CN218844423U

CN218844423U - Wind-guiding structure, air-cooled engine and motorcycle

Info

Publication number: CN218844423U
Application number: CN202222976231.9U
Authority: CN
Inventors: 王明
Original assignee: Jiangmen Dachangjiang Group Co Ltd
Current assignee: Jiangmen Dachangjiang Group Co Ltd
Priority date: 2022-11-08
Filing date: 2022-11-08
Publication date: 2023-04-11
Anticipated expiration: 2032-11-08

Abstract

The utility model relates to a motorcycle technical field discloses a wind-guiding structure, air-cooled engine and motorcycle, and wind-guiding structure includes the fan casing, goes up the wind-guiding cover and wind-guiding cover down, go up the wind-guiding cover with the surface of engine cylinder head and cylinder body is located to the common cover of wind-guiding cover down, the outside that cooling fan was located to the fan casing just the fan casing is equipped with the air intake, the wind-guiding cover is equipped with the air outlet down, the fan casing go up the wind-guiding cover and reach the wind-guiding cover forms the cooling air passageway jointly down, the volume ratio of wind-guiding cover down go up the small of wind-guiding cover. The utility model discloses a lower wind scooper of wind-guiding structure does not produce with spare parts such as box, cradle and interferes, avoids down the wind scooper assembly unsmooth, avoids colliding with the cradle and causes the cradle damaged, can promote wind-guiding structure's assembly convenience effectively.

Description

Wind-guiding structure, air-cooled engine and motorcycle

Technical Field

The utility model relates to a motorcycle technical field especially relates to a wind-guiding structure, air-cooled engine and motorcycle.

Background

The motorcycle engine includes air cooled engine and water cooled engine, the air cooled engine is engine with air as cooling medium, some radiating fins are cast on the outer wall of the cylinder and cylinder cover of the engine, and the air is blown over the radiating fins with high speed by cooling fan to take away the heat produced by the engine and cool the engine. The air-cooled engine has the advantages of simple structure, light weight, convenient maintenance and use, strong adaptability, quick start and the like, thereby being widely adopted by motorcycles.

In the existing motorcycle, an upper wind scooper and a lower wind scooper are generally installed outside an air-cooled engine as a cooling device, a closed area formed by the upper wind scooper and the lower wind scooper covers the engine, and a cooling fan is matched to forcibly cool the engine. However, the air guide structure of the existing cooling device divides the engine cylinder head into two parts with approximately equal upper and lower volumes, and due to the fact that the occupied space of the lower air guide cover is large, under the condition that the bottom space of the fan cover is small, the space between the lower air guide cover and the lower box body is too small when the lower air guide cover is assembled and disassembled, and the lower air guide cover is not smoothly assembled; on the other hand, if the space below the lower wind scooper is enlarged for the assembling property, the arrangement is difficult, and the size of the engine is increased, which is not favorable for the miniaturization of the engine.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a wind-guiding structure under the condition that does not increase engine size, can effectively solve the technical problem that the wind scooper assembly of engine is not smooth and easy, realizes that the engine is miniaturized.

In order to realize the above-mentioned purpose, the utility model provides a wind-guiding structure, it includes the fan casing, goes up the wind scooper and wind scooper down, go up the wind scooper with the surface of engine cylinder head and cylinder body is located to the common cover of wind scooper down, the outside that cooling fan was located to the fan casing just the fan casing is equipped with the air intake, the wind scooper is equipped with the air outlet down, the fan casing go up the wind scooper and reach the wind scooper forms the cooling air passageway down jointly, the volume ratio of wind scooper down go up the small of wind scooper.

Preferably, the volume ratio of the upper wind scooper to the lower wind scooper is 6-8.

Preferably, a boundary line between the upper wind scooper and the lower wind scooper includes a horizontal line and a step line.

Preferably, the air inlet is arranged on the outer side of the fan cover relative to the cooling fan, and the air outlet is arranged at the lower position of the lower air guide cover.

Preferably, the upper wind scooper and the lower wind scooper are fixed by screws.

An embodiment of the utility model provides an air cooled engine is still provided, including engine cylinder head, cooling fan and wind-guiding structure.

The embodiment of the utility model provides a still provide a motorcycle, include the air-cooled engine.

The embodiment of the utility model provides a wind-guiding structure compares with prior art, and its beneficial effect lies in:

the utility model discloses wind-guiding structure includes the fan casing, go up wind scooper and lower wind scooper, go up the wind scooper and cover jointly down and locate the surface of engine cylinder head and cylinder body and form the cooling air passageway between engine cylinder head and the cylinder body, the volume design of wind scooper becomes than the small of wind scooper down, and the volume of wind scooper reduces to the size that does not produce the interference with box and cradle down, wind scooper assembly is not smooth and easy under avoiding, under the condition that does not increase engine size, the wind scooper that can effectively solve the engine assembles technical problem that is not smooth and easy, realize the engine miniaturization.

Drawings

Fig. 1 is a schematic structural view of a wind guide structure of an air-cooled engine in the prior art;

FIG. 2 is a schematic rear view of FIG. 1;

fig. 3 is a first schematic structural diagram of an air guiding structure according to an embodiment of the present invention;

fig. 4 is a second schematic structural view of the air guiding structure according to the embodiment of the present invention;

in the figure, 1, an upper wind scooper; 11. an air inlet; 2. a lower wind scooper; 21. an air outlet; 3. a cooling fan; 4. an engine cylinder head; 5. and (4) a box body.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it is to be understood that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description of the present invention, it should be noted that the face facing the front of the human body is defined as "front face", and the face facing the back of the human body is defined as "back face". The terms "upper", "lower", "front", "rear", "inner", "outer", etc. used in the present invention are used for indicating the positional relationship based on the positional relationship shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices and elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

As shown in fig. 1-2, a conventional motorcycle generally has a fan cover, an upper wind scooper 1 and a lower wind scooper 2 as a wind guide structure mounted outside an air-cooled engine, and a closed area formed by the upper and lower wind scoopers covers the engine cylinder head 4 and the surface of the cylinder block, and forcibly cools the engine cylinder head 4 by a cooling fan 3 at the fan cover. However, in the air guide structure of the conventional cooling device, the engine cylinder head 4 is divided into two parts with approximately equal upper and lower volumes, but the lower air guide cover 2 occupies a large space, so that the lower air guide cover 2 interferes with the lower box body 5, the space is too small during assembly and disassembly, the assembly is not smooth, and even the engine cylinder head may collide with parts such as a cradle to cause damage.

The utility model discloses preferred embodiment's a wind-guiding structure reforms transform to original wind-guiding structure, as shown in fig. 3, wind-guiding structure includes the fan casing, goes up wind scooper 1 and wind scooper 2 down, the fan casing go up wind scooper 1 with wind scooper 2 covers jointly on the body of engine and with the engine between form the cooling air passageway down, the fan cowler is located cooling fan 3's the outside just the fan casing is equipped with air intake 11, wind scooper 2 is equipped with air outlet 21 down, wherein, wind scooper 2's volume ratio down go up wind scooper 1's small. It should be noted that the "volume" in the present invention refers to the volume of the upper wind scooper 1 or the lower wind scooper 2 and the inner space thereof.

Based on the technical problems, in the embodiment, the total volume of the air guide structure is kept unchanged, and the air guide structure is adapted to the size of the engine, the volume of the lower air guide cover 2 is designed to be smaller than that of the upper air guide cover 1, namely, the volume of the upper air guide cover 1 is increased, the volume of the lower air guide cover 2 is reduced to a size which can not interfere with a lower box body 5 or a cradle, the space between the lower air guide cover 2 and the box body 5 is increased, so that the assembly convenience of the air guide structure is improved, the unsmooth assembly of the lower air guide cover 2 is avoided, the damage of the cradle caused by collision with the cradle is avoided, and the technical problem that the assembly of the air guide cover of the engine is unsmooth can be effectively solved under the condition that the size of the engine is not increased.

Further, in the present embodiment, the volume ratio of the upper wind scooper 1 to the lower wind scooper is 6. Preferably, the volume ratio of the upper wind scooper 1 to the lower wind scooper is 2, the volume of the lower wind scooper accounts for 1/3 of the volume of the whole wind guiding structure, and in practical application, the lower wind scooper 2 can be accurately ensured to keep a proper assembling and disassembling space with parts such as the box body 5 and the cradle.

Furthermore, the boundary line between the upper wind scooper 1 and the lower wind scooper 2 includes a horizontal straight line, an inclined straight line or a smooth transition curve. As shown in fig. 3, in the present embodiment, the wind guiding structure may be divided into the upper wind guiding cover 1 and the lower wind guiding cover 2 according to a horizontal or inclined dividing manner, or the wind guiding structure and the lower wind guiding cover 2 are combined, and the shapes of the assembling surfaces of the upper wind guiding cover 1 and the lower wind guiding cover 2 are reasonably designed according to the actual distance between the lower wind guiding cover 2 and the box 5, so as to meet the assembling requirement.

Further, in this embodiment, the air inlet 11 is disposed on an outer side of the fan housing relative to the cooling fan 3, and the air outlet 21 is disposed at a lower position of the lower air guiding housing 2. The cooling air enters the air guide structure from the air inlet 11, flows in the air duct through the forced driving of the cooling fan 3 to take away the heat generated by the engine, and then flows out from the air outlet 21 to cool the engine.

Further, in order to improve the assembly convenience, in this embodiment, the upper wind scooper 1 and the lower wind scooper 2 are symmetrically provided with mounting lugs, and the upper wind scooper 1 and the lower wind scooper 2 are fixed by screwing screws or screws into the mounting lugs.

The embodiment of the utility model provides a forced air cooling engine is still provided, including engine cylinder head 4, cooling fan 3 and wind-guiding structure. The cooling fan 3 and the air guide structure constitute a forced cooling device for forcibly cooling the engine cylinder head 4. The air-cooled engine has a simpler structure because no additional auxiliary heat dissipation system is arranged, and the cooling heat dissipation system rarely breaks down.

The embodiment of the utility model provides a motorcycle is still provided, including the forced air cooling engine. The air-cooled engine is the preferred mode of the small-displacement motorcycle, the engine cost is low, and compared with the motorcycle with a water-cooled engine, the problem of high temperature cannot occur as long as the maintenance is proper.

The utility model discloses a working process does: inside cooling air got into this wind-guiding structure from the air intake of fan casing department, through cooling fan forced drive, the cooling air flowed in wind channel inside, took away the heat that the engine produced simultaneously, then flowed from the air outlet of wind scooper down, made the engine obtain quick cooling.

To sum up, the embodiment of the utility model provides a wind-guiding structure, the dismantlement space of wind scooper and box under the increase, spare parts such as wind scooper and box, cradle do not produce the interference down, avoid down the wind scooper assembly unsmooth, avoid causing the cradle damage with the cradle bump, can promote wind-guiding structure's assembly convenience effectively.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be considered as the protection scope of the present invention.

Claims

1. A wind-guiding structure which characterized in that: the cooling air device comprises a fan cover, an upper air guide cover and a lower air guide cover, wherein the upper air guide cover and the lower air guide cover are jointly arranged on the surfaces of an engine cylinder head and a cylinder body, the fan cover is arranged on the outer side of a cooling fan and provided with an air inlet, the lower air guide cover is provided with an air outlet, the fan cover, the upper air guide cover and the lower air guide cover jointly form a cooling air channel, and the volume of the lower air guide cover is smaller than that of the upper air guide cover.

2. The air guide structure according to claim 1, wherein: the volume ratio of the upper wind scooper to the lower wind scooper is 6-8.

3. The air guide structure according to claim 2, wherein: and the boundary line of the upper air guiding cover and the lower air guiding cover comprises a horizontal straight line and a step straight line.

4. The air guide structure according to claim 1, wherein: the air inlet is arranged on the outer side of the cooling fan, and the air outlet is arranged below the lower air guide cover.

5. The air guide structure according to claim 1, wherein: the upper wind scooper and the lower wind scooper are fixed through screws.

6. An air-cooled engine characterized by: the air guide structure comprises an engine cylinder head, a cooling fan and the air guide structure as claimed in any one of claims 1 to 5.

7. A motorcycle characterized in that: comprising the air-cooled engine of claim 6.