CN202417633U - Output cam shaft of common gasoline engine - Google Patents
Output cam shaft of common gasoline engine Download PDFInfo
- Publication number
- CN202417633U CN202417633U CN2011204946601U CN201120494660U CN202417633U CN 202417633 U CN202417633 U CN 202417633U CN 2011204946601 U CN2011204946601 U CN 2011204946601U CN 201120494660 U CN201120494660 U CN 201120494660U CN 202417633 U CN202417633 U CN 202417633U
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- China
- Prior art keywords
- cam
- driven gear
- correct time
- shaft part
- axle
- 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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- Valve Device For Special Equipments (AREA)
- One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The utility model relates to an output cam shaft of a common gasoline engine, wherein a shaft as well as a timing driven gear, an air inlet cam and an air exhaust cam that are arranged on the shaft are in an integrated structure, the timing driven gear is positioned at the middle segment of the shaft, one end of the timing driven gear is a cam shaft segment which is provided with the air inlet cam and the air exhaust cam, the air exhaust cam is positioned between the timing driven gear and the air inlet cam, the shaft end of the cam shaft segment is provided with a first bearing position, the other end of the timing driven gear is an output shaft segment, the shaft end of the output shaft segment is provided with a peripheral positioning structure, a second bearing position is arranged on a shaft segment between the peripheral positioning structure and the timing driven gear, a pressure reducing valve is arranged on a shaft segment between the air exhaust cam and the timing driven gear, a centrifugal arm is arranged on the timing driven gear, and a poking crutch of the pressure reducing valve is inserted into a poking fork of the centrifugal arm. The output cam shaft not only has the output shaft segment but also has the cam shaft segment, so that the power of an engine can be output from the output shaft segment, and an air valve can be driven to move by the cam shaft segment, thereby lowering the manufacturing cost and reducing the rotating speed.
Description
Technical field
The utility model relates to a kind of pto of general gasoline engines, particularly a kind of output cam axle of general gasoline engines.
Background technique
The pto of existing general gasoline engines is directly to adopt bent axle; An end that is bent axle stretches out the output shaft of the casing of general gasoline engines as outputting power outward; And the distribution cam axle of general gasoline engines is just at the device of engine interior as the driving valve motion; Do not export engine power, it normally gives camshaft through the intermediate transmission mechanism of being located between bent axle and the camshaft with the transmission of power of bent axle, realizes the distribution campaign of general gasoline engines.Cause component more thus, the fabricating cost of general gasoline engines increases; Simultaneously this type camshaft generally is that to be that timing points is corresponding with timing gear with the exhaust cam assemble; The driving of distribution cam axle need rely on the intermediate transmission mechanism transferring power; Because the installing space in the casing is limited; So this type intermediate transmission mechanism is also just less relatively, the rotating speed that causes again thus transmitting is very fast relatively, is unfavorable for reducing rotating speed.And existing camshaft is generally package assembly, on the axle correct time driven gear and the inlet and outlet cam be mount on axle, assembly process can cause cost to increase.
Summary of the invention
The purpose of the utility model is the deficiency that exists to existing technology, and a kind of output cam axle of general gasoline engines is provided.It is the overall structure that existing output shaft part has the cam shaft part again, can the power of motor be exported from the output shaft part, and drive valve motion through the cam shaft part simultaneously.Fabricating cost can be reduced, rotating speed can be reduced again.
The purpose of the utility model is achieved in that and comprises and be provided with driven gear and the axle of inlet and outlet cam in correct time; The overall structure that driven gear in correct time, intake cam, exhaust cam on said axle and the axle is formed in one; Correct time, driven gear was positioned at the stage casing of axle, and the axially extended shaft part of driven gear one end in correct time is the cam shaft part, and the cam shaft part is provided with the inlet and outlet cam; Exhaust cam is between correct time driven gear and intake cam; The axle head of cam shaft part is provided with the clutch shaft bearing position, and the axially extended shaft part of the driven gear the other end in correct time is provided with circumferential position structure for output shaft part, the axle head of output shaft part; Shaft part between this circumferential position structure and the correct time driven gear is provided with the second bearing position; On the shaft part between said exhaust cam and the correct time driven gear reduction valve is installed, be equipped with centrifuge arm on the driven gear correct time, and dialling of reduction valve turned in the shift fork that inserts centrifuge arm.
The timing points of the timing points of said intake cam driven gear in corresponding correct time.
Shaft part between said exhaust cam and the correct time driven gear is provided with the tangent plane; Said reduction valve is rotatably connected to tangent plane and adjacent with exhaust cam through bearing pin; The limited part of reduction valve exceeds exhaust cam basic circle 1.35～1.65mm, and dialling of reduction valve turned in the shift fork that inserts centrifuge arm.
Said centrifuge arm is a crotch-shaped; The fixed end of centrifuge arm is positioned at the eccentric position of driven gear in correct time, is rotatably mounted to the axial end face of driven gear in correct time through rivet, and the free end of centrifuge arm is along counterclockwise walking around the cam shaft part; Shift fork is located at free end; Shift fork extends axially along the cam shaft part, a return spring one end through fixing pin with correct time driven gear be fixedly connected, the other end is connected with the free end of centrifuge arm.
The circumferential position structure of the axle head setting of output shaft part is keyway or spline.
Adopt such scheme, make to the utlity model has following advantage:
The overall structure that the output cam axle is formed in one; Correct time, driven gear was positioned at the stage casing of axle; The axially extended shaft part of driven gear one end in correct time is the cam shaft part, and the cam shaft part is provided with the inlet and outlet cam, and exhaust cam is between correct time driven gear and intake cam; The axle head of cam shaft part is provided with the clutch shaft bearing position; The axially extended shaft part of the driven gear the other end in correct time is provided with circumferential position structure for output shaft part, the axle head of output shaft part, and the shaft part between this circumferential position structure and the correct time driven gear is provided with the second bearing position.Can the output cam axle be supported in the petrol engine casing through the clutch shaft bearing position and the second bearing position like this; On the axle correct time driven gear and bent axle on gear engagement; Make the power of bent axle be directly passed to the output cam axle; Through the outside outputting power of output shaft part, pass through the motion of cam shaft part drive controlling inlet and outlet door simultaneously.Adopt the output cam axle of this structure, between bent axle and camshaft, no longer rely on intermediate transmission mechanism to change transmission direction,, both can reduce cost, can also reduce by 1/2 rotating speed like chain wheel driving mechanism or middle drive wheel transferring power.
The overall structure that the axle of output cam axle and driven gear in correct time, intake cam, exhaust cam on the axle are formed in one can adopt casting to carry out machining again, also can reduce fabricating cost.
The timing points of the timing points of the intake cam on output cam axle driven gear in corresponding correct time.Make the sense of rotation of sense of rotation and common distribution cam axle of output cam axle opposite like this, the lift of the profile line of the inlet and outlet cam on the output cam axle and backhaul be in the opposite direction with common distribution cam axle also, reaches the deceleration purpose thus.
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is that the A-A of Fig. 1 is to sectional drawing.
In the accompanying drawing, 1 is the clutch shaft bearing position, and 2 is intake cam, and 3 is exhaust cam, and 4 is centrifuge arm; 4a is a shift fork, and 4b is hook, and 5 is the driven gear in correct time, and 6 is the second bearing position, and 7 are the output shaft part; 8 is reduction valve, and 8a is a limited part, and 8b turns for dialling, and 9 is rivet, and 10 is fixing pin; 11 is return spring, and 12 is bearing pin, and 13 is the cam shaft part, and 14 is the tangent plane.
Embodiment
Referring to Fig. 1, Fig. 2; A kind of output cam axle of general gasoline engines; Comprise being provided with driven gear and the axle of inlet and outlet cam in correct time that the overall structure that the driven gear 5 in correct time on said axle and the axle, intake cam 2, exhaust cam 3 are formed in one is carried out machining after adopting casting again.Correct time, driven gear 5 was positioned at the stage casing of axle; The axially extended shaft part of driven gear 5 one ends in correct time is a cam shaft part 13; Cam shaft part 13 is provided with the inlet and outlet cam; Exhaust cam 3 is between correct time driven gear 5 and intake cam 2; The axle head of cam shaft part 13 is provided with clutch shaft bearing position 1, the timing points of the timing points of said intake cam 2 driven gear in corresponding correct time 5; The axially extended shaft part of driven gear 5 the other ends in correct time is output shaft part 7; The axle head of output shaft part 7 is provided with circumferential position structure; Shaft part between this circumferential position structure and the correct time driven gear 5 is provided with the second bearing position 6; The circumferential position structure of the axle head setting of said output shaft part 7 is keyway or spline, and present embodiment adopts keyway.On the shaft part between said exhaust cam 3 and the correct time driven gear 5 reduction valve 8 is installed, be equipped with centrifuge arm 4 on the driven gear 5 correct time, and the dialling of reduction valve 8 turned 8b and inserted among the shift fork 4a of centrifuge arm 4.Shaft part between said exhaust cam 3 and the correct time driven gear 5 is provided with tangent plane 14; Said reduction valve 8 is rotatably connected to tangent plane 14 and adjacent with exhaust cam 3 through bearing pin 12; The limited part 8a of reduction valve 8 exceeds exhaust cam 3 basic circles 1.35～1.65mm, and the dialling of reduction valve 8 turned 8b and to insert among the shift fork 4a of centrifuge arm 4.Said centrifuge arm 4 is a crotch-shaped; The fixed end of centrifuge arm 4 is positioned at driven gear 5 eccentric position in correct time, is rotatably mounted to driven gear 5 axial ends in correct time through rivet 9, and the free end of centrifuge arm 4 is along counterclockwise walking around the cam shaft part; Shift fork 4a is located at free end; Shift fork 4a extends axially along the cam shaft part, a return spring 11 1 ends through fixing pin 10 with correct time driven gear 5 be fixedly connected, the other end is connected with the free end of centrifuge arm 4; Present embodiment is provided with a hook 4b at the free end of centrifuge arm near the position of fixed end rivet 9, return spring 11 and the end hang over hook 4b and go up fixing.
This output cam axle is installed in the casing of general gasoline engines parallel with bent axle; Be supported in casing through the clutch shaft bearing position and the second bearing position on the output cam axle; On the output cam axle correct time driven gear and bent axle on driving gear engagement transferring power; Output shaft part on the output cam axle is overhanging to go out casing, is used for outputting power.Inlet and outlet cam on the output cam axle is used for the motion of drive controlling inlet and outlet door.Fabricating cost can be reduced, rotating speed can be reduced again.
Claims (5)
1. the output cam axle of a general gasoline engines; Comprise being provided with driven gear and the axle of inlet and outlet cam in correct time, it is characterized in that: the overall structure that driven gear in correct time, intake cam, the exhaust cam on said axle and the axle is formed in one, correct time, driven gear was positioned at the stage casing of axle; The axially extended shaft part of driven gear one end in correct time is the cam shaft part; The cam shaft part is provided with the inlet and outlet cam, and exhaust cam is between correct time driven gear and intake cam, and the axle head of cam shaft part is provided with the clutch shaft bearing position; The axially extended shaft part of the driven gear the other end in correct time is the output shaft part; The axle head of output shaft part is provided with circumferential position structure, and the shaft part between this circumferential position structure and the correct time driven gear is provided with the second bearing position, on the shaft part between said exhaust cam and the correct time driven gear reduction valve is installed; Be equipped with centrifuge arm on the driven gear correct time, and dialling of reduction valve turned in the shift fork that inserts centrifuge arm.
2. the output cam axle of general gasoline engines according to claim 1 is characterized in that: the timing points of the timing points of said intake cam driven gear in corresponding correct time.
3. the output cam axle of general gasoline engines according to claim 1; It is characterized in that: the shaft part between said exhaust cam and the correct time driven gear is provided with the tangent plane; Said reduction valve is rotatably connected to tangent plane and adjacent with exhaust cam through bearing pin; The limited part of reduction valve exceeds exhaust cam basic circle 1.35～1.65mm, and dialling of reduction valve turned in the shift fork that inserts centrifuge arm.
4. the output cam axle of general gasoline engines according to claim 1; It is characterized in that: said centrifuge arm is a crotch-shaped; The fixed end of centrifuge arm is positioned at the eccentric position of driven gear in correct time, is rotatably mounted to the axial end face of driven gear in correct time through rivet, and the free end of centrifuge arm is along counterclockwise walking around the cam shaft part; Shift fork is located at free end; Shift fork extends axially along the cam shaft part, a return spring one end through fixing pin with correct time driven gear be fixedly connected, the other end is connected with the free end of centrifuge arm.
5. the output cam axle of general gasoline engines according to claim 1 is characterized in that: the circumferential position structure of the axle head setting of output shaft part is keyway or spline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204946601U CN202417633U (en) | 2011-12-02 | 2011-12-02 | Output cam shaft of common gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204946601U CN202417633U (en) | 2011-12-02 | 2011-12-02 | Output cam shaft of common gasoline engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202417633U true CN202417633U (en) | 2012-09-05 |
Family
ID=46742406
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204946601U Expired - Lifetime CN202417633U (en) | 2011-12-02 | 2011-12-02 | Output cam shaft of common gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202417633U (en) |
-
2011
- 2011-12-02 CN CN2011204946601U patent/CN202417633U/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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |