Symmetrical air filter

Abstract

The utility model discloses a symmetrical air filter, and relates to the filtering technology of intake air of a motorcycle engine, an air filter screen is embedded on a front slope surface, an air filter chamber and a rear slope surface chamber are arranged on the inner side of the symmetrical air filter, a front slope surface slot is arranged between the air filter chamber and a front slope surface breast board, and a rear slope surface slot is arranged between the rear slope surface chamber and the front slope surface breast board. And a rear slope surface slot is formed between the rear slope surface chamber and the rear slope surface breast board. The symmetrical air filter is connected with the air box in an inserted mode through the front slope face inserting groove and the rear slope face inserting groove. The air filter structure is mounted on symmetrical plastic parts at the front part of the motorcycle in an injection molding manner, so that the mounting space is saved. The design of an air inlet channel is omitted, a large-area air filter screen directly filters air to enable the air to enter, and the effect of an air filter is achieved. And structures such as clamping plate slots are designed on the symmetrical plastic parts, so that the symmetrical air filter can be mounted on the air box more simply and reliably.

Description

Technical Field

[0001] The utility model relates to a filtering technology for intake air of a motorcycle engine, in particular to a symmetrical air filter. Background Art

[0002] The air filter is a crucial component of a motorcycle's powertrain. It filters the air entering the engine, removing any impurities and dust suspended in the air. If unfiltered air is passed directly into the engine, dust and impurities will be drawn into the cylinders, accelerating wear on the piston assembly and cylinders, and shortening the engine's service life.

[0003] However, existing motorcycle air filters are too large. The filter element is located inside the filter, and the intake passage must be designed to be large enough to ensure the engine's air intake. Although there are patents currently working on miniaturizing filter designs, such as the "Motorcycle Air Filter" disclosed in Publication No. CN221547135U, although the filter size is reduced, it still requires air to pass through the air inlet to the filter element, without further reducing the size. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the present invention provides a symmetrical air filter. By injection-molding the air filter, the structure is mounted on a symmetrical plastic component at the front of the motorcycle. This saves installation space and eliminates the need for an air intake duct, allowing the large air filter to directly filter incoming air. This effectively acts as an air filter, resolving the issue of conventional air filters being too bulky to install on a vehicle. Furthermore, the design of a card slot and other structures within the symmetrical plastic component allows the symmetrical air filter to be more easily and reliably mounted on the air box.

[0005] The utility model achieves the above technical objectives through the following technical means.

[0006] A symmetrical air filter has an air filter embedded on the front slope surface. An air filter chamber and a rear slope chamber are provided on the inner side of the symmetrical air filter. A front slope slot is provided between the air filter chamber and the front slope baffle, and a rear slope slot is provided between the rear slope chamber and the rear slope baffle.

[0007] The symmetrical air filter is plugged into the air box through the front slope slot and the rear slope slot.

[0008] Furthermore, the air filter chamber and the rear slope chamber are respectively surrounded by an air filter chamber baffle and a rear slope chamber baffle, and the air filter chamber and the rear slope chamber are separated by a partition.

[0009] The air filter is arranged at the bottom of the air filter chamber.

[0010] Furthermore, the rear slope chamber is located on the inner side of the rear slope, the upper end of the front slope is the front upper slope, the upper end of the rear slope is the rear upper slope, the lower ends of the front slope and the rear slope are lower slopes, and except for the front upper slope, all slopes are provided with mounting waist holes.

[0011] There is an included angle between the front slope surface and the rear slope surface, and the included angle is an obtuse angle.

[0012] Furthermore, the air filter chamber baffle is provided outside the air filter chamber, and the interlayer between the air filter chamber baffle and the front slope baffle is the front slope slot.

[0013] The rear slope chamber railing is provided on the periphery of the rear slope chamber, and the interlayer between the rear slope chamber railing and the rear slope railing is the rear slope slot.

[0014] Furthermore, a latch tongue is provided on the inner side of the front upward slope surface, and an arc-shaped long upward slope plate is provided on the inner side of the rear upward slope surface.

[0015] Furthermore, an inclined partition plate is provided inside the air filter chamber to divide the air filter chamber into two parts.

[0016] Furthermore, the lower slope surface is V-shaped, supporting the front slope surface and the rear slope surface.

[0017] Furthermore, the symmetrical air filter is a thin-walled shell, and the symmetrical air filter is symmetrically plugged into both sides of the air box.

[0018] The utility model has the following gain effects:

[0019] By injection molding the air filter, the structure is mounted on symmetrical plastic parts at the front of the motorcycle, saving installation space and eliminating the need for an intake duct. This allows the large air filter surface to directly filter incoming air. This effectively acts as an air filter, significantly reducing the size of the air filter. This eliminates the need to plan a specific air filter installation location on the vehicle, leaving space for installation. Designing structures such as card slots within the symmetrical plastic parts allows the symmetrical air filter to be installed more easily and reliably on the air box, saving the cost of purchasing additional air filters. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of an inclined top view of the present invention.

[0021] Figure 2It is a bottom view schematic diagram of the present invention.

[0022] Figure 3 It is a schematic diagram of the inner side of the present invention.

[0023] Figure 4 It is a cross-sectional schematic diagram of the assembly of the present invention.

[0024] Figure 5 This is a schematic cross-sectional diagram of the assembly of the present invention.

[0025] In the figure, 1-air filter, 2-mounting waist hole, 3-rear upper slope, 4-rear slope, 5-front slope, 6-downhill, 7-front upper slope, 8-front slope guardrail, 9-front slope slot, 10-air filter chamber guardrail, 11-rear slope chamber guardrail, 12-rear slope slot, 13-rear slope guardrail, 14-tab, 15-uphill long card plate, 16-partition, 17-air filter chamber, 18-rear slope chamber, 19-air filter chamber plug-in plate, 20-rear slope chamber plug-in plate, 21-partition plate. DETAILED DESCRIPTION

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0027] Example:

[0028] like Figure 1-5 As shown, a symmetrical air filter is a thin-walled shell. The outer shell of the symmetrical air filter is an irregular polyhedron with a multi-curved surface configuration, and the curved surfaces can be distinguished according to the installation position on the vehicle.

[0029] The sloped surface where the air filter 1 is mounted faces the same direction as the front of the vehicle, hence the name front slope 5. The sloped surface connected to front slope 5 and forming an obtuse angle with it is named rear slope 4. Both front slope 5 and rear slope 4 have curved surfaces extending upward. The curved surface extending upward from the front slope 5 is called front upper slope 7, and the curved surface extending upward from the rear slope 4 is called rear upper slope 3.

[0030] On the inside of the front slope 5, where the air filter 1 is mounted, an air filter chamber baffle 10 is provided, surrounding the area on the inside. The area enclosed by the air filter chamber baffle 10 forms an air filter chamber 17. Similarly, on the inside of the rear slope 4, a rear slope chamber baffle 11 is provided, surrounding the area enclosed by the rear slope chamber baffle 11. The area enclosed by the rear slope chamber baffle 11 forms a rear slope chamber 18. The air filter chamber 17 and the rear slope chamber 18 are connected and separated by a partition 16. In the air filter chamber 17, a partition 21 is provided on the side near the front of the vehicle to separate the portion to which the air filter 1 is not bonded from the portion to which the air filter 1 is bonded. The partition 21 is arranged obliquely in the air filter chamber 17, and the two ends of the partition 21 are in contact with and connected to the upper and lower side panels of the air filter chamber baffle 17. The partition plate 21 separates the air filter chamber 17 into two chambers, one large and one small. The end surface of the chamber with the large area is opened as a window, and the window is covered with an air filter 1. The end surface and shell material of the chamber with the small area are both plastic.

[0031] Because the air filter chamber 17 has a large overall area and the window where the air filter 1 is installed is large, the structural strength of the front slope 5 is reduced, and the air filter 1 itself cannot provide support. Therefore, a partition plate 21 is used to divide the air filter chamber 17 into two chambers. The large chamber has a window for installing the air filter 1, and the partition plate 21 separates the small chamber, which improves the overall structural strength of the air filter chamber 17 and provides support for the front slope 5 from the inside.

[0032] A front slope slot 9 is formed between the front slope railing 8 and the air filter chamber railing 10, which can be used for the lower half of the air box structure to be connected to the front slope slot 9 at the front slope 5. The connection method is embedded plug-in, wherein the connection structure of the lower half of the air box connected to the front slope 5 is the air filter chamber plug-in plate 19, and one side of the air filter chamber plug-in plate 19 is matched with one side of the air filter chamber railing 10. The areas of the two matching parts are similar. The air filter chamber railing 10 is the main force-bearing part when the air filter chamber plug-in plate 19 is installed in the front slope slot 9, so the front slope railing 8 can also share part of the force.

[0033] The front slope baffle 8 is connected and installed between the front upslope surface 7 and the downslope surface 6, supporting the U-shaped structure formed by the connection between the front upslope surface 7 and the front slope surface 5 and the downslope surface 6, thereby enhancing the structural strength of the entire shell, making the shell more reliable when installed with the air box, and making the force distribution more reasonable. There is a height difference between the height of the front slope baffle 8 and the air filter chamber baffle 10, wherein the height of the front slope baffle 8 is close to half of the air filter chamber baffle 10. Therefore, the contact between the front slope baffle 8 and the air filter chamber insert 19 mainly plays the role of limiting and fixing. Because the contact area is small, it does not serve as the main contact surface and the main force-bearing surface, but it can share part of the contact force. Its main function is to limit the installation position of the air filter chamber insert 19 to the front slope slot 9, thereby preventing the air filter chamber insert 19 from jumping.

[0034] The front slope baffle 8 and the outer shell covering layer of the air filter housing separate an area on the front slope 5, and this area is provided with a mounting waist hole 2, which is designed as a countersunk hole. The waist hole can be more easily positioned on the corresponding mounting hole provided on the air box, and the installation margin is large, allowing for large errors during manufacturing without affecting installation and use. The design of the countersunk hole allows the height of the fixing to not exceed the surface height of the outer shell, reducing air resistance and improving the performance of the motorcycle. Because the air box is embedded and fixed by plug-in, the number of additional fasteners required is small, and only a few fasteners are needed to achieve a good fixing effect.

[0035] The end of the front slope 5 is tapered, and the side panels of the housing are also in a corresponding shape. This design can improve the structural strength of the air filter housing.

[0036] To ensure that the air entering the engine through the air filter is properly filtered, there are requirements for the air filter structure: the mesh size of the air filter 1 and the strength of the air filter surface; and also for the airtightness of the connection between the air filter and the air box. If gas can leak in through the connection, the air filter 1's function becomes ineffective, and the air filter cannot prevent dust and debris from entering and damaging the engine and cylinder block. Therefore, the air filter compartment insert 19 not only inserts into the front slope slot 9, but also into the slot between the lower slope 6 and the air filter compartment panel 10. This ensures a tight seal between the air filter and the air box at both the side and bottom connections.

[0037] The rear slope 4 is shorter than the front slope 5, while its length is similar. Like the front slope 5, the rear slope 4 has a rear slope chamber 18 on its inner side. Shape-wise, the rear slope chamber 18 on the rear slope 4 and the air filter chamber 17 on the front slope 5 are interconnected. The air filter chamber 17 has a larger area, a smaller aspect ratio, and a square shape. The rear slope chamber 18, on the other hand, has a smaller area, a larger aspect ratio, and a strip shape. A partition 16 is installed at the minimum width, dividing the entire chamber into the air filter chamber 17 and the rear slope chamber 18.

[0038] There is an angle between the front slope surface 5 and the rear slope surface 4. When viewed from the bottom, the shape formed by the front slope surface 5 and the rear slope surface 4 is V-shaped. The rear slope surface chamber 18 provided on the rear slope surface 4 is surrounded by a rear slope surface chamber clapboard 11. The clapboard height of the rear slope surface chamber clapboard 11 is similar to the height of the air filter chamber clapboard 10. The other side of the rear slope surface chamber clapboard 11 is provided with a rear slope clapboard 13, and a rear slope surface slot 12 is formed between the rear slope surface chamber clapboard 11 and the rear slope clapboard 13.

[0039] The rear slope slot 12 can allow the rear slope chamber flashboard 20 of the air box to be plugged in at the rear slope place and the rear slope slot 12. The rear slope chamber flashboard 20 also can insert in the slot formed between the lower slope 6 and the rear slope chamber railing 13 simultaneously.

[0040] Similarly, the height of the rear slope chamber baffle 11 is greater than that of the rear slope chamber baffle 13. During the installation and contact process with the rear slope chamber insert 20, the rear slope chamber baffle 11 serves as the main contact surface and is in full contact with the rear slope chamber insert 20, with the largest contact area, becoming the main force-bearing part. Similar to the air filter chamber baffle 10, the large contact area between the rear slope chamber baffle 11 and the rear slope chamber insert 20 ensures airtightness between the air box and the rear slope chamber 18, thus ensuring that air does not leak from the rear slope chamber insert 20 into the rear slope chamber.

[0041] The rear slope guardrail 13 and the outer shell covering layer of the air filter housing separate an area on the rear slope 4, and this area is provided with a mounting waist hole 2, which is designed as a countersunk hole. The waist hole can be more easily positioned on the corresponding mounting hole provided on the air box, and the installation margin is large, allowing for large errors during manufacturing without affecting installation and use. The design of the countersunk hole allows the height of the fixing to not exceed the surface height of the outer shell, reducing air resistance and improving the performance of the motorcycle. Because the air box is embedded and fixed by plugging, the number of additional fasteners required is small, and only a few fasteners are needed to achieve a good fixing effect.

[0042] When the motorcycle is moving forward, the front slope 5 acts as the windward surface, and the resistance to air contact is large, and the air flow is strong. Therefore, the air filter 1 is arranged here to increase the air intake of the motorcycle when it is moving forward through the air filter. While cooling the engine, the fuel in the engine cylinder can be fully burned, thereby improving thermal efficiency. At the same time, the angle of the front slope 5 of the air filter should not be too large, otherwise it will cause the contact area between the motorcycle and the air to increase, and the resistance will increase. At the same time, since the air filter 1 is directly mounted on the front slope 55 of the air filter, and the air filter itself does not play a supporting role, and its strength is lower than that of other parts of the air filter, when the angle of the front slope 5 of the air filter is too large, on the one hand, the structural advantage of streamlining to reduce resistance will be lost, and on the other hand, when the motorcycle is moving forward quickly, the projected area of the air filter 1 in contact with the gas will increase, causing the pressure of the air filter 1 to be greatly increased.

[0043] Since the air filter 1 cannot withstand greater pressure, the service life and reliability of the air filter 1 will be reduced. The air filter 1 may increase its filter pore diameter under the action of pressure, causing some dust and debris that originally could not pass through the mesh of the air filter 1 to pass through the air filter 1 and enter the air box, and finally enter the engine and damage the engine cylinder.

[0044] The downslope surface 6 is V-shaped due to the splicing shape between the front slope surface 5 and the rear slope surface 4, and it is in the shape of a thin plate. Its width is also small, but it can ensure that the air filter chamber insert 19 and the rear slope chamber insert 20 can be completely covered in the downslope surface 6, and can ensure the air tightness when the air filter is connected to the bottom of the air box.

[0045] At the position of the downslope surface 6 and the outer shell covering layer of the air filter housing, a mounting waist hole 2 is provided at the boundary between the front slope surface 5 and the rear slope surface 4, and the mounting waist hole 2 is designed as a countersunk hole. The waist hole makes it easier to locate the corresponding mounting hole provided on the air box, and the installation margin is large, allowing for large errors during manufacturing without affecting installation and use. The design of the countersunk hole allows the height of the fixing part to not exceed the surface height of the outer shell, reducing air resistance and improving the efficiency of the motorcycle. Because the air box is embedded and fixed by plugging, the number of additional fasteners required is small, and only a few fasteners are needed to achieve a good fixing effect. A V-shaped plane extends downward and inward at the bottom of the downslope surface 6.

[0046] After introducing the connection and installation method of the lower half of the air box and the air filter, and how to ensure the airtightness during the connection, we can now begin to introduce how to connect and install the upper half of the air box and the air filter and ensure the overall airtightness.

[0047] As an explanation, the connection between the upper and lower parts of the air box here has ensured airtightness, and the connection method is not emphasized here.

[0048] The upper portion of the air filter, namely the front upslope surface 7 and the rear upslope surface 3, is provided with a latch 14 for connecting to the upper half of the air box and a long upslope clip 15. The latch 14 is located at the junction of the front upslope surface 7 and the rear upslope surface 3. It is narrow and tongue-shaped. The long upslope clip 15 is long and has an arc at the rear end, allowing it to fit more tightly with the upper half of the air box and ensure airtightness. Below the gap between the latch 14 and the long upslope clip 15 is a waist hole 2 for mounting the air filter to the upper half of the air box. It is located on the rear upslope surface 3.

[0049] Unlike the front slope 5, which is larger than the rear slope 4, the front upward slope 7 is more slender, smaller, and strip-shaped. The rear upward slope 3 is much larger than the front upward slope 7. However, the combined area of the front upward slope 7 and the front slope 5 is comparable to the combined area of the rear slope 4 and the rear upward slope 3. Cover plates extend upward and inward from the tops of the front upward slope 7 and the rear upward slope 3, covering the upper half of the air box and enhancing the airtightness of the connection between the front upward slope 7 and the rear upward slope 3.

[0050] The air filter described above is a one-sided air filter structure, and the air filters with the same structure are symmetrically designed and installed symmetrically on both sides of the air box to provide air intake for the motorcycle.

[0051] This air filter utilizes injection molding to mount the air filter structure onto symmetrical plastic parts at the front of the motorcycle, saving installation space and eliminating the need for an intake duct. This allows the large air filter 1 to directly filter air and allow air to enter. This effectively acts as an air filter, significantly reducing the size of the air filter. It eliminates the need to plan a specific air filter installation area on the vehicle, leaving space for installation. Designing structures such as card slots within the symmetrical plastic parts allows the symmetrical air filter to be more easily and reliably installed on the air box, saving the cost of purchasing additional air filters.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A symmetrical air filter, comprising an air box, characterized in that: An air filter (1) is embedded in the front slope surface (5), an air filter chamber (17) and a rear slope surface chamber (18) are provided on the inner side of the symmetrical air filter, a front slope surface slot (9) is provided between the air filter chamber (17) and the front slope surface baffle (8), and a rear slope surface slot (12) is provided between the rear slope surface chamber (18) and the rear slope surface baffle (13); The symmetrical air filter is plugged into the air box via the front slope slot (9) and the rear slope slot (12).

2. The symmetrical air filter according to claim 1, characterized in that: The outsides of the air filter chamber (17) and the rear slope chamber (18) are respectively surrounded by an air filter chamber baffle (10) and a rear slope chamber baffle (11), and the air filter chamber (17) and the rear slope chamber (18) are separated by a partition (16); The air filter (1) is arranged at the bottom of the air filter chamber (17).

3. The symmetrical air filter according to claim 1, characterized in that: The rear slope chamber (18) is located on the inner side of the rear slope (4); the upper end of the front slope (5) is the front upward slope (7); the upper end of the rear slope (4) is the rear upward slope (3); the lower ends of the front slope (5) and the rear slope (4) are the downward slope (6); and except for the front upward slope (7), all slopes are provided with mounting waist holes (2); There is an included angle between the front slope surface (5) and the rear slope surface (4), and the included angle is an obtuse angle.

4. The symmetrical air filter according to claim 2, characterized in that: The air filter chamber baffle (10) is provided on the periphery of the air filter chamber (17), and the interlayer between the air filter chamber baffle (10) and the front slope baffle (8) is the front slope slot (9); The rear slope chamber (18) is provided with the rear slope chamber clapboard (11) on the periphery thereof, and the interlayer between the rear slope chamber clapboard (11) and the rear slope clapboard (13) is the rear slope slot (12).

5. The symmetrical air filter according to claim 3, characterized in that: A latch tongue (14) is provided on the inner side of the front upslope surface (7), and an arc-shaped upslope long latch plate (15) is provided on the inner side of the rear upslope surface (3).

6. The symmetrical air filter according to claim 1, 2, 3 or 5, characterized in that: An inclined partition plate (21) is provided inside the air filter chamber (17) to divide the air filter chamber (17) into two parts.

7. The symmetrical air filter according to claim 3, characterized in that: The lower slope surface (6) is V-shaped and supports the front slope surface (5) and the rear slope surface (4).

8. The symmetrical air filter according to claim 1, 2, 3, 5 or 7, characterized in that: The symmetrical air filter is a thin-walled shell, and the symmetrical air filter is symmetrically plugged into both sides of the air box.

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