CN210460865U - Transmission system, micro engine and model car - Google Patents
Transmission system, micro engine and model car Download PDFInfo
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- CN210460865U CN210460865U CN201921432479.0U CN201921432479U CN210460865U CN 210460865 U CN210460865 U CN 210460865U CN 201921432479 U CN201921432479 U CN 201921432479U CN 210460865 U CN210460865 U CN 210460865U
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Abstract
The utility model discloses a transmission system of a micro engine, the micro engine and a model car, wherein the transmission system comprises a first transmission wheel which is in transmission connection with an output shaft of a motor; the second transmission wheel is connected with the first transmission wheel through a crankshaft, and the axis of the crankshaft is connected with a piston rod of an engine cylinder; the third driving wheel is in transmission connection with the second driving wheel; and the camshaft is arranged in the center of the third driving wheel in a penetrating manner and is used for driving a valve transmission assembly of the engine to move up and down. The utility model discloses simple structure and compactness.
Description
Technical Field
The utility model relates to a model car field, concretely relates to transmission system, micro-engine and model car.
Background
The model automobile refers to an automobile model for reducing a real automobile according to a specific proportion, is a miniature of the real automobile, and also comprises parts such as an inner decoration, a chassis, an engine, a wheel frame and an automobile mark.
The model car which is completely reduced and repeatedly carved according to the real car has a complex structure and very high manufacturing cost, particularly the engine is the essence in the whole car, the structure of the model car is simplified while the performance of the engine is kept, and the manufacturing difficulty is reduced, so that the model car is a key technology in the field of the existing model cars.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a micro engine's transmission system, aim at solving among the prior art micro engine's transmission system structure complicated, the big problem of the manufacturing degree of difficulty.
In order to achieve the above object, the present invention provides a transmission system of a micro engine, which includes:
the first driving wheel is in transmission connection with an output shaft of the motor;
the second transmission wheel is connected with the first transmission wheel through a crankshaft, and the axis of the crankshaft is connected with a piston rod of an engine cylinder;
the third driving wheel is in transmission connection with the second driving wheel;
the cam shaft penetrates through the center of the third driving wheel and is used for driving a valve driving component of the engine to move up and down;
the first transmission wheel and the second transmission wheel are respectively positioned at two opposite sides of a crankcase of the engine, and the second transmission wheel and the third transmission wheel are positioned at the same side of the crankcase of the engine.
Preferably, the first transmission wheel is in transmission connection with the output shaft of the motor through a first belt, and the second transmission wheel is in transmission connection with the third transmission wheel through a second belt.
Preferably, the device further comprises an impeller and a pinch roller which are positioned on the same side with the second transmission wheel and the third transmission wheel, the pinch roller, the second transmission wheel and the third transmission wheel are connected in a center line to form a triangular space, the impeller is positioned in the triangular space, the second transmission wheel, the pinch roller and the third transmission wheel are sequentially surrounded by the second belt, and the outer side of the second belt is pressed on a rotating shaft of the impeller; the impeller is provided with blades.
Preferably, the pinch roller is disposed on a cylinder of the engine through a pinch roller shaft, and the impeller is disposed on a radiator between the cylinder and the crankcase through an impeller shaft.
Preferably, the valve transmission assembly comprises a rocker arm driven by the camshaft to rotate along the fixed shaft, a tappet body driven by the free end of the rocker arm to move up and down, and a valve connected with the tappet body, wherein the lower end of the valve is positioned in the engine cylinder.
The utility model also provides a micro engine, which comprises an air cylinder, a radiator and a crankcase which are connected in sequence from top to bottom, wherein a piston is arranged in the air cylinder, the lower end of the piston is connected with a piston rod, the lower end of the piston rod is connected with a crankshaft, the crankshaft is positioned in the crankcase, two opposite sides of the air cylinder are respectively provided with a motor and a carburetor, and the inner cavity of the carburetor is communicated with the combustion chamber of the air cylinder;
the micro engine further comprises a transmission system as above, a first transmission wheel of the transmission system is in transmission connection with an output shaft of the motor, the first transmission wheel and a second transmission wheel are respectively arranged at two opposite ends of the crankshaft, a third transmission wheel and the second transmission wheel are located at the same side of the cylinder, and the camshaft is horizontally arranged in the cylinder in a penetrating mode.
The utility model discloses still provide a model car, this model car includes the microengine of as above arbitrary item.
The utility model discloses carry out rational arrangement and connection with a plurality of drive wheels, make whole micro-engine's transmission system simple structure and compactness.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of a transmission system of a midrange micro-engine according to the present invention;
FIG. 2 is a schematic view of a micro-engine according to the present invention at a viewing angle;
fig. 3 is a schematic structural view of a micro-engine according to another embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same elements or elements having the same function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
The utility model provides a micro-engine's transmission system, as shown in figure 1, this transmission system includes:
the first driving wheel 1 is in transmission connection with an output shaft 21 of the motor 2;
the second transmission wheel 3 is connected with the first transmission wheel 1 through a crankshaft 4, and the axis of the crankshaft 4 is connected with a piston rod 6 of an engine cylinder 5;
the third driving wheel 7 is in transmission connection with the second driving wheel 3;
the camshaft 8 is arranged in the center of the third driving wheel 7 in a penetrating mode, and the camshaft 8 is used for driving a valve transmission assembly 9 of the engine to move up and down;
the first transmission wheel 1 and the second transmission wheel 3 are respectively positioned at two opposite sides of a crankcase 15 of the engine, and the second transmission wheel 3 and the third transmission wheel 7 are positioned at the same side of the crankcase 15.
In this embodiment, the motor 2 is used for providing initial power for the engine, when the motor 2 works, the first transmission wheel 1 is driven to rotate along with the first transmission wheel 1 through a belt, a chain and the like, the second transmission wheel 3 is connected with the first transmission wheel 1 through a crankshaft 4, the first transmission wheel and the second transmission wheel rotate synchronously, the third transmission wheel 7 is driven to rotate by the second transmission wheel 3 through a belt, a chain and the like, the third transmission wheel 7 is arranged on a cam shaft 8, two or four cams are arranged on the cam shaft 8, two adjacent cams are arranged in a staggered manner, and along with the rotation of the third transmission wheel 7, the cam shaft 8 drives each cam to rotate, so that the valve transmission assembly 9 corresponding to the lower portion of each cam moves up and down to complete air intake. The air intake here means that the gas mixed with fuel and air is input into the cylinder 5, the gas mixture is ignited by the igniter and then combusted, the piston 17 in the cylinder 5 is driven to move downwards, the piston rod 6 movably connected with the bottom of the piston 17 is connected with the axis of the crankshaft 4 between the first transmission wheel 1 and the second transmission wheel 3, the crankshaft 4 rotates along with the up-and-down movement of the piston rod 6, so as to drive the first transmission wheel 1 and the second transmission wheel 3 to rotate, the first transmission wheel 1 can output power outwards, and the second transmission wheel 3 continues to drive the camshaft 8 to rotate through the third transmission wheel 7. After the first transmission wheel 1, the second transmission wheel 3 and the third transmission wheel 7 are stably transmitted, the motor 2 stops running.
The first transmission wheel 1 and the second transmission wheel 3 are respectively positioned at two sides of a crankcase 15, a crankshaft 4 between the first transmission wheel and the second transmission wheel is positioned in the crankcase 15, the second transmission wheel 3 and the third transmission wheel 7 are positioned at the same side of the crankcase 15, an engine cylinder 5 is positioned above the crankcase 15, a radiator 16 is further arranged between the cylinder 5 and the crankshaft 4, and the camshaft 8 is positioned above a combustion chamber of the cylinder 5. The utility model discloses simple structure and compactness.
In a preferred embodiment, as shown in fig. 1, the first transmission wheel 1 is in driving connection with the output shaft 21 of the motor 2 through a first belt 10, and the second transmission wheel 3 and the third transmission wheel 7 are in driving connection through a second belt 11.
The characteristics of the belt that the noise is little, wear-resisting, quick detachable and the clearance of this embodiment make full use of, adopt the belt as the driving medium between first drive wheel 1 and motor 2 output shaft 21, second drive wheel 3 and the third drive wheel 7, make whole micro-engine's noise reduction, life improve to and maintenance cost reduce.
In a preferred embodiment, as shown in fig. 1, the transmission system further includes an impeller 12 and a belt pressing wheel 13 which are located on the same side as the second transmission wheel 3 and the third transmission wheel 7, the belt pressing wheel 13, the second transmission wheel 3 and the third transmission wheel 7 are connected at their centers to form a triangular space, the impeller 12 is located in the triangular space, the second belt 11 sequentially surrounds the second transmission wheel 3, the belt pressing wheel 13 and the third transmission wheel 7, and the outer side of the second belt 11 is pressed against the rotating shaft of the impeller 12; the impeller 12 is provided with blades 14.
In this embodiment, the impeller 12 with the blades 14 rotates to make the air in the engine casing flow rapidly, and the temperature in the engine casing can be reduced by matching the air outlet and the air inlet arranged on the engine casing.
In order to enable the impeller 12 to be in full contact with the second belt 11 and rotate under the driving of the second belt 11, a belt pressing wheel 13 is additionally arranged in the embodiment, the belt pressing wheel 13 and the impeller 12 are located on one side of a connecting line of the second transmission wheel 3 and the third transmission wheel 7, and the distance between the belt pressing wheel 13 and the connecting line is larger than that between the impeller 12 and the connecting line, so that the centers of the belt pressing wheel 13, the second transmission wheel 3 and the third transmission wheel 7 are combined to form a triangular space, and the impeller 12 is located in the triangular space, the second belt 11 is further sequentially arranged around the second transmission wheel 3, the belt pressing wheel 13 and the third transmission wheel 7, and a part of the second belt 11 located between the second transmission wheel 3 and the belt pressing wheel 13 is arranged around the impeller 12, so that the impeller 12 is abutted. The part of the second belt 11 between the second transmission wheel 3 and the third transmission wheel 7 is still kept in a straight line type; or a portion of the second belt 11 located between the second transmission wheel 3 and the third transmission wheel 7 is passed around the impeller 12, thereby forming an abutment on the impeller 12. While the portion of the second belt 11 between the second transmission wheel 3 and the pinch roller 13 remains straight.
In a preferred embodiment, as shown in fig. 1, the pinch roller 13 is disposed on the cylinder 5 of the engine by a pinch roller 13 shaft, and the impeller 12 is disposed on the radiator 16 between the cylinder 5 and the crankcase 15 by an impeller 12 shaft.
In this embodiment, the pinch roller 13 shaft and the camshaft 8 are both located on the cylinder 5 body, wherein the camshaft 8 is rotatable relative to the cylinder 5 body, the pinch roller 13 shaft is fixed relative to the cylinder 5 body, and the pinch roller 13 is rotatably connected to the pinch roller 13 shaft. Similarly, the impeller 12 is fixed to the heat sink 16, and the impeller 12 is rotatably connected to the impeller 12. In the embodiment, the central shafts of the impeller 12, the pinch roller 13, the crankshaft 4 and the camshaft 8 are all parallel to each other, and the impeller 12, the pinch roller 13, the second transmission wheel 3 and the third transmission wheel 7 are all positioned on the same side of the crankcase 15.
In a preferred embodiment, as shown in fig. 1, the valve train assembly 9 includes a rocker arm 91 driven by the camshaft 8 to rotate along a fixed axis, a tappet body 92 driven by a free end of the rocker arm 91 to move up and down, and a valve 93 connected to the tappet body 92, a lower end of the valve 93 being located in the engine cylinder 5.
The rocker arm 91 is fixed on a fixed shaft parallel to the axial direction of the camshaft 8, one end of the rocker arm 91 is kept in butt joint with a cam on the camshaft 8, the other end of the rocker arm 91 is connected with or in butt joint with the upper end of a tappet body 92, the lower end of the tappet body 92 is connected with a valve 93, and the valve 93 is matched with an air port on a cylinder body of the cylinder 5 and can complete the actions of air exhaust and air intake along with the up-and-down movement. And a piston 17 arranged in the cylinder body is matched with the valve 93, the lower end of the piston 17 is connected with a piston rod 6, and the lower end of the piston rod 6 is connected with the crankshaft 4. After the mixed gas enters the cylinder body, the mixed gas is ignited to enlarge the cylinder 5 in the cylinder body, the piston 17 is driven to move, the crankshaft 4 correspondingly drives the first transmission wheel 1 to output kinetic energy outwards, and meanwhile, the second transmission wheel 3, the third transmission wheel 7 and the camshaft 8 rotate in sequence, so that the valve 93 is opened to exhaust gas, and the other valve 93 is closed to intake gas.
The utility model also provides a micro engine, as shown in fig. 2 and 3, this micro engine includes from last cylinder 5 to connecting gradually down, radiator 16 and crankcase 15, the lower extreme that is equipped with piston 17 in the cylinder 5 is connected with piston rod 6, the lower extreme of piston rod 6 is connected with bent axle 4, bent axle 4 is located crankcase 15, the relative both sides of cylinder 5 are equipped with motor 2 and carburetor 18 respectively, the inner chamber of carburetor 18 communicates with the combustion chamber of cylinder 5, carburetor 18 is used for providing the fuel and the air of mixing to in the combustion chamber of cylinder 5.
The micro-engine further comprises a transmission system as in any one of the above embodiments, as shown in fig. 1, the transmission system at least comprises a first transmission wheel 1, and the first transmission wheel 1 is in transmission connection with an output shaft 21 of a motor 2; the second transmission wheel 3 is connected with the first transmission wheel 1 through a crankshaft 4, the axis of the crankshaft 4 is connected with a piston rod 6 of an engine cylinder 5, and the upper end of the piston rod 6 is connected with a piston 17 in the cylinder 5; the third driving wheel 7 is in transmission connection with the second driving wheel 3; the camshaft 8 is arranged in the center of the third driving wheel 7 in a penetrating mode, and the camshaft 8 is used for driving a valve transmission assembly 9 of the engine to move up and down; wherein, the first transmission wheel 1 and the second transmission wheel 3 are respectively positioned at two sides of a crankcase 15 of the engine (also positioned at two opposite sides of the cylinder 5), and the second transmission wheel 3 and the third transmission wheel 7 are positioned at the same side of the crankcase 15. The whole structure of the miniature engine is simple and compact.
The utility model discloses still provide a model car, this model car includes the microengine of a last embodiment. The model car has the advantages of simple and compact structure and lower manufacturing and maintenance cost.
The above is only the part or the preferred embodiment of the present invention, no matter the characters or the drawings can not limit the protection scope of the present invention, all under the whole concept of the present invention, the equivalent structure transformation performed by the contents of the specification and the drawings is utilized, or the direct/indirect application in other related technical fields is included in the protection scope of the present invention.
Claims (7)
1. A transmission system for a microengine, comprising:
the first driving wheel is in transmission connection with an output shaft of the motor;
the second transmission wheel is connected with the first transmission wheel through a crankshaft, and the axis of the crankshaft is connected with a piston rod of an engine cylinder;
the third driving wheel is in transmission connection with the second driving wheel;
the cam shaft penetrates through the center of the third driving wheel and is used for driving a valve driving component of the engine to move up and down;
the first transmission wheel and the second transmission wheel are respectively positioned on two opposite sides of a crankcase of the engine, and the second transmission wheel and the third transmission wheel are positioned on the same side of the crankcase of the engine.
2. The transmission system according to claim 1, wherein said first drive wheel is drivingly connected to said motor output shaft by a first belt, and said second and third drive wheels are drivingly connected by a second belt.
3. The transmission system according to claim 2, further comprising an impeller and a pinch roller which are located on the same side as the second transmission wheel and the third transmission wheel, wherein the pinch roller, the second transmission wheel and the third transmission wheel are connected by a center connecting line to form a triangular space, the impeller is located in the triangular space, the second belt sequentially surrounds the second transmission wheel, the pinch roller and the third transmission wheel, and the outer side of the second belt is pressed against a rotating shaft of the impeller; the impeller is provided with blades.
4. The transmission system of claim 3, wherein the pinch roller is disposed on a cylinder of an engine by a pinch roller shaft, and the impeller is disposed on a radiator between the cylinder and the crankcase by an impeller shaft.
5. The transmission system according to claim 1, wherein the valve train assembly includes a rocker arm driven by the camshaft to rotate along a fixed shaft, a tappet body driven by a free end of the rocker arm to move up and down, and a valve connected to the tappet body, a lower end of the valve being located in the engine cylinder.
6. A micro engine is characterized by comprising an air cylinder, a radiator and a crankcase which are sequentially connected from top to bottom, wherein a piston is arranged in the air cylinder, the lower end of the piston is connected with a piston rod, the lower end of the piston rod is connected with a crankshaft, the crankshaft is positioned in the crankcase, two opposite sides of the air cylinder are respectively provided with a motor and a carburetor, and the inner cavity of the carburetor is communicated with a combustion chamber of the air cylinder;
the micro-engine further comprises a transmission system as claimed in any one of claims 1 to 5, wherein a first transmission wheel of the transmission system is in transmission connection with an output shaft of the motor, the first transmission wheel and a second transmission wheel are respectively arranged at two opposite ends of the crankshaft, the third transmission wheel and the second transmission wheel are positioned at the same side of the cylinder, and the camshaft is horizontally arranged in the cylinder in a penetrating manner.
7. A model car characterized by comprising the microengine of claim 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921432479.0U CN210460865U (en) | 2019-08-30 | 2019-08-30 | Transmission system, micro engine and model car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921432479.0U CN210460865U (en) | 2019-08-30 | 2019-08-30 | Transmission system, micro engine and model car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210460865U true CN210460865U (en) | 2020-05-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921432479.0U Active CN210460865U (en) | 2019-08-30 | 2019-08-30 | Transmission system, micro engine and model car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210460865U (en) |
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2019
- 2019-08-30 CN CN201921432479.0U patent/CN210460865U/en active Active
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