Structure of variable valve pushing device

Abstract

The invention relates to a structure of a variable valve pushing device. The variable valve pushing device is installed on a power unit of a vehicle. The power unit is connected to a frame unit of the vehicle, the power unit is at least provided with a cylinder part and a transmission part, the cylinder part is connected with an air inlet pipe, and the variable valve pushing device is installed on the cylinder part; the variable valve pushing device is provided with an actuator and a pushing mechanism capable of being driven by the actuator. The actuator is mounted on the cylinder part in the vertical direction of a vehicle body, and the pushing mechanism is pivoted in a mounting part of the cylinder part; the actuator is provided with a body part and an actuating rod capable of freely extending out of or retracting into the body part; the pushing mechanism is provided with a pivoting part, and a driven tooth part and a pushing part which are arranged on the outer periphery of the pivoting part; therefore, the accuracy and the smoothness of the switching action between the high air inlet lift and the low air inlet lift of the vehicle serving as the air inlet valve can be improved.

Description

Technical Field

[0001] The present invention relates to a structure of a variable valve driving device, and particularly to a structure of a variable valve driving device that can improve the accuracy and smoothness of the switching action between high intake lift and low intake lift of the intake valve of a vehicle, making the switching action between high intake lift and low intake lift of the intake valve more precise and smoother. Background Art

[0002] For the variable valve lift mechanism of an internal combustion engine, the applicant applied for the patent case of "Engine Valve Pushing Member Structure" with the number I379941; in order to make the variable valve lift mechanism of the internal combustion engine more precise and convenient, the applicant further created the variable valve lift mechanism of the internal combustion engine. Summary of the Invention

[0003]

Problems to be Solved by the Invention

[0004] The main object of the present invention is to provide a structure of a variable valve driving device to improve the accuracy and smoothness of the switching action between high intake lift and low intake lift of the intake valve of a vehicle.

[0005]

Technical Means for Solving the Problems

[0006] For this purpose, some technical means of the present invention are to provide a structure of a variable valve driving device. The variable valve driving device is installed on the power unit of a vehicle; the power unit is connected to the frame unit of the vehicle. The power unit at least has a cylinder part and a transmission part. An intake pipe is connected to the cylinder part. The variable valve driving device is installed on the cylinder part; the variable valve driving device has an actuator and a pushing mechanism that can be driven by the actuator; the actuator is installed on the cylinder part in the vertical direction of the vehicle body, and the pushing mechanism is pivotally arranged in the installation part of the cylinder part; the actuator has a body part and an actuating rod that can freely extend or retract into the body part; the pushing mechanism has a pivotal part, a passive gear part arranged on the outer periphery of the pivotal part, and a pushing part.

[0007] For this purpose, some technical means of the present invention are to provide a structure of a variable valve driving device, where the passive gear part and the pushing part can be formed integrally with the pivotal part, or one or all of the passive gear part and the pushing part are arranged on the outer periphery of the pivotal part in the form of separate parts.

[0008] For this purpose, some technical means of the present invention are to provide a structure of a variable valve driving device, where the passive gear part and the pushing part are arranged on the outer periphery of the pivotal part with a vertical displacement, and the long-axis axis of the pushing part is parallel to the radial axis of the pivotal part.

[0009] To this end, some technical means of the present invention lie in providing a structure of a variable valve actuating device, wherein the driven tooth part and the actuating part are respectively arranged on two sides of the outer periphery of the actuating part, and the driven tooth part, the pivoting part and the actuating part are configured in a coaxial manner.

[0010] To this end, some technical means of the present invention lie in providing a structure of a variable valve actuating device, wherein the vehicle's frame unit has a cross tube; the body part of the actuator is located between the lower part of the cross tube and the upper part of the cylinder part; when viewed from the front of the vehicle body, the top edge of the actuator is located between the lower edge of the intake pipe and the upper part of the cylinder part.

[0011] To this end, some technical means of the present invention lie in providing a structure of a variable valve actuating device, wherein the cylinder part is provided with a camshaft; when viewed from the front of the vehicle body, the body part of the actuator is located within the width range of the cylinder part in the left-right direction of the vehicle body, and the actuating rod is located above the axis of the camshaft in the left-right direction of the vehicle body; the frame unit has a side frame part, and the side frame part has a rising section; the cylinder part is provided with a camshaft; when viewed from the side of the vehicle body, the end of the body part of the actuator far from the actuating rod is located in front of the rising section and above the cylinder part; the vehicle has a footrest part; when viewed from the side of the vehicle body, the top edge of the body part of the actuator is located in the upper rear of the footrest part in the rearward direction of the vehicle body and above the cylinder part.

[0012] To this end, some technical means of the present invention lie in providing a structure of a variable valve actuating device, wherein the vehicle has a body cover unit, and a part of the body cover unit covering the front of the actuator is provided with an air inlet hole; when viewed from the side of the vehicle body, the body part of the actuator is located behind the air inlet hole.

[0013] To this end, some technical means of the present invention lie in providing a structure of a variable valve actuating device, when viewed from the top of the vehicle body, the actuator is located within the width range of the cylinder part in the left-right direction of the vehicle body and in front of the cross tube.

[0014] To this end, some technical means of the present invention lie in providing a structure of a variable valve actuating device, wherein the cylinder part has a piston actuating mechanism that can make the intake valve have a high intake lift and a low intake lift; the actuating rod of the actuator has an actuating tooth part; the actuating mechanism is pivotally arranged on the cylinder part with a pivot shaft of the pivoting part; the driven tooth part meshes with the actuating tooth part of the actuating rod; the actuator can drive the actuating mechanism to rotate, and the actuating mechanism can make the actuating part push the piston actuating mechanism; the actuating part is an eccentric cam.

[0015] To this end, some technical means of the present invention lie in providing a structure of a variable valve driving device. The driving mechanism rotates and actuates along a rotation axis extending in the front-rear direction of the vehicle body and is pivotally provided on the cylinder part; the actuator and the driving mechanism are arranged in a substantially perpendicular manner.

[0016]

Effects of the Invention

[0017] Through some technical means, the present invention can achieve the following effects: It can improve the accuracy and smoothness of the switching action of the intake valve of the vehicle between high intake lift and low intake lift.

[0018] Through some technical means, the present invention can achieve the following effects: It can improve the convenience of the driving mechanism.

[0019] Through some technical means, the present invention can achieve the following effects: It can improve and ensure the accuracy of the driving stroke of the driving mechanism.

[0020] Through some technical means, the present invention can achieve the following effects: It can improve the accuracy of the driving stroke of the driving mechanism.

[0021] Through some technical means, the present invention can achieve the following effects: It can make good use of the space above the cylinder part and avoid interference between the variable valve driving device and other components, and can also avoid interference between the variable valve driving device and other components.

[0022] Through some technical means, the present invention can achieve the following effects: It can make the switching action of the intake valve of the vehicle between high intake lift and low intake lift more accurate and smoother.

[0023] Through some technical means, the present invention can achieve the following effects: It can make good use of the space above the cylinder part and avoid interference between the variable valve driving device and other components, and facilitate the maintenance work of the variable valve driving device.

[0024] Through some technical means, the present invention can achieve the following effects: It can improve the heat dissipation effect of the actuator of the variable valve driving device.

[0025] Through some technical means, the present invention can achieve the following effects: It can ensure the actuation effect of the variable valve driving device.

[0026] Through some technical means, the present invention can achieve the following effects: It can avoid interference between other components in the left-right direction of the vehicle body and the variable valve driving device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a side view schematic diagram of the cross-riding vehicle of the present invention.

[0028] Figure 2 It is a top view of the rear part of the cross - riding vehicle of the present invention.

[0029] Figure 3 It is a front view of the rear part of the cross - riding vehicle of the present invention.

[0030] Figure 4 It is a schematic view of the installation of the variable valve actuating device of the present invention on the cylinder part.

[0031] Figure 5 It is a three - dimensional view of the actuator of the variable valve actuating device of the present invention.

[0032] Figure 6 It is a schematic view of the installation of the variable valve actuating device of the present invention on the cylinder part.

[0033] Figure 7 It is a schematic view of another perspective of the installation of the variable valve actuating device of the present invention on the cylinder part.

[0034] Figure 8 , 9 It is a sectional action view of the variable valve actuating device and the piston actuating mechanism of the present invention.

[0035] Figure 10 It is a three - dimensional view of the actuating mechanism of the variable valve actuating device of the present invention.

[0036] Figure 11 It is another embodiment of the actuating mechanism of the variable valve actuating device of the present invention.

[0037] List of reference numerals

[0038] 1: Motorcycle

[0039] 2: Frame unit

[0040] 21: Head tube part 22: Steering mechanism

[0041] 23: Down tube part

[0042] 24: Footrest tube part

[0043] 241: Footrest cross - tube

[0044] 25: Side frame part

[0045] 251: Rising section 252: Extension section

[0046] 253: Auxiliary tube 254: Extension part

[0047] 26: Cross - tube

[0048] 3: Seat

[0049] 4: Power unit

[0050] 41: Cylinder section

[0051] 411: Cylinder block

[0052] 412: Cylinder head

[0053] 4121: Mounting part 4122: Limiting mechanism

[0054] 413: Camshaft housing

[0055] 414: Camshaft 414a: Axis

[0056] 415: Intake valve pusher

[0057] 4151: First pusher

[0058] 4152: Second pusher

[0059] 416: Exhaust valve pusher

[0060] 417: Combustion chamber

[0061] 42: Transmission section 421: Power output shaft

[0062] 422: Driving wheel 423: Transmission belt

[0063] 424: Driven wheel

[0064] 43: Piston actuating mechanism

[0065] 431: First piston 432: Second piston

[0066] 433: Elastic element

[0067] 44: Crankcase

[0068] 5: Variable valve pusher device

[0069] 51: Actuator

[0070] 511: Body part 511a: Top edge

[0071] 512: Actuating rod

[0072] 513: Actuating tooth part

[0073] 52: Pushing mechanism

[0074] 521: Pivot part 5211: Pivot shaft

[0075] 522: Driven tooth part 523: Pushing part

[0076] 6: Vehicle body cover unit

[0077] 61: Front hood 62: Front panel

[0078] 63: Knee shield

[0079] 64: Footrest

[0080] 641: Bottom cover

[0081] 65: Side body cover

[0082] 66: Central body cover 661: Air inlet hole

[0083] 7: Air filter

[0084] 71: Intake pipe 71a: Upper edge

[0085] A: Front fork unit

[0086] B: Footrest part

[0087] C: Storage box

[0088] T: Fuel tank

[0089] L: Rear swing arm L1: Rear wheel axle

[0090] M: Longitudinal axis M1: Radial axis

[0091] FW: Front wheel RW: Rear wheel

[0092] V: Intake valve V1: Exhaust valve. Detailed implementation manners

[0093] To more easily understand the structure and achievable effects of the present invention, the following is an illustration in conjunction with the accompanying drawings.

[0094] First, please refer to Figure 1 、 4 As shown, the structure of the variable valve actuating device of the present invention is used in an internal combustion engine powered vehicle. Hereinafter, the vehicle of the present invention is exemplified by a straddle-type motorcycle 1; the motorcycle (vehicle) 1 at least includes a frame unit 2, a seat 3 provided on the frame unit 2, and a power unit 4. The power unit 4 is equipped with the variable valve actuating device 5, and a body cover unit 6 covering the outer periphery of the frame unit 2.

[0095] As shown in Figure 1 、 2As shown in FIGS. 3, etc., in the following description, the left and right sides of the vehicle body are defined as follows: after the driver sits on the motorcycle 1, the left side is the side on the driver's left hand, and the right side is the side on the driver's right hand. First, it should be stated clearly. A head tube portion 21 is pivotally provided in front of the frame unit 2. A steering mechanism 22 is connected above the head tube portion 21. The head tube portion 21 is connected to a down tube portion 23 towards the rear of the vehicle body. The down tube portion 23 is connected to a pair of left and right pedal tube portions 24 that extend towards the rear of the vehicle body and are slightly horizontal. A pedal cross tube 241 is connected below the pair of left and right pedal tube portions 24. The pedal tube portions 24 extend towards the rear of the vehicle to form a pair of left and right side frame portions 25. The side frame portions 25 have an ascending section 251 adjacent to the pedal tube portions 24 and an extending section 252 located at the rear section of the vehicle body. A pair of left and right auxiliary tubes 253 are provided between the ascending section 251 and the extending section 252 of the side frame portions 25, and a pair of left and right extending members 254 extend towards the rear of the vehicle body at a position where the ascending section 251 is adjacent to the pedal tube portions 24. A cross tube 26 is provided on the ascending section 251 to connect the pair of left and right ascending tubes 251. A front fork unit A formed by a front shock absorber is pivotally provided below the head tube portion 21. The lower end of the front fork unit A is pivotally provided with a front wheel FW.

[0096] As Figure 1 , 2 , 3, a footrest 64 of the vehicle body cover unit 6 that is slightly flat is provided on the slightly horizontal pedal tube portion 24 of the frame unit 2. A footrest portion B that is flat for the driver to rest his feet is formed by the footrest 64. Viewed from the up and down direction of the vehicle body, a fuel tank T for storing fuel for the explosion of the power unit 4 is installed in the internal space defined between the pair of left and right slightly horizontal pedal tube portions 24. The power unit 4 is connected to the frame unit 2 and is arranged further towards the rear of the vehicle body than the fuel tank T.

[0097] As Figure 1 , 2, as shown in FIGS. 2 and 3, a seat 3 for the driver to sit on is provided above the extension section 252 of the side frame part 25, and a storage box C is provided on the extension section 252 of the side frame part 25 and below the seat 3; the power unit 4 is locked to the auxiliary pipe 253 and the extension part 254 of the side frame part 25, and the power unit 4 is fixed to the frame unit 2 in a non-swinging manner; the power unit 4 has a cylinder part 41 and a transmission part 42, the cylinder part 41 extends obliquely forward towards the vehicle body and partially protrudes outside the rising section 251 of the side frame part 25, that is, the part of the cylinder part 41 extending forward towards the vehicle body protrudes more forward towards the vehicle body than the rising section 251 of the side frame part 25; the transmission part 42 is located at the rear right side of the cylinder part 41, and a power output shaft 421 extends in the left-right direction of the vehicle body at the rear end of the transmission part 42. A power wheel 422 is provided on one side of the power output shaft 421 (implemented on the left side of the vehicle body in the figure), and the power wheel 422 is connected to a driving wheel 424 on the rear wheel RW by a transmission belt 423; a rear swing arm L is pivotally provided at the power output shaft 421 of the transmission part 42. The front end of the rear swing arm L is pivotally provided on the transmission part 42, and the rear end of the rear swing arm L is provided with a rear wheel shaft L1 for the rear wheel RW to be pivotally provided. Thus, the power unit 4 rotates the rear wheel RW through the power output shaft 421 of the transmission part 42, the power wheel 422, the transmission belt 423, and the driving wheel 424.

[0098] As Figure 1 , 2 , as shown in FIGS. 2, 4, and 3, the vehicle body cover unit 6 has a front cover 61 covering the steering mechanism 22, a front panel 62 provided below the front cover 61 and covering the front end of the vehicle body, and a knee shield 63 provided behind the front panel 62, a footrest 64 provided below between the steering mechanism 22 and the seat 3. A bottom cover 641 is provided below the footrest 64. On both sides of the side frame part 25 below the seat 3 of the motorcycle 1, side body covers 65 are provided, and a central body cover 66 is provided below the front end of the seat 3; at least one air inlet hole 661 is provided on the vehicle body cover unit 6. The air inlet hole 661 can be formed by one or both of the left and right side body covers 65, or by the central body cover 66 or other maintenance covers between the left and right side body covers 65. In the implementation, the air inlet hole 661 of the present invention is provided on the central body cover 66. Further, a plurality of the air inlet holes 661 can be provided in the air inlet hole 661 of the central body cover 66. Only one air inlet hole 661 is drawn in the figure for example.

[0099] As Figure 1 , 2As shown in FIGS. 3, 4, 6, and 7, the cylinder portion 41 of the power unit 4 has a cylinder block 411 and a cylinder head 412 assembled on the cylinder block 411. The cylinder block 411 is disposed above a crankcase 44, and the transmission portion 42 is connected to one side of the crankcase 44. The fresh air required for the combustion explosion of the power unit 4 is supplied by an air filter 7. After filtering the external space, the air filter 7 inputs the filtered air into the cylinder portion 41 through an intake pipe 71 connected to the air filter 7 and the cylinder portion 41 of the power unit 4, so that it can be mixed with the fuel input from the fuel tank T and then combusted in the cylinder portion 41, thereby enabling the power unit 4 to generate power. A camshaft seat 413 is provided on the cylinder head 412, and a camshaft 414 driven by a timing chain (not shown in the figure) is provided on the camshaft seat 413. An intake valve V is provided on the intake side of the cylinder head 412, and an exhaust valve V1 is provided on the exhaust side. The intake valve V can be pushed by an intake valve pusher 415, and the exhaust valve V1 can be pushed by an exhaust valve pusher 416. A first intake cam (high lift cam) (not shown in the figure), a second intake cam (low lift cam) (not shown in the figure), and an exhaust cam (not shown in the figure) are respectively provided on the camshaft 414. The intake valve pusher 415 has a first pusher 4151 and a second pusher 4152. The pushing roller (not shown in the figure) of the first pusher 4151 is in contact with the first intake cam of the camshaft 414, and the pushing roller (not shown in the figure) of the second pusher 4152 is in contact with the second intake cam of the camshaft 414. It should be further mentioned that in this creation, the camshaft 414 is implemented with a single camshaft, and the camshaft 414 is disposed between the intake (exhaust) valve pusher 415 (416) and the combustion chamber 417.

[0100] As shown in Figure 8 、 9 FIGS. 3, 4, 6, and 7, a piston actuating mechanism 43 is provided between the first pusher 4151 and the second pusher 4152. The piston actuating mechanism 43 is configured to be away from the combustion chamber 417. The piston actuating mechanism 43 has a first piston 431, a second piston 432, and an elastic element 433. The first pusher 4151 and the second pusher 4152 are linked or not linked by the actuation of the first piston 431, the second piston 432, and the elastic element 433 of the piston actuating mechanism 43 (the actuation method of this part is the same as the existing one, so it will not be elaborated here). Thereby, the cylinder portion 41 of the power unit 4 can make the intake valve have different lift openings according to the driving state change by the engine control unit (ECU), so that the cylinder portion 41 of the power unit 4 has the effect of different intake lifts.

[0101] As shown in Figure 1 、 2As shown in Figures 3, 4, 5, 6, 7, 8, and 9, a variable valve push device 5 for pushing the piston actuating mechanism 43 is installed on the cylinder head 412 of the cylinder part 41 of the power unit 4. The variable valve push device 5 is electrically connected to the vehicle driving control center (ECU) of the motorcycle 1. Thus, the vehicle driving control center (ECU) can make the variable valve push device 5 act or not act according to the driving condition of the motorcycle 1. The variable valve push device 5 has an actuator 51 and a push mechanism 52 that can be driven by the actuator 51. The actuator 51 of the present invention can be implemented by an electromagnetic solenoid valve, a hydraulic power valve body, or a pneumatic power valve body. The following description and drawings will take the solenoid valve as an example for illustration. The actuator 51 is installed on the cylinder part 41 in the up-and-down direction of the vehicle body (in the figure, U is the upper direction of the vehicle body, D is the lower direction of the vehicle body, F is the front of the vehicle body, and R is the rear of the vehicle body). Further, the actuator 51 is installed on the cylinder head 412 of the cylinder part 41. The actuator 51 has a body part 511 and an actuating rod 512 that can freely extend or retract into the body part 511 and extends toward the camshaft 414. The actuating rod 512 has an actuating tooth part 513 formed by concave and convex parts. The push mechanism 52 rotates and actuates along a rotation axis extending in the front-and-rear direction of the vehicle body and is pivotally installed on the cylinder part 41. Further, an installation part 4121 is recessed on the cylinder head 412. The actuator 51 is installed in the installation part 4121 on the cylinder head 412 of the cylinder part 41. The installation part 4121 has a limit mechanism 4122 that can limit the rotation angle of the push mechanism 52. It should be mentioned that the actuator 51 and the push mechanism 52 are arranged in a substantially perpendicular manner. The push mechanism 52 has a pivot part 521, a passive tooth part 522 provided on the outer periphery of the pivot part 521, and a push part 523. The push mechanism 52 is pivotally installed in the installation part 4121 of the cylinder part 41 with a pivot shaft 5211 of the pivot part 521. Thus, the push mechanism 52 is driven by the actuator 51 to rotate with the pivot shaft 5211 as the rotation center. The passive tooth part 522 meshes with the actuating tooth part 513 of the actuating rod 512 of the actuator 51. Thus, when the actuator 51 acts, it can drive the push mechanism 52 to rotate. After the push mechanism 52 is driven to rotate, the push part 523 rotates. When the push part 523 rotates, it can push the piston actuating mechanism 43. Thus, the piston actuating mechanism 43 can make the intake valve pusher 415 switch between a high intake lift and a low intake lift. The push part 523 of the present invention can be implemented by an eccentric cam. It should be mentioned that the passive tooth part 522 of the push mechanism 52 and the actuating tooth part 513 of the actuating rod 512 of the actuator 51 further use different gear ratios to increase the rotation torque of the push mechanism 52 and can miniaturize the volume of the actuator 51.More specifically, the pushing portion 523 is implemented by an eccentric cam, which can improve the switching speed of the piston actuating mechanism 43 and the convenience of the operation of the piston actuating mechanism 43.

[0102] As Figure 10 , 11 shown, the driven tooth portion 522 of the pushing mechanism 52 and the pushing portion 523 can be integrally formed with the pivoting portion 521, or one or both of the driven tooth portion 522 and the pushing portion 523 are provided on the outer peripheral edge of the pivoting portion 521 in a separate part manner; wherein, the driven tooth portion 522 and the pushing portion 523 are provided on the outer peripheral edge of the pivoting portion 521 in a vertical displacement manner, and the long axis M of the pushing portion 523 is parallel to the radial axis M1 of the pivoting portion 521; in practice, the driven tooth portion 522 and the pushing portion 523 can also be respectively provided on both sides of the outer peripheral edge of the pushing portion 523, and the driven tooth portion 522, the pivoting portion 521 and the pushing portion 523 are arranged in a coaxial manner.

[0103] As Figure 1 , 2 As shown in Figures 3, 4, 5, 6, 7, 8, 9, the specific configuration of the variable valve pushing device 5 of the present invention is such that, when viewed from the front of the vehicle body, the top edge 511a of the body portion 511 of the actuator 51 is designed to be located between the upper edge 71a of the intake pipe 71 and above the cylinder portion 41; when viewed from the front of the vehicle body, the body portion 511 of the actuator 51 is located below the cross pipe 26 and above the cylinder portion 41; when viewed from the front of the vehicle body, the body portion 511 of the actuator 51 is located within the width range of the cylinder portion 41 in the left-right direction of the vehicle body, and the actuating rod 512 is located above the axis 414a of the camshaft 414 in the left-right direction of the vehicle body; when viewed from the side of the vehicle body (taking the left side of the vehicle body as an example in the figure), the end of the body portion 511 of the actuator 51 away from the actuating rod 512 is located in front of the rising section 251 of the side frame portion 25 and above the cylinder portion 41; when viewed from the side of the vehicle body, the top edge 511a of the body portion 511 of the actuator 51 is located in the upper rear of the footrest portion B in the rearward direction of the vehicle body and above the cylinder portion 41; when viewed from the side of the vehicle body, the body portion 511 of the actuator 51 is located behind the central vehicle body cover 66 of the vehicle body cover unit 6 in the rearward direction of the vehicle body, more specifically, the body portion 511 of the actuator 51 is located behind the air inlet hole 661 of the central vehicle body cover 66, whereby when the motorcycle 1 is running, the external cold air can enter through the air inlet hole 661 to cool the actuator 51, thereby improving the use effect of the actuator 51; when viewed from the top of the vehicle body, the actuator 51 is located within the width range of the cylinder portion 41 in the left-right direction of the vehicle body and in front of the cross pipe 26.

[0104] In the present invention, a variable valve driving device 5 is installed on a power unit 4 of a vehicle 1; the power unit 4 is connected to a frame unit 2 of the vehicle 1, and the power unit 4 at least has a cylinder part 41 and a transmission part 42. An intake pipe 71 is connected to the cylinder part 41, and the variable valve driving device 5 is installed on the cylinder part 41; the variable valve driving device 5 has an actuator 51 and a driving mechanism 52 that can be driven by the actuator 51; the actuator 51 is installed on the cylinder part 41 in the up-and-down direction of the vehicle body. A camshaft 414 is provided in the cylinder part 41; when viewed from the front of the vehicle body, the top edge 511a of the actuator 51 is located below the upper edge 71a of the intake pipe 71 and above the axis 414a of the camshaft 414 in the left-right direction of the vehicle body. The driving mechanism 52 is pivotally provided in an installation part 4121 of the cylinder part 41; the actuator 51 has a main body part 511 and an actuating rod 512 that can freely extend or retract into the main body part 511; the driving mechanism 52 has a pivotal part 521, a driven tooth part 522 provided on the outer periphery of the pivotal part 521, and a driving part 523; thereby, the accuracy and smoothness of the switching action of the intake valve of the vehicle 1 for high intake lift and low intake lift can be improved.

[0105] In summary, with the above-described structure, the present invention can indeed improve the existing drawbacks and achieve the desired purpose and effect, and should already meet the practicality, novelty, and creativity described in the invention patent.

Claims

1. A structure of a variable valve driving device, characterized in that: The variable valve push device is installed on the power unit of the vehicle; the power unit is connected to the frame unit of the vehicle, the power unit has at least a cylinder part and a transmission part, the cylinder part is connected to an intake pipe, and the variable valve push device is installed on the cylinder part; the variable valve push device has an actuator and a pushing mechanism that can be driven by the actuator; the actuator is installed on the cylinder part in the up and down direction of the vehicle body, and the pushing mechanism is pivotally arranged in the mounting part of the cylinder part; the actuator has a main body part and an actuating rod that can be freely extended or retracted into the main body part; the pushing mechanism has a pivot part, a passive gear part arranged on the outer periphery of the pivot part, and a pushing part.

2. The structure of the variable valve actuator according to claim 1, characterized in that: The passive tooth portion and the pushing portion may be integrally formed with the pivot portion, or one or both of the passive tooth portion and the pushing portion may be separately provided on the outer periphery of the pivot portion.

3. The structure of the variable valve driving device according to claim 1 or 2, characterized in that: The passive tooth portion and the pushing portion are arranged on the outer periphery of the pivot portion in an up-and-down position difference manner, and the long axial axis of the pushing portion is arranged in parallel with the radial axis of the pivot portion.

4. The structure of the variable valve driving device according to claim 1 or 2, characterized in that: The passive tooth portion and the pushing portion are respectively arranged on two sides of the outer periphery of the pushing portion, and the passive tooth portion, the pivot portion and the pushing portion are arranged in a coaxial manner.

5. The structure of the variable valve actuator according to claim 1, characterized in that: The frame unit of the vehicle has a cross tube; the main body of the actuator is located between the bottom of the cross tube and the top of the cylinder; when viewed from the front of the vehicle body, the top edge of the actuator is located between the bottom of the upper edge of the intake pipe and the top of the cylinder.

6. The structure of the variable valve actuator according to claim 5, characterized in that: The cylinder portion has a camshaft therein; when viewed from the front of the vehicle body, the main body of the actuator is located within the width of the cylinder portion in the left-right direction of the vehicle body, and the actuating rod is located above the axis of the camshaft in the left-right direction of the vehicle body; the frame unit has a side frame portion, and the side frame portion has a rising section; the cylinder portion has a camshaft therein; when viewed from the side of the vehicle body, the end of the main body of the actuator away from the actuating rod is located in front of the rising section and above the cylinder portion; the vehicle has a footrest; when viewed from the side of the vehicle body, the top edge of the main body of the actuator is located at the upper rear of the footrest in the direction toward the rear of the vehicle body and above the cylinder portion.

7. The structure of the variable valve actuator according to claim 5, characterized in that: The vehicle has a vehicle body cover unit, and a portion of the vehicle body cover unit covering the front of the actuator is provided with an air inlet hole; when viewed from the side of the vehicle body, the main body of the actuator is located behind the air inlet hole.

8. The structure of the variable valve actuator according to claim 3, characterized in that: When viewed from above the vehicle body, the actuator is located within the width of the cylinder portion in the left-right direction of the vehicle body and in front of the cross pipe.

9. The structure of the variable valve actuator according to claim 1, characterized in that: The cylinder part has a piston actuating mechanism that can make the intake valve have high intake lift and low intake lift; the actuating rod of the actuator has an actuating tooth portion; the pushing mechanism is pivoted on the cylinder part by a pivot of the pivot portion; the passive tooth portion is meshed with the actuating tooth portion of the actuating rod; the actuator can drive the pushing mechanism to rotate, and the pushing mechanism can make the pushing portion push the piston actuating mechanism; the pushing portion is an eccentric cam.

10. The structure of the variable valve driving device according to claim 1 or 9, characterized in that: The pushing mechanism is pivotally mounted on the cylinder portion and is rotated along a rotation axis extending in the front-rear direction of the vehicle body; the actuator is arranged in a substantially perpendicular manner to the pushing mechanism.

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