U CN 204186439 U CN204186439 U CN 204186439U CN 201420645371 U CN201420645371 U CN 201420645371U CN 204186439 U CN204186439 U CN 204186439U
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- China
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- camshaft
- decompression
- decompressor
- built
- pin
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Abstract
The utility model relates to a kind of camshaft of built-in decompressor, comprise a camshaft body, one is placed through the intrinsic decompression lever of camshaft, two are arranged on the bearing on camshaft body, decompression lever comprises rearward end from left to right successively, rod body part, front end, camshaft body has one along the recessed groove of the radial direction of camshaft body in corresponding decompression lever front end, an accommodating elastic component in this groove, and one can the decompression pin of reciprocally movement under the promotion of elastic component, the cross section of the front end of decompression lever is O type, the sheathed end being fixed on decompression pin, one end of elastic component, the other end is connected on the outer circumferential face of the front end of decompression lever, the beneficial effects of the utility model are: by decompressor built-in on camshaft, solve decompressor in prior art collide at motorcycle and easily cause dislocation, easily there is the problem of corrosive wear in Long-Time Service, substantially increase working life and the durability of decompressor.
Description
Technical field
The utility model relates to a kind of camshaft, refers to a kind of camshaft of built-in decompressor especially.
Background technique
Camshaft is one of vital part of motor, and the hardness of position, camshaft peach tip and Chilled depth are the key technical index determining camshaft working life and engine efficiency.Under ensureing that cam has the prerequisite of sufficiently high hardness and quite dark white layer, also should consider that higher carbide does not appear in axle journal, makes it have good machinability.In addition, the effect of camshaft is the opening and closing controlling valve, and how valve operates, and is directly connected to power and the operating characteristics of motive.Just based on this, cam shaft design is being the most key step of engine design.Camshaft controls the vitals of intake and exhaust, usually has two or a camshaft is arranged in motor, because the requirement of the motion synchronicity of camshaft is very high, directly has influence on the performance of motor.
Existing camshaft existence is difficult to assembling, and cam inner body loosening grade easily occurs and causes the problem that motorcycle cannot normally start under motorcycle generation special status.
Summary of the invention
The technical problem that the utility model solves is: utilize the hollow structure of camshaft to design a kind of camshaft of built-in decompressor, and be difficult to assembling to solve existing camshaft, inner body easily loosens, the problem that easily friction is impaired.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of camshaft of built-in decompressor, comprise a camshaft body, one is placed through the intrinsic decompression lever of camshaft, two are arranged on the bearing on camshaft body, decompression lever comprises rearward end from left to right successively, rod body part, front end, camshaft body has one along the recessed groove of the radial direction of camshaft body in corresponding decompression lever front end, an accommodating elastic component in this groove, and one can the decompression pin of reciprocally movement under the promotion of elastic component, the cross section of the front end of decompression lever is O type, the sheathed end being fixed on decompression pin, one end of elastic component, the other end is connected on the outer circumferential face of the front end of decompression lever.
Described elastic component is a spring, and spring housing is located on decompression pin, and after spring is sheathed, its underpart slightly protrudes from decompression pin lower end.
Decompression pin in nut shape, and has a pin head part, and spring one end is connected to pin head part, and the other end is connected to the outer circumferential face of decompression lever front end.
The camshaft of described built-in decompressor also has the outer dust cover of a bearing exterior edge face disposed therein, and the interior dust cover that is arranged at another bearing interior edge face, and is arranged with a flange plate at the rearward end place of corresponding decompression lever.
The beneficial effects of the utility model are: by decompressor built-in on camshaft, solve decompressor in prior art collide at motorcycle and easily cause dislocation, Long-Time Service that the problem of corrosive wear easily occurs, substantially increase working life and the durability of decompressor.
Accompanying drawing explanation
Fig. 1 is the utility model camshaft sectional view.
Fig. 2 is the utility model decompression lever structural representation.
Fig. 3 is the utility model decompression pin structure sectional drawing.
Fig. 4 is the right elevation structural representation of the utility model decompression lever.
Embodiment
Consult Fig. 1,2, the camshaft of built-in decompressor described in the utility model, comprise a camshaft body 1, be built in the decompressor of camshaft body, two are arranged on the bearing 3 on camshaft body 1, the outer dust cover 41 of one bearing 3 exterior edge face disposed therein, and the interior dust cover 42 that is arranged at another bearing 3 interior edge face.Camshaft body 1 comprises an intake cam and an exhaust cam, and described camshaft body 1 is arranging a through hole 11 along its axial direction is through.Described decompressor comprises a decompression lever 7 be set in described through hole 11.As shown in Figure 3, decompression lever 7 comprises rearward end 71, rod body part 72, front end 73 from left to right successively, and be arranged with a flange plate 8 at rearward end 71 place of corresponding decompression lever 7, the rearward end 71 of decompression lever 7 is placed in flange plate 8.Camshaft body 1 has a perforation 12 arranged along the radial direction of camshaft body 1 at corresponding decompression lever 7 front end 73 place, and described perforation 12 is connected with through hole 11.Described decompressor also comprises a decompression pin 5 be contained in this perforation 12, and one is set on decompression pin 5, and can drive the elastic component 6 that decompression pin 5 moves back and forth in perforation 12.In the present embodiment, described elastic component 6 is a spring, and after assembling completes, the underpart of spring slightly protrudes from decompression pin 5 lower end.
Consult Fig. 4, the cross section of the front end 73 of decompression lever 7 is O type, more specifically refers to that the cross section of the front end of decompression lever 7 along vertical axis direction is for oval.
Consult Fig. 3, decompression pin 5 is in nut shape, and there is a pin head part 51, diameter is less than the pin body portion 52 of pin head part 51, a pin-and-hole 53 is arranged with along decompression pin 5 axial direction by pin head part 51, spring one end is fixed in pin head part 51 sheathedly, and the other end is connected on the outer circumferential face of front end 73 of decompression lever 7.Decompression lever 7 can be driven to rotate when cam axle, cross section due to the front end 73 of decompression lever 7 is in O (ellipse) type, therefore, the change of long and short shaft size is had in the process that decompression lever 7 rotates, the spring at corresponding decompression lever 7 front end 73 place is made to present periodic compression, because spring puts aside elastic-restoring force in compression process, therefore, it is possible to drive decompression pin 5 periodically to move up and down, reach the effect of the instantaneous keying of valve.Namely, the camshaft of built-in decompressor described in the utility model has the decompression pin 5 of spring to link by decompression lever 7 and cover, structural design in conjunction with decompression lever front end O type (cross section is in " O " type) completes decompression process, and the moment realizing valve opens, closedown.Because described decompressor is built in the perforation of camshaft, therefore, it is possible to avoid because the reason generation camshaft parts such as collision get loose and cause vehicle normally to start, not only reduce the size of camshaft entirety, also substantially increase working life and the durability of decompressor.
Claims (4)
1. the camshaft of a built-in decompressor, comprise a camshaft body, one is placed through the intrinsic decompression lever of camshaft, two are arranged on the bearing on camshaft body, decompression lever comprises rearward end from left to right successively, rod body part, front end, camshaft body has one along the recessed groove of the radial direction of camshaft body in corresponding decompression lever front end, an accommodating elastic component in this groove, and one can the decompression pin of reciprocally movement under the promotion of elastic component, it is characterized in that: the cross section of the front end of decompression lever is O type, the sheathed end being fixed on decompression pin, one end of elastic component, the other end is connected on the outer circumferential face of the front end of decompression lever.
2. the camshaft of a kind of built-in decompressor according to claim 1, is characterized in that: described elastic component is a spring, and spring housing is located on decompression pin, and after spring is sheathed, its underpart slightly protrudes from decompression pin lower end.
3. the camshaft of a kind of built-in decompressor according to claim 2, is characterized in that: described decompression pin in nut shape, and has a pin head part, and spring one end is connected to pin head part, and the other end is connected to the outer circumferential face of decompression lever front end.
4. the camshaft of a kind of built-in decompressor according to claim 3, it is characterized in that: the camshaft of described built-in decompressor also has the outer dust cover of a bearing exterior edge face disposed therein, and the interior dust cover that is arranged at another bearing interior edge face, and be arranged with a flange plate at the rearward end place of corresponding decompression lever.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420645371.0U CN204186439U (en) | 2014-10-28 | 2014-10-28 | A kind of camshaft of built-in decompressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420645371.0U CN204186439U (en) | 2014-10-28 | 2014-10-28 | A kind of camshaft of built-in decompressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204186439U true CN204186439U (en) | 2015-03-04 |
Family
ID=52618449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420645371.0U Expired - Fee Related CN204186439U (en) | 2014-10-28 | 2014-10-28 | A kind of camshaft of built-in decompressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204186439U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320517A (en) * | 2022-01-05 | 2022-04-12 | 浙江钱江摩托股份有限公司 | Pressure reducing mechanism |
-
2014
- 2014-10-28 CN CN201420645371.0U patent/CN204186439U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320517A (en) * | 2022-01-05 | 2022-04-12 | 浙江钱江摩托股份有限公司 | Pressure reducing mechanism |
| CN114320517B (en) * | 2022-01-05 | 2022-09-27 | 浙江钱江摩托股份有限公司 | Pressure reducing mechanism |
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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: 20150304 Termination date: 20151028 |
|
| EXPY | Termination of patent right or utility model |