CN215369969U - Universal gasoline engine distribution phase cam shaft - Google Patents
Universal gasoline engine distribution phase cam shaft Download PDFInfo
- Publication number
- CN215369969U CN215369969U CN202121663243.5U CN202121663243U CN215369969U CN 215369969 U CN215369969 U CN 215369969U CN 202121663243 U CN202121663243 U CN 202121663243U CN 215369969 U CN215369969 U CN 215369969U
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- China
- Prior art keywords
- cam
- wall
- glass fiber
- air inlet
- intermediate shaft
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- Expired - Fee Related
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- 238000009826 distribution Methods 0.000 title claims abstract description 11
- 239000003365 glass fiber Substances 0.000 claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000001746 injection moulding Methods 0.000 abstract description 5
- 239000004677 Nylon Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 229920001778 nylon Polymers 0.000 abstract description 4
- 238000004663 powder metallurgy Methods 0.000 abstract description 4
- 239000011521 glass Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 239000005447 environmental material Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The utility model discloses a gas distribution phase camshaft of a general gasoline engine, which comprises a glass fiber gear, a connecting shaft, an intermediate shaft, an air inlet cam and an air outlet cam, wherein cam holes are formed in the outer walls of the air inlet cam and the air outlet cam, vertical involute splines are formed in the inner walls of the two cam holes, two transverse involute splines are formed in the outer wall of the intermediate shaft, the two transverse involute splines are connected with the two vertical involute splines respectively, an opening is formed in the outer wall of the bottom of the glass fiber gear, one end of the intermediate shaft is connected to the inner wall of the opening, and a centrifugal arm and a pressure reducing valve are arranged on the outer wall of one side of the glass fiber gear. According to the utility model, the air inlet cam and the air outlet cam are arranged, the air inlet cam and the air outlet cam are made of powder metallurgy materials, and the glass fiber gear is formed by nylon injection molding, so that the engine can be more wear-resistant, high-temperature resistant and fatigue-resistant, the contour line is more stable, the friction is small, and the noise of the engine is reduced.
Description
Technical Field
The utility model relates to the technical field of camshafts, in particular to a gas distribution phase camshaft of a general gasoline engine.
Background
The opening and closing times and the opening duration of the intake and exhaust valves, which are expressed by the crank angle, are called the valve timing. The camshaft is a component of a piston engine and is used for controlling the opening and closing of the valves, although in a four-stroke engine the camshaft rotates at half the speed of the crankshaft (in a two-stroke engine the camshaft rotates at the same speed as the crankshaft), but generally it is still at a high speed and is subjected to a high torque, so that the camshaft is required to be designed at a high level in terms of strength and support, and is generally made of high-quality alloy steel or alloy steel.
Because the valve motion law is related to the power and the running characteristic of an engine, the camshaft design occupies a very important position in the design process of the engine, the demand of parts of the general gasoline engine in the market is large at present, the market has large environmental material surge and the labor cost is high, and the investment on equipment is large, so that the productivity is low and the labor cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art and provides a universal gasoline engine valve timing camshaft.
In order to achieve the purpose, the utility model adopts the following technical scheme:
general gasoline engine distribution phase camshaft, including fine gear of glass, connecting axle, jackshaft, inlet cam and exhaust cam, the cam hole has all been seted up to inlet cam and exhaust cam outer wall, and two cam hole inner walls have all seted up vertical involute splines, the jackshaft outer wall is seted up two horizontal involute splines, and two horizontal involute splines and two vertical involute splines connect respectively, fine gear bottom outer wall of glass has seted up the opening, and jackshaft one end is connected on the opening inner wall, fine gear one side outer wall of glass is equipped with centrifugal arm and relief pressure valve, the relief pressure valve passes through the connecting axle and connects on jackshaft one end outer wall, relief pressure valve one end is connected on centrifugal arm.
Preferably, the outer wall of one side of the glass fiber gear is provided with a connecting seat, the inner wall of the connecting seat is rotatably connected with a middle steel wire of an L-shaped structure, and one end of the middle steel wire penetrates through the middle shaft and is connected onto the centrifugal arm.
Preferably, one end of the centrifugal arm is fixedly connected with a spring, and one end of the spring is fixedly connected to the connecting seat.
The utility model has the beneficial effects that:
1. according to the utility model, the air inlet cam and the air outlet cam are arranged, the air inlet cam and the air outlet cam are made of powder metallurgy materials, and the glass fiber gear is formed by nylon injection molding, so that the engine can be more wear-resistant, high-temperature-resistant and fatigue-resistant, the contour line is more stable, the friction is small, and the noise of the engine is reduced.
2. According to the utility model, the vertical involute splines are arranged on the inner walls of the air inlet cam and the exhaust cam, and the transverse spline and the vertical spline of the intermediate shaft are matched, so that the air inlet cam and the exhaust cam are not easy to slip or rotate under the action of large torque in the engine.
3. The centrifugal cylinder pressure stabilizing mechanism is formed by assembling the centrifugal arm, the pressure reducing valve, the intermediate steel wire and the spring, so that the mechanism ensures normal starting (hot starting and cold starting) of an engine, and has stable cylinder pressure and stable rotating speed at the same time of low cost.
Drawings
FIG. 1 is a schematic structural diagram of a general gasoline engine distribution phase camshaft in a front view according to the present invention;
FIG. 2 is a schematic side view of a universal gasoline engine valve timing camshaft according to the present invention;
FIG. 3 is a schematic diagram of a middle shaft structure of a universal gasoline engine distribution phase camshaft provided by the utility model;
FIG. 4 is a schematic view of an intake cam structure of a universal gasoline engine valve timing camshaft according to the present invention;
FIG. 5 is the exhaust cam structure diagram of the universal gasoline engine valve timing camshaft.
In the figure: 1. a glass fiber gear; 2. a connecting shaft; 3. a centrifugal arm; 4. a pressure reducing valve; 5. an intermediate shaft; 6. a middle steel wire; 7. a connecting seat; 8. a spring; 9. an intake cam; 10. an exhaust cam.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
Referring to fig. 1-5, the universal gasoline engine distribution phase camshaft comprises a glass fiber gear 1, a connecting shaft 2, an intermediate shaft 5, an air inlet cam 9 and an exhaust cam 10, wherein the glass fiber gear 1 is formed by nylon (PA66+ 30% glass), the intermediate shaft 5 is formed by No. 45 steel centerless grinding, the air inlet cam 9 and the exhaust cam 10 are formed by pressing powder metallurgy materials, the glass fiber gear 1 is injected by an injection mold (positioned by the contour lines of the air inlet cam 9 and the exhaust cam 10) after the air inlet cam 9 and the exhaust cam 10 are pressed, two notches are respectively milled on the intermediate shaft 5 during injection molding to prevent the glass fiber gear 1 from slipping after injection molding, cam holes are respectively formed on the outer walls of the air inlet cam 9 and the exhaust cam 10, vertical involute splines are respectively formed on the inner walls of the two cam holes, two transverse involute splines are formed on the outer wall of the intermediate shaft 5, and the two transverse involute splines are respectively connected with the two vertical involute splines, the opening has been seted up to 1 bottom outer wall of fine gear of glass, and 5 one ends of jackshaft are connected on the opening inner wall, 1 one side outer wall of fine gear of glass is equipped with centrifugal arm 3 and relief pressure valve 4, relief pressure valve 4 passes through connecting axle 2 and connects on 5 one end outer walls of jackshaft, 4 one ends of relief pressure valve are connected on centrifugal arm 3, 1 one side outer wall of fine gear of glass is equipped with connecting seat 7, and 7 inner walls of connecting seat rotate the middle steel wire 6 that is connected with L type structure, 6 one ends of middle steel wire run through in jackshaft 5 and connect on centrifugal arm 3, 3 one end fixedly connected with springs 8 of centrifugal arm, and 8 one end fixed connection of springs are on connecting seat 7.
The working principle is as follows: when the engine is used, the air inlet cam 9 and the exhaust cam 10 are arranged, the air inlet cam 9 and the exhaust cam 10 are made of powder metallurgy materials, the glass fiber gear 1 is formed by nylon injection molding, so that the engine can be more wear-resistant, high-temperature resistant and fatigue-resistant, the contour line is more stable, the friction is small, the noise of the engine is reduced, the vertical involute spline is arranged on the inner wall of the air inlet cam 9 and the inner wall of the exhaust cam 10, the transverse spline and the vertical spline of the intermediate shaft 5 are matched, the air inlet cam 9 and the exhaust cam 10 are enabled not to slip or rotate easily under the action of large torque in the engine, and then the centrifugal arm 3, the pressure reducing valve 4, the intermediate steel wire 6 and the spring 8 are assembled to form the engine, so that the engine is enabled to be started normally (hot starting and cold starting) at low cost, the cylinder pressure is stable, and the rotating speed is stable, thereby reducing the labor cost and more effectively improving the production quality.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (3)
1. The distribution phase camshaft of the general gasoline engine comprises a glass fiber gear (1), a connecting shaft (2), an intermediate shaft (5), an air inlet cam (9) and an exhaust cam (10), and is characterized in that cam holes are formed in the outer walls of the air inlet cam (9) and the exhaust cam (10), vertical involute splines are formed in the inner walls of the two cam holes, two transverse involute splines are formed in the outer wall of the intermediate shaft (5) and are respectively connected with the two vertical involute splines, an opening is formed in the outer wall of the bottom of the glass fiber gear (1), one end of the intermediate shaft (5) is connected to the inner wall of the opening, a centrifugal arm (3) and a pressure reducing valve (4) are arranged on the outer wall of one side of the glass fiber gear (1), and the pressure reducing valve (4) is connected to the outer wall of one end of the intermediate shaft (5) through the connecting shaft (2), one end of the pressure reducing valve (4) is connected to the centrifugal arm (3).
2. The distribution camshaft of the general gasoline engine according to claim 1, wherein the glass fiber gear (1) is provided with a connecting seat (7) on one side of the outer wall, the inner wall of the connecting seat (7) is rotatably connected with an intermediate steel wire (6) with an L-shaped structure, and one end of the intermediate steel wire (6) penetrates through the intermediate shaft (5) and is connected with the centrifugal arm (3).
3. The universal gasoline engine distribution camshaft according to claim 2, wherein one end of the centrifugal arm (3) is fixedly connected with a spring (8), and one end of the spring (8) is fixedly connected with the connecting seat (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121663243.5U CN215369969U (en) | 2021-07-21 | 2021-07-21 | Universal gasoline engine distribution phase cam shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121663243.5U CN215369969U (en) | 2021-07-21 | 2021-07-21 | Universal gasoline engine distribution phase cam shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215369969U true CN215369969U (en) | 2021-12-31 |
Family
ID=79610689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121663243.5U Expired - Fee Related CN215369969U (en) | 2021-07-21 | 2021-07-21 | Universal gasoline engine distribution phase cam shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215369969U (en) |
-
2021
- 2021-07-21 CN CN202121663243.5U patent/CN215369969U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |