Three-wheeled motorcycle

Abstract

The utility model discloses a three -wheel motorcycle, including frame and install in the engine of frame, still include the bottom plate of engine front side installation in the top of frame and set up the airway under the bottom plate, the airway has the air intake of to the front and the air outlet to the engine, the three -wheel motorcycle of this scheme sets up the airway under the bottom plate, makes the cooling of engine not to be influenced by the front end covering piece of vehicle, can increase the effective ventilation of engine, promotes the heat dissipation effect of engine, and can make the use performance of engine be promoted to the airway of setting up under the bottom plate can also optimize the driving experience feeling.

Description

Technical Field

[0001] This utility model relates to the field of light motor vehicles, specifically to a three-wheeled motorcycle. Background Technology

[0002] Three-wheeled motorcycles are widely used due to their advantages such as small engine displacement, compact size, and good maneuverability. In existing technology, the engine of a three-wheeled motorcycle is generally installed below the driver's seat, with ventilation ducts above the footwell floor for cooling the engine during driving and improving its performance. However, in actual use, it has been found that due to space limitations, the air inlets of the ventilation ducts are relatively small, resulting in limited effective ventilation and poor engine cooling. Furthermore, the raised space on the floor for ventilation also affects the riding experience.

[0003] Therefore, it is necessary to improve the engine cooling structure of three-wheeled motorcycles to optimize the cooling capacity of the engine, improve engine performance, and enhance the driving experience. Utility Model Content

[0004] In view of this, the purpose of this utility model is to overcome the defects in the prior art and provide a three-wheeled motorcycle that can optimize the heat dissipation structure to improve the heat dissipation capacity of the engine, improve the engine's performance, and optimize the driving experience.

[0005] The present invention relates to a three-wheeled motorcycle, comprising a frame and a base plate mounted on the frame. A ventilation duct for cooling the engine is formed below the base plate on the front side of the engine. The ventilation duct has a forward-facing air inlet and an air outlet facing the engine.

[0006] Furthermore, the ventilation duct has a guide surface that slopes upward from front to back, and the airflow entering the ventilation duct from the air inlet is guided to the air outlet by the guide surface.

[0007] Furthermore, the guide surface causes the cross-sectional area of ​​the ventilation duct to gradually decrease from front to back.

[0008] Furthermore, the lower edge of the air inlet is at a height similar to the lower edge of the engine.

[0009] Furthermore, the lateral edge of the air inlet on one side and / or both sides approaches the longitudinal beam of the vehicle frame on the corresponding side.

[0010] Furthermore, the air outlet is located near the cylinder head of the engine.

[0011] Furthermore, the air outlet direction forms an angle α with the central axis of the cylinder head, where 115°≤α≤135°.

[0012] Furthermore, the ventilation duct is a pyramidal shape with a larger front end and a smaller rear end.

[0013] Furthermore, the ventilation duct is a four-sided pyramid shape with a larger front end and a smaller rear end. The ventilation duct is formed by a bottom plate, a bottom guard plate, and a left end plate and a right end plate fixed to the bottom guard plate. The left end plate and the right end plate are also fixed to the vehicle frame.

[0014] Furthermore, the bottom guard plate is inclined upward from front to back, and the top surface of the bottom guard plate forms the flow guide surface; at least one of the left end plate and the right end plate is inclined inward from front to back.

[0015] The beneficial effects of this utility model are as follows: The three-wheeled motorcycle disclosed in this utility model, by setting a ventilation duct under the bottom plate, makes the engine cooling unaffected by the front cover of the vehicle, which can increase the effective ventilation volume to the engine, improve the engine heat dissipation effect, and thus improve the performance of the engine; at the same time, the ventilation duct set under the bottom plate can also optimize the riding experience. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This utility model Figure 1 Front view structural diagram;

[0019] Figure 3 This utility model Figure 1 A top-view structural diagram;

[0020] Figure 4 This utility model Figure 1 A schematic diagram of the side view structure;

[0021] Figure 5 This utility model Figure 1 A schematic diagram of the structure viewed from below;

[0022] Figure 6 This utility model Figure 3 A schematic diagram of the AA-direction structure;

[0023] Figure 7 This utility model Figure 6 A schematic diagram of the structure at point A;

[0024] Figure 8 This is a schematic diagram of the structure of the air guide plate of this utility model.

[0025] Reference numerals: frame 001, engine 002, floor 003, box seat 004, air inlet 1, air outlet 2, air guide surface 3, bottom guard plate 51, left end plate 52, right end plate 53. Detailed Implementation

[0026] Figures 1-8 The diagram shows the structure of this utility model. The three-wheeled motorcycle in this embodiment includes a frame 001 and a base plate 003 mounted on the frame 001. It also includes an engine 002 mounted on the frame 001. A ventilation duct for cooling the engine 002 is formed below the base plate 003, located in front of the engine 002. The ventilation duct has a forward-facing air inlet 1 and an air outlet 2 facing the engine 002. Of course, this three-wheeled motorcycle also includes existing components such as wheels and electrical equipment. In the length direction of the three-wheeled motorcycle, the front is the front and the rear is the rear, which will not be described further here. In this design, the base plate 003 covers the footrest area of ​​the three-wheeled motorcycle, the bottom of the seat 004 of the three-wheeled motorcycle's driver and passenger seats, and the rear area of ​​the seat 004. The engine 002 is located at the bottom of the seat 004, and the ventilation duct is located in front of the engine 002, below the base plate 003 of the footrest area of ​​the three-wheeled motorcycle. This design, through the ventilation duct located below the base plate 003, ensures that the cooling of the engine 002 is not affected by the front cover of the vehicle, thereby increasing the effective ventilation volume of the engine 002, improving the heat dissipation effect of the engine 002, and thus improving the performance of the engine 002. In this solution, an additional ventilation duct located below the existing ventilation duct above the base plate 003 can be added to improve the heat dissipation effectiveness of the engine 002. Alternatively, this solution can replace the ventilation duct above the base plate 003 and only set up a ventilation duct below the base plate 003, making the area above the base plate 003 of the tricycle's footwell flat and free of obstacles that would affect driving or access to the driver's cabin. This would also improve the heat dissipation effectiveness of the engine 002 and enhance its usability. It should be understood that the engine 002 should have heat dissipation holes or openings around it to allow gas to escape, so as to keep the heated airflow away from the engine 002 after cooling. This will not be elaborated further here.

[0027] like Figure 1 , Figure 3 , Figure 4 and Figure 6 As shown, this solution only sets up a ventilation duct located below the bottom plate 003. The structure is simple and highly applicable. It can improve the driver's operating space and improve the ease of operation. In addition, the bottom plate 003 of the footrest area of ​​the three-wheeled motorcycle is flat, which can also facilitate the driver to get in and out of the cab, making the use of the vehicle more convenient.

[0028] In this embodiment, an engine mounting port is provided on the base plate 003. The engine mounting port is located at the bottom of the seat 004 of the three-wheeled motorcycle. The cylinder head of the engine 002 passes through the engine mounting port seat 004 and is located approximately in the middle of the transverse direction of the seat 004, which is the width direction of the three-wheeled motorcycle. Both ends of the seat 004 are respectively sealed by sealing plates with heat dissipation holes. The air outlet 2 is close to the cylinder head of the engine 002, so that part of the airflow led from the ventilation duct to the cylinder head for cooling the engine 002 can escape to the outside environment through the sealing plates with heat dissipation holes, and part can escape to the outside environment through the opening of the base plate 003 that houses the engine 002. In the driving state, it can effectively cool the engine 002 and also suppress the rise of the ambient temperature inside the seat 004, so that the engine 002 can remain in a relatively low temperature environment and maintain its performance.

[0029] In this embodiment, as Figure 7 As shown, cooling fins are present on both the outer side of the cylinder head and the outer side of the cylinder cover. The air outlet 2 is positioned corresponding to the cylinder head. The ventilation duct has a guide surface 3 that slopes upwards from front to back. The air inlet 1 and air outlet 2 are respectively located at the front and rear ends of the guide surface 3. Airflow entering the ventilation duct from the air inlet 1 is guided to the air outlet 2 by the guide surface 3. The guide surface 3 allows airflow to converge at a predetermined location on the engine 002, thereby improving the engine 002's cooling efficiency.

[0030] In this embodiment, the air outlet 2 has an angle α with the central axis of the cylinder head, 115°≤α≤135°; in this scheme, α is 125°; so that the airflow used to cool the engine 002 is also guided to diffuse from bottom to top, thereby improving the cooling efficiency of the engine 002, reducing the temperature of the hot area of ​​the engine 002, and improving the quality of the engine 002.

[0031] In this embodiment, the cross-sectional area of ​​the ventilation duct gradually decreases from front to back. Specifically, the ventilation duct is formed between the guide surface and the base plate, with the guide surface 3 inclined so that the cross-sectional area of ​​the ventilation duct gradually decreases from front to back. Designing the ventilation duct with a structure of a large air inlet 1 and a small air outlet 2 can better improve the air gathering effect, thereby improving the heat dissipation effectiveness of the engine 002 and improving the performance of the engine 002.

[0032] In this embodiment, as Figure 4 , Figure 6 and Figure 7 As shown, the lower edge of the air inlet 1 is at a height close to the lower edge of the engine 002. In this design, the entire ventilation duct does not exceed the lower edge of the air inlet 1, so as to maximize the air intake of the ventilation duct and improve the air-cooling heat dissipation of the engine 002 without affecting driving.

[0033] In this embodiment, one or both lateral edges of the air inlet approach the corresponding longitudinal beam of the vehicle frame. For example... Figure 5 As shown, in this design, the air inlet 1 at the left end of the horizontal direction approaches the left longitudinal beam of the frame 001, while the air inlet 1 at the right end of the horizontal direction does not extend outward to avoid vehicle components. The meaning of "or / and" is that in actual application, either end of the air inlet 1 can approach the longitudinal beam of the frame 001 on the corresponding side, or both ends of the air inlet 1 can approach the longitudinal beam of the frame 001 on the corresponding side, as long as the usage requirements are met. This will not be elaborated further here.

[0034] In this embodiment, the ventilation duct is a pyramidal shape, wider at the front end and narrower at the rear end. This facilitates structural design, and the bottom edge of the ventilation duct is parallel to the horizontal plane, which increases the ventilation volume to meet the cooling requirements of the engine 002.

[0035] In this embodiment, as Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the ventilation duct is a four-sided pyramid shape, wider at the front and narrower at the rear. The ventilation duct is formed by a base plate, a bottom guard plate, and left and right end plates fixed to the bottom guard plate. The frame 001 has a mounting beam located below the base plate 003. The mounting beam has lugs for mounting the left end plate 52 and the right end plate 53. The bottom guard plate is fixed to the frame via the left and right end plates, with the tops of the left end plate 52 and the right end plate 53 respectively approaching the base plate 003.

[0036] The left end plate 52 and the right end plate 53 are respectively located on the lateral sides of the bottom guard plate 51. The bottom guard plate 51 is inclined upward from front to back, and the top surface of the bottom guard plate 51 is the air guide surface 3. At least one of the left end plate and the right end plate is inclined inward from front to back. The "inward" refers to the direction in the lateral direction towards the middle of the three-wheeled motorcycle. In this scheme, the left end plate 52 is inclined inward from front to back, and the right end plate 53 is set parallel to the longitudinal direction from front to back, so that the ventilation channel formed by the air guide plate and the bottom plate 003 is a four-sided pyramid shape with a large front end and a small rear end.

[0037] The air inlet of the ventilation duct faces forward, so that it faces the direction of airflow when the vehicle is in motion. The air outlet of the ventilation duct faces upward, and the airflow passing through the ventilation duct and the guide surface is guided to the cylinder head of the engine. The upward-facing air outlet is formed by the top edge of the bottom guard plate, the top edge of the left end plate, the top edge of the right end plate, and the edge corresponding to the engine mounting port. This further enhances the airflow guidance capability, prevents the airflow used for engine cooling from dissipating downward through the engine mounting port too early, increases the effective ventilation volume passing through the engine, and meets the engine heat dissipation requirements.

[0038] In this embodiment, as Figure 8 As shown, the bottom protective plate 51, the left end plate 52 and the right end plate 53 are integrally formed. The left end plate 52 and the right end plate 53 are respectively formed by bending inward from the lateral end of the bottom protective plate 51. The structure is simple and easy to manufacture. The integrally formed bottom protective plate 51, the left end plate 52 and the right end plate 53 also have reinforcing ribs for structural reinforcement, which improves the reliability of use.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A three-wheeled motorcycle, characterized in that: The vehicle includes a frame and a base plate mounted on the frame. A ventilation duct for cooling the engine is formed below the base plate on the front side of the engine. The ventilation duct has a forward-facing air inlet and an air outlet facing the engine.

2. The three-wheeled motorcycle according to claim 1, characterized in that: The ventilation duct has a guide surface that slopes upward from front to back, and the airflow entering the ventilation duct from the air inlet is guided to the air outlet by the guide surface.

3. The three-wheeled motorcycle according to claim 2, characterized in that: The guide surface causes the cross-sectional area of ​​the ventilation duct to gradually decrease from front to back.

4. The three-wheeled motorcycle according to claim 1, characterized in that: The lower edge of the air inlet is at a height similar to the lower edge of the engine.

5. The three-wheeled motorcycle according to claim 1, characterized in that: The lateral edge of the air inlet is close to the longitudinal beam of the frame on the corresponding side.

6. The three-wheeled motorcycle according to claim 1, characterized in that: The air outlet is located near the engine cylinder head.

7. The three-wheeled motorcycle according to claim 6, characterized in that: The air outlet direction forms an angle α with the central axis of the cylinder head, where 115°≤α≤135°.

8. The three-wheeled motorcycle according to claim 1, characterized in that: The ventilation duct is a pyramidal shape with a larger front end and a smaller rear end.

9. The three-wheeled motorcycle according to claim 8, characterized in that: The ventilation duct is a four-sided pyramid shape with a larger front end and a smaller rear end. The ventilation duct is formed by a bottom plate, a bottom guard plate, and a left end plate and a right end plate fixed to the bottom guard plate. The left end plate and the right end plate are also fixed to the vehicle frame.

10. The three-wheeled motorcycle according to claim 9, characterized in that: The bottom guard plate is inclined upward from front to back, and the top surface of the bottom guard plate forms a guide surface; at least one of the left end plate and the right end plate is inclined inward from front to back.

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