Engine and motorcycle using the same

Abstract

The application discloses an engine and a motorcycle adopting the engine. The engine comprises a shell part, a bolt fastener and a sealing washer. The bolt fastener is arranged in the sealing washer and connected with the shell part. The sealing washer comprises a sealing hole for the bolt fastener. A convex part capable of being elastically deformed is formed on the inner wall of the sealing hole. The convex part makes the inner diameter of the sealing hole smaller than the diameter of the bolt fastener. Through the above arrangement, the assembly efficiency of the bolt fastener can be improved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to an engine and a motorcycle using the engine. Background Technology

[0002] A motorcycle is a vehicle that is steered by the front wheel using handlebars. It is characterized by its lightness, agility, and speed, and is widely used in patrol, passenger and freight transport, and other fields. A motorcycle typically includes a frame, body panels, running gear, suspension system, seat, electrical system, and engine.

[0003] During motorcycle assembly, when installing components requiring sealing, bolts and gaskets are typically used for fastening and sealing. The process involves placing the gasket over the bolt and then tightening the component. However, during bolt assembly, the gasket may slip off, requiring workers to repeatedly apply and replace it, thus reducing assembly efficiency. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, the purpose of this application is to provide an engine and a motorcycle using the engine, which can improve the assembly efficiency of bolt fasteners.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] An engine includes a housing component, bolts, and a sealing gasket. The bolts pass through the sealing gasket and are connected to the housing component. The sealing gasket includes a sealing hole through which the bolts pass. The inner wall of the sealing hole has a protrusion that is elastically deformable, such that the inner diameter of the sealing hole is smaller than the diameter of the bolts.

[0007] Furthermore, the protrusion is annular, and the inner diameter of the protrusion is smaller than the diameter of the bolt fastener; the inner peripheral wall of the protrusion is attached to and abuts against the outer peripheral of the bolt fastener, forming a sealing assembly, which can seal the two sides of the sealing assembly along the center line of the sealing hole.

[0008] Furthermore, the sealing gasket includes a first abutting wall and a second abutting wall, which are located on both sides of the sealing gasket along the center line of the sealing hole. The first abutting wall is provided with a first sealing part, and the bolt fastener is provided with an abutting mating surface. The first sealing part abuts against the abutting mating surface along the center line of the sealing hole, forming a first abutting joint with an annular structure. The first abutting joint can seal and isolate the inner and outer areas of the first abutting joint.

[0009] Furthermore, a second sealing part is provided on the second abutting wall. The second sealing part abuts against the housing component along the center line of the sealing hole and forms a second abutting assembly with an annular structure. The second abutting assembly can seal and isolate the inner and outer areas of the second abutting assembly.

[0010] Furthermore, along the radial direction of the sealing hole, the first sealing part is closer to the center line of the sealing hole than the second sealing part.

[0011] Furthermore, the sealing gasket has an air cavity located between the first abutment wall and the second abutment wall.

[0012] Furthermore, in a plane perpendicular to the centerline of the sealing hole, the orthographic projection of the air cavity at least partially coincides with the orthographic projection of the first sealing part, and the orthographic projection of the air cavity at least partially coincides with the orthographic projection of the second sealing part; along the radial direction of the sealing hole, the center projection of the protrusion at least partially coincides with the center projection of the air cavity.

[0013] Furthermore, along the centerline of the sealing hole, the distance between the protrusion and the first abutting wall is less than or equal to the distance between the protrusion and the second abutting wall.

[0014] Furthermore, the first sealing part is located near the edge of the first abutting wall close to the sealing hole, and the edge of the first sealing part is connected to one of the openings of the sealing hole.

[0015] To achieve the above objectives, this application also adopts the following technical solution:

[0016] A motorcycle includes a frame, body panels, a running gear, and an engine, wherein the body panels at least partially cover the frame; the running gear is at least partially located below the frame; the engine is supported by the frame and drivenly connected to the running gear; the engine includes an oil pan, a crankcase, a cylinder block, a cylinder head, and a cylinder head cover arranged in sequence.

[0017] The housing component is a cylinder head cover, and bolts and fasteners are used to connect the cylinder head cover and the cylinder head; or, the housing component is a cylinder head, and the engine also includes a timing mechanism, the cylinder head has a timing chamber for accommodating the timing mechanism and shock-absorbing bolt holes that connect the timing chamber to the outside, and bolts and fasteners and sealing washers are used to seal the shock-absorbing bolt holes; or, the housing component is an oil pan, the oil pan has a drain hole, and bolts and fasteners and sealing washers are used to seal the drain hole.

[0018] In this application, the sealing gasket and the bolt fastener can be made to have an interference fit, thereby preventing the sealing gasket from falling off the bolt fastener during the bolt fastener assembly process, which in turn helps to improve the assembly efficiency of the bolt fastener. Attached Figure Description

[0019] Figure 1This is a schematic diagram of the overall structure of a motorcycle provided in an embodiment of this application.

[0020] Figure 2 This is a schematic diagram of the overall structure of a motorcycle engine provided in an embodiment of this application.

[0021] Figure 3 This is an exploded schematic diagram of a motorcycle engine provided in an embodiment of this application.

[0022] Figure 4 This is a schematic diagram of the combination of a first component, a second component, bolts, fasteners, and sealing gaskets for a motorcycle provided in an embodiment of this application.

[0023] Figure 5 This is a cross-sectional schematic diagram of the first component, the second component, the bolt fasteners, and the sealing gasket of the motorcycle provided in the embodiments of this application.

[0024] Figure 6 This is a schematic diagram of the structure of a motorcycle cylinder head provided in an embodiment of this application.

[0025] Figure 7 This is a schematic diagram of the structure of the oil pan of a motorcycle provided in an embodiment of this application. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present application, the technical solutions in specific embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0027] like Figure 1 and Figure 2 As shown, this application provides a motorcycle 100, which includes a frame 11, a body panel 12, a running system 13, a suspension system 14, a seat 15, an electrical system 16, a transmission system (not shown) and an engine 200.

[0028] For ease of description, this application defines the directions of front, back, left, right, up, and down. The front-back direction refers to the length direction of the motorcycle frame 11, the left-right direction refers to the width direction of the motorcycle frame 11, and the up-down direction refers to the height direction of the motorcycle frame 11. In this embodiment, the directions of front, back, left, right, up, and down are based on the motorcycle 100 traveling on a level road surface, not on a sloping road surface.

[0029] The frame 11 serves as the basic framework of the motorcycle 100, supporting the body panel 12, running system 13, suspension system 14, seat 15, electrical system 16, transmission system, and engine 200. The body panel 12 is at least partially located on and connected to the frame 11, protecting the internal components of the motorcycle 100. The running system 13 is at least partially located below the frame 11, and the suspension system 14 connects the running system 13 to the frame 11. The engine 200 is supported by the frame 11. The electrical system 16 is supported by the frame 11 and is at least partially mounted on the body panel 12 or the frame 11. The electrical system 16 is used to display the motorcycle 100's driving data and control the motorcycle 100's operation. The seat 15 is supported by the frame 11 and is used to support the driver and / or passenger. The transmission system is used to transmit power from the engine 200. The transmission system includes a gear shift mechanism, which is supported by the frame 11 and connects the engine 200 to the running system 13.

[0030] like Figure 3 As shown, the engine 200 includes a housing 21, a crankshaft 22, an intake mechanism 23, an ignition mechanism (not shown), a timing mechanism 25, and a piston mechanism 26. The housing 21 serves as the basic frame of the engine, supporting the crankshaft 22, intake mechanism 23, ignition mechanism, timing mechanism 25, and piston mechanism 26. Specifically, the housing 21 includes a cylinder head cover 211, a cylinder head 212, a cylinder block 213, a crankcase 214, and an oil pan 215, which are connected sequentially. The cylinder head 212 and cylinder block 213 are connected to form a combustion chamber. The intake mechanism 23 is connected to the cylinder head 212 and supplies air to the combustion chamber to mix air and fuel to form an air-fuel mixture. The ignition mechanism is at least partially located within the combustion chamber and is used to ignite the air-fuel mixture. A piston mechanism 26 is at least partially located within the cylinder block 213. The piston mechanism 26 converts the thermal energy generated by the combustion of the air-fuel mixture into mechanical energy. Specifically, the piston mechanism 26 includes a piston that converts thermal energy into reciprocating mechanical energy. A crankshaft 22 is at least partially located within a crankcase 214 and is rotatably connected to the crankcase 214. The crankshaft 22 converts the reciprocating motion of the piston into rotational motion and is drive-connected to a transmission mechanism. A timing mechanism 25 is at least partially located within the cylinder head 212 and is drive-connected to the crankshaft 22. The timing mechanism 25 controls the intake and exhaust of the engine.

[0031] like Figure 4 , Figure 5As shown, in one embodiment, the engine includes a housing component 35, bolts 37, and a sealing washer 38. The bolts 37 pass through the sealing washer 38 and are connected to the housing component 35, so that the sealing washer 38 and the housing component 35 are fixedly connected by the bolts 37.

[0032] Specifically, the sealing washer 38 includes a sealing hole 381 for the bolt fastener 37 to pass through. More specifically, a protrusion 3811 is formed on the inner wall of the sealing hole 381, such that the inner diameter of the sealing hole 381 is smaller than the diameter of the bolt fastener 37, and the protrusion 3811 is elastically deformable. This design ensures that the deformable protrusion 3811 does not interfere with the sealing washer 38 being fitted onto the bolt fastener 37. Furthermore, when the sealing washer 38 is fitted onto the bolt fastener 37, the deformable protrusion 3811 provides elasticity to the sealing washer 38, allowing for an interference fit between the sealing washer 38 and the bolt fastener 37. This improves the friction between the sealing washer 38 and the bolt fastener 37, preventing the sealing washer 38 from falling off the bolt fastener 37 during assembly, thereby improving the assembly efficiency of the bolt fastener 37.

[0033] As an optional implementation, the protrusion 3811 is basically annular in shape, and its inner diameter is smaller than that of the bolt fastener 37. The inner circumferential wall of the protrusion 3811 adheres to and abuts against the outer circumference of the bolt fastener 37, forming a sealing assembly. This sealing assembly can seal the two sides of the sealing assembly along the centerline of the sealing hole 381. This design increases the contact area between the annular protrusion 3811 and the bolt fastener 37, thereby improving the friction between them and enhancing the stability of the sealing washer 38 on the bolt fastener 37. During bolt fastener assembly, the protrusion 3811 prevents the sealing washer 38 from detaching from the bolt fastener 37, thus improving assembly efficiency.

[0034] In one embodiment, the sealing gasket 38 includes a first abutting wall 382 and abutting wall 384, which are located on both sides of the sealing gasket 38 along the centerline of the sealing hole 381. Specifically, the sealing gasket 38 is provided with a first sealing portion 383, and the bolt fastener 37 is provided with an abutting mating surface 371. The first sealing portion 383 abuts against the abutting mating surface 371 along the centerline of the sealing hole 381, forming a first abutting joint with an annular structure. The first abutting joint can seal and isolate the inner and outer areas of the first abutting joint. In this embodiment, by providing the first sealing portion 383, the clamping force between the abutting mating surface 371 and the sealing gasket 38 can be increased when assembling the bolt fastener 37, thereby improving the sealing performance between the abutting mating surface 371 and the sealing gasket 38.

[0035] As an optional implementation, the sealing gasket 38 is provided with a second sealing portion 385. The second sealing portion 385 abuts against the housing component 35 along the centerline of the sealing hole 381, forming a second abutting assembly with an annular structure. The second abutting assembly can seal and isolate the inner and outer areas of the second abutting assembly. With this configuration, the distance between the second abutting wall 384 and the housing component 35 can be shortened by the second sealing portion 385. Therefore, when assembling the bolt fastener 37, the clamping force between the housing component 35 and the sealing gasket 38 can be increased by the second sealing portion 385, thereby improving the sealing performance between the housing component 35 and the sealing gasket 38.

[0036] In one embodiment, along the radial direction of the sealing hole 381, the first sealing portion 383 is closer to the centerline of the sealing hole 381 than the second sealing portion 385. This arrangement allows the first sealing portion 383 and the second sealing portion 385 to be staggered along the axial direction of the sealing gasket 38. This arrangement avoids the first sealing portion 383 and the second sealing portion 385 being substantially overlapping along the axial direction of the sealing gasket 38, which would result in excessive thickness of the sealing gasket 38 at the same position along the axial direction. This prevents the sealing gasket 38 from becoming too thick, thus avoiding a reduction in its deformation capacity and ultimately improving its sealing performance.

[0037] like Figure 5 As shown, in one embodiment, the sealing gasket 38 is provided with an air cavity 386, which is located between the first abutment wall 382 and the second abutment wall 384. This arrangement allows the sealing gasket 38 to deform when the bolt fastener 37 and the housing component 35 press against it, thereby improving the tightness of the fit between the sealing gasket 38 and the bolt fastener 37, and also improving the tightness of the fit between the sealing gasket 38 and the housing component 35, ultimately enhancing the sealing performance of the sealing gasket 38.

[0038] In one embodiment, in a plane perpendicular to the centerline of the sealing hole 381, the orthographic projection of the air cavity 386 on this plane at least partially coincides with the orthographic projection of the first sealing portion 383 on the same plane, and the orthographic projection of the air cavity 386 on this plane at least partially coincides with the orthographic projection of the second sealing portion 385 on the same plane. This arrangement allows the air cavity 386, which coincides with the first sealing portion 383, to facilitate deformation of the first sealing portion 383, thereby improving the tightness of the fit between the first sealing portion 383 and the bolt fastener 37. Similarly, the air cavity 386, which coincides with the second sealing portion 385, allows the second sealing portion 385 to deform, thereby improving the tightness of the fit between the second sealing portion 385 and the bolt fastener 37. This arrangement improves the sealing performance of the sealing gasket 38.

[0039] In this embodiment, the central projection of the protrusion 3811 and the central projection of the air cavity 386 at least partially coincide along the radial direction of the sealing hole 381. This arrangement allows the air cavity 386, which coincides with the protrusion 3811, to deform, thereby improving the tightness of the fit between the protrusion 3811 and the bolt fastener 37, and ultimately enhancing the sealing performance of the sealing gasket 38.

[0040] It should be noted that this application does not restrict the location of the air cavity 386 within the sealing gasket 38.

[0041] In one embodiment, along the centerline of the sealing hole 381, the distance between the protrusion 3811 and the first abutting wall 382 is less than or equal to the distance between the protrusion 3811 and the second abutting wall 384. This arrangement allows the protrusion 3811 to be closer to the first abutting wall 382 after assembly, thereby improving the sealing performance between the sealing gasket 38 and the first abutting wall 382.

[0042] In one embodiment, the first sealing part 383 is located at the edge of the first abutting wall 382 near the sealing hole 381, and the edge of the first sealing part 383 is connected to one of the openings of the sealing hole 381. This arrangement allows the first sealing part 383 to abut against both the abutting mating surface 371 and the outer peripheral wall of the bolt fastener 37, thereby improving the sealing performance of the sealing gasket 38.

[0043] like Figure 4 , Figure 6 and Figure 7 As shown, in one embodiment, the housing component 35 is the cylinder head cover 211 of the engine 200, and the bolt fastener 37 is used to connect the cylinder head cover 211 and the cylinder head 212. With this configuration, a sealed connection between the cylinder head cover 211 and the cylinder head 212 can be achieved by the bolt fastener 37.

[0044] Alternatively, housing component 35 may be the cylinder head 212 of engine 200. The cylinder head 212 has a timing chamber 2121 for accommodating the timing mechanism 25 and a damping bolt hole 2122 connecting the timing chamber 2121 to the outside. Bolts 37 and sealing washers 38 are used to seal the damping bolt hole 2122. This configuration improves the sealing performance of the damping bolt hole 2122 through the bolts 37 and sealing washers 38, thereby improving the sealing performance of the timing chamber 2121. This prevents external dust and other impurities from entering the timing chamber 2121 through the damping bolt hole 2122 and damaging the timing mechanism 25, thus extending the service life of the timing mechanism 25.

[0045] Alternatively, housing component 35 can be the oil pan 215 of engine 200, with an oil drain hole 2151 provided in the oil pan 215. Bolts and fasteners 37 pass through the sealing washer 38 and the oil drain hole 2151. This arrangement improves the sealing performance of the oil drain hole 2151 through the bolts and fasteners 37 and the sealing washer 38, thereby enhancing the sealing performance of the oil pan 215 and preventing oil leakage, thus improving the driving safety of the motorcycle 100.

[0046] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. An engine, characterized in that, The engine includes a housing component, bolts, fasteners, and a sealing washer. The bolts pass through the sealing washer and are connected to the housing component. The sealing washer includes a sealing hole through which the bolts pass. The inner wall of the sealing hole has a protrusion that can elastically deform, and the protrusion makes the inner diameter of the sealing hole smaller than the diameter of the bolts.

2. The engine according to claim 1, characterized in that, The protrusion is annular, and its inner diameter is smaller than that of the bolt fastener. The inner circumferential wall of the protrusion is attached to and abuts against the outer circumference of the bolt fastener to form a sealing assembly. The sealing assembly can seal and separate the two sides of the sealing assembly along the center line of the sealing hole.

3. The engine according to claim 1 or 2, characterized in that, The sealing gasket includes a first abutting wall and a second abutting wall, which are located on both sides of the sealing gasket along the center line of the sealing hole. The first abutting wall is provided with a first sealing part, and the bolt fastener is provided with an abutting mating surface. The first sealing part abuts against the abutting mating surface along the center line of the sealing hole, forming a first abutting joint with an annular structure. The first abutting joint can seal and isolate the inner and outer areas of the first abutting joint.

4. The engine according to claim 3, characterized in that, The second abutting wall is provided with a second sealing part, which abuts against the housing component along the center line of the sealing hole and forms a second abutting assembly with an annular structure. The second abutting assembly can seal and isolate the inner and outer areas of the second abutting assembly.

5. The engine according to claim 4, characterized in that, Along the radial direction of the sealing hole, the first sealing portion is closer to the center line of the sealing hole than the second sealing portion.

6. The engine according to claim 4, characterized in that, The sealing gasket has an air cavity located between the first abutment wall and the second abutment wall.

7. The engine according to claim 6, characterized in that, In a plane perpendicular to the centerline of the sealing hole, the orthographic projection of the air cavity at least partially coincides with the orthographic projection of the first sealing part, and the orthographic projection of the air cavity at least partially coincides with the orthographic projection of the second sealing part; Along the radial direction of the sealing hole, the central projection of the protrusion at least partially coincides with the central projection of the air cavity.

8. The engine according to claim 3, characterized in that, Along the centerline of the sealing hole, the distance between the protrusion and the first abutting wall is less than or equal to the distance between the protrusion and the second abutting wall.

9. The engine according to claim 3, characterized in that, The first sealing part is located at the edge of the first abutting wall near the sealing hole, and the edge of the first sealing part is connected to one of the openings of the sealing hole.

10. A motorcycle, comprising: Frame; A body panel that at least partially covers the vehicle frame; A walking system, at least partially located below the vehicle frame; Its features are, The motorcycle further includes an engine as described in any one of claims 1 to 9, the engine being supported by the frame and connected to the drive system in a transmission manner; the engine includes an oil pan, a crankcase, a cylinder block, a cylinder head, and a cylinder head cover arranged in sequence. The housing component is the cylinder head cover, and the bolt fasteners are used to connect the cylinder head cover and the cylinder head; Alternatively, the housing component may be the cylinder head, and the engine may further include a timing mechanism. The cylinder head may have a timing chamber for accommodating the timing mechanism and a shock-absorbing bolt hole for communicating with the timing chamber and the outside. The bolt fastener and the sealing washer may be used to seal the shock-absorbing bolt hole. Alternatively, the housing component may be the oil pan, and the oil pan may have a drain hole. The bolt fastener and the sealing washer may be used to seal the drain hole.

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