Air filter and motorcycle

Abstract

The utility model provides an air filter and a motorcycle. The air filter comprises an air filter shell cover, an air filter shell fixedly connected with the air filter shell cover, and an air filter element combination installed between the combination faces of the air filter shell and the air filter shell cover, and the air filter element combination is fixed to the air filter shell through screws. A concave receding part is arranged on the inner side of the end face of the air filter shell cover and located over the screw, and the distance between the concave receding part and the screw is smaller than the depth of the portion, screwed into a threaded hole in the air filter shell, of the screw. According to the structure, the possibility that the screw falls off and enters an engine cylinder after the screw is loosened in the running process of a vehicle can be effectively prevented, normal running of an engine is guaranteed, an existing structure on the air filter shell cover is reasonably utilized, the number of added new structures is reduced, the complexity of manufacturing and machining is reduced, and the cost is reduced. And meanwhile, the die processing difficulty is reduced, so that the production and manufacturing cost is reduced.

Description

Technical Field

[0001] The utility model relates to a motorcycle component and the technical field of motorcycles, in particular to an air filter and a motorcycle. Background Art

[0002] The air filter in a motorcycle provides clean air and fuel for the engine. However, the air filter is generally a split structure, and the air filter element combination is used to purify the air. The element combination is generally fixed to the joint surface of the air filter cover and the shell by screws. However, the motorcycle is often unstable during operation, and the engine itself vibrates greatly. The shaking makes the screws that fix the air filter element easy to loosen and fall off. The screws are located at the exhaust end. When the screws fall off, it is easy to enter the cylinder and cause damage to the engine. Therefore, the current air filter generally involves an anti-falling structure (even if the screws fall off, they will appear in a certain space and will not fall into the engine cylinder); but most of the anti-falling structures currently used are relatively complex in shape, occupy a large space, and increase the production cost. Looking forward to a structure with a simple structure that does not increase the cost. Summary of the invention

[0003] The utility model aims to provide an air filter with a split structure, which can simplify the structure and reduce the cost as much as possible while achieving the function of preventing the internal fasteners of the air filter from falling off and entering the engine cylinder body.

[0004] The utility model provides an air filter, including an air filter cover and an air filter housing fixedly connected to the air filter cover, and an air filter element assembly installed between the joint surface of the air filter housing and the air filter cover, wherein the air filter element assembly is fixed to the air filter housing by screws, and an inwardly recessed paving portion is provided on the inner side of the end surface of the air filter cover and directly above the screw, and the distance between the inwardly recessed paving portion and the screw is less than the depth of the screw screwed into the threaded hole in the air filter housing. The inwardly recessed paving portion in the structure will not interfere with the screw, and can also prevent the screw from jumping out of the screw hole after being loosened, fully ensuring that the screw will not enter the cylinder after being loosened and may cause damage to the engine; and the structure is simple, and can be realized by making small changes on the basis of the original structure, and the manufacturing cost is low.

[0005] Further: the air filter element assembly has a bracket, and a flange is provided on the edge of the bracket. The bracket can support the air filter element and also fix the air filter element on the air filter. The flange mainly refers to the thickness direction of the air filter element bracket, and is also conveniently provided for matching with the end face of the air filter housing.

[0006] Further: the end surface of the air filter housing is provided with a lower groove, the lower end of the bracket is provided with a convex strip, and the convex strip is fixed by the screw after matching with the lower groove. This structure is convenient for installation and positioning by matching the lower groove and the convex strip, and has a sealing function to prevent gas blowby.

[0007] Further: an annular limiting arc with an opening surrounding the screw is arranged on the side of the screw close to the bracket, and the distance of the opening is smaller than the diameter of the screw cap. This structure is mainly used to prevent the screw from slipping out of the opening of the annular limiting arc after being loosened, and more effectively prevents the possibility of the screw falling off and entering the cylinder.

[0008] Further: a protruding rib around the edge of the housing is arranged on the outer side of the groove on the surface of the air filter housing, an upper inner groove matching with the protruding rib is arranged on the flange of the air filter housing cover, and the screw hole on the flange of the air filter housing cover is arranged on the outer side of the upper inner groove. This structure can improve the installation between the air filter housing cover and the housing and realize the mutual positioning, and can effectively realize the sealing.

[0009] Further: the bolt holes for the air filter housing and the air filter housing cover to cooperate are arranged on the outside of the protruding ribs. The structure is simple, compact and light.

[0010] Further: the concave relief portion cannot completely cover the screw cap when viewed from above. This structure effectively reduces the thickness of the air filter housing and can prevent the screw from entering the cylinder after falling off, ensuring that the screw cannot come out of the screw hole after falling off.

[0011] Further: two air intake passages are arranged below the air filter housing to improve air intake efficiency and ensure sufficient air intake for the engine.

[0012] Further, the bolt holes are protrudingly arranged on the peripheral edges of the air filter housing cover and the air filter housing. The screw holes are arranged on the edges to ensure the fixed sealing of the air filter housing cover and the housing, and the structure can be simple.

[0013] The utility model also provides a motorcycle, on which an air filter connected to an engine is installed. The air filter described above has the following advantages: the structure is easy to install and can fully prevent the possibility of fixing screws falling off and entering the engine cylinder; at the same time, the production cost of the air filter can be reduced.

[0014] Beneficial effects:

[0015] The screws designed to fix the air filter element in the utility model are restricted, which effectively prevents the possibility of the screws falling off and entering the engine cylinder after being loosened during vehicle operation, and can ensure the normal air intake of the engine and the normal operation of the engine. The existing structure on the air filter housing cover is reasonably utilized, the addition of new structures is reduced, and the utilization rate of the structure is improved. The original structure is simplified, and the complexity of manufacturing and processing is reduced. At the same time, the difficulty of mold processing is reduced, thereby reducing the cost of production and manufacturing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a schematic diagram of the appearance and structure of the air filter;

[0017] Figure 2 It is a schematic diagram of the structure from above without the air filter housing cover;

[0018] Figure 3 It is a schematic diagram of the transverse cross-sectional structure of the air filter;

[0019] Figure 4 for Figure 3 A partial enlarged view DETAILED DESCRIPTION

[0020] The utility model provides an air filter, the air filter comprises an air filter housing cover 1 and an air filter housing 2 fixedly connected thereto, air intakes 7 are respectively arranged on the upper and lower sides of the air filter housing 2, an air filter element assembly 10 is arranged between the air filter housing cover 1 and the air filter housing 2, a plurality of air discharge pipes 8 are arranged from the air intake duct 7 through the air filter element assembly to the rear of the air filter and below the air filter housing; the side of the air intake duct reaching the air filter is the unclean air side 9, and the side after passing through the air filter element is the clean air side. The air filter element assembly 10 is installed between the joint surface of the air filter housing 2 and the air filter housing cover 1. The air filter element assembly is fixed to the air filter housing 2 by screws 6, and a concave clearance portion 42 is provided on the inner side of the end surface of the air filter housing cover and directly above the screws, and the distance between the concave clearance portion 42 and the top of the screw 6 is less than the depth of the screw 6 screwed into the threaded hole 21 in the air filter housing 2. The concave clearance portion in this structure will not interfere with the screw, and can also prevent the screw from jumping out of the screw hole after being loosened, fully ensuring that the screw will enter the cylinder after being loosened and may cause damage to the engine; and the structure is simple, and can be realized by making small changes on the basis of the original structure, and the manufacturing cost is low.

[0021] In this embodiment: the air filter element assembly has a bracket 3, and a vertical flange 5 is arranged on the edge of the bracket. The bracket can support the air filter element and also fix the air filter element on the air filter. The vertical flange mainly refers to the thickness direction of the air filter element bracket, and is also conveniently arranged to cooperate with the end face of the air filter housing.

[0022] In this embodiment: the end surface of the air filter housing 2 is provided with a lower groove 22, and the lower end of the bracket 3 is provided with a convex strip 51, and the convex strip 51 cooperates with the lower groove 22 and is fixed by the screw 6. This structure is convenient for installation and positioning by providing the lower groove and the convex strip to cooperate and has a sealing function to prevent blowby.

[0023] In this embodiment, an annular limiting arc 52 is provided around the screw 6 and has an opening near the bracket 3, and the opening distance is smaller than the diameter of the screw cap. This structure is mainly used to prevent the screw from slipping out of the opening of the annular limiting arc after being loosened, and more effectively prevents the screw from falling off and entering the cylinder.

[0024] In this embodiment: a protruding rib 23 around the edge of the housing is arranged on the surface of the air filter housing 2 at the outside of the lower groove, an upper inner groove 41 matching with the protruding rib is arranged on the flange 4 of the air filter housing cover, and the screw hole on the flange 4 of the air filter housing cover is arranged outside the upper inner groove 41. This structure can improve the installation between the air filter housing cover and the housing and realize the mutual positioning, and can effectively realize the sealing.

[0025] In this embodiment, the bolt holes for the air filter housing 2 and the air filter cover 1 are arranged on the outside of the protruding rib 23. The structure is simple, compact and light.

[0026] In this embodiment, the recessed clearance portion 42 cannot completely cover the screw cap when viewed from above. This structure effectively reduces the thickness of the air filter housing and can prevent the screw from entering the cylinder after falling off, ensuring that the screw cannot come out of the screw hole after falling off.

[0027] In this embodiment, two air intake passages 7 are arranged below the air filter housing to improve air intake efficiency and ensure sufficient air intake for the engine.

[0028] In this embodiment, the bolt holes are protrudingly arranged on the edges of the air filter housing cover 1 and the air filter housing 2. The bolt holes are arranged on the edges to ensure the fixed sealing of the air filter housing cover and the housing, and a simple structure can be achieved.

[0029] The utility model also provides a motorcycle, on which an air filter connected to an engine is installed, and the air filter is the air filter described above; the structure is easy to install and can fully prevent the possibility of fixing screws falling off and entering the engine cylinder; at the same time, it can reduce the production cost of the air filter.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An air filter, comprising an air filter housing cover and an air filter shell fixedly connected to the air filter housing cover, and an air filter element assembly installed between the joint surface of the air filter shell and the air filter housing cover, wherein the air filter element assembly is fixed to the air filter shell by screws, characterized in that: An inwardly concave easing portion is arranged on the inner side of the end surface of the air filter housing cover and directly above the screw, and the distance between the inwardly concave easing portion and the screw is less than the depth of the screw being screwed into the threaded hole in the air filter housing.

2. The air filter according to claim 1, characterized in that: The air filter element assembly comprises a bracket, and a flange is arranged on the edge of the bracket.

3. The air filter according to claim 2, characterized in that: The end surface of the air filter housing is provided with a lower groove, and the lower end of the bracket is provided with a convex strip, and the convex strip is fixed by the screw after being matched with the lower groove.

4. The air filter according to claim 3, characterized in that: An annular limiting arc surrounding the screw and having an opening is arranged on the side of the screw close to the bracket, and the distance of the opening is smaller than the diameter of the screw cap.

5. The air filter according to claim 1, characterized in that: A protruding rib around the edge of the air filter housing is arranged on the outside of the lower groove on the surface of the air filter housing, an upper inner groove matching the protruding rib is arranged on the flange of the air filter housing cover, and the bolt holes on the flange of the air filter housing cover are arranged on the outside of the upper inner groove.

6. The air filter according to claim 3, characterized in that: The bolt holes for the air filter housing to cooperate with the air filter cover are arranged on the outside of the protruding ribs.

7. The air filter according to claim 4, characterized in that: The inwardly concave relief portion cannot completely cover the screw cap when viewed from above.

8. The air filter according to claim 1, characterized in that: Two air intake passages are arranged below the air filter housing.

9. The air filter according to any one of claims 5-6, characterized in that: The bolt holes are protrudingly arranged on the peripheral edges of the air filter housing cover and the air filter shell.

10. A motorcycle, on which an air filter connected to the engine is installed, characterized in that: The air filter is an air filter as claimed in any one of claims 1 to 9.

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