Filtering mechanism for a stepless transmission system

Abstract

The present application provides a kind of filtering mechanism of continuously variable transmission system, continuously variable transmission system is installed in the transmission case of vehicle body, transmission case has transmission case cover, has cooling air inlet, and cooling air guide cover is arranged on the outside of transmission case cover, and has the air guide hole for the cooling air of outside, filtering mechanism includes: first filter piece, first filter piece is located on cooling air guide cover;Second filter piece, second filter piece is located in the outside of cooling air inlet in transmission case cover;And cooling air flow path, it is continuously extended from air guide hole through first filter piece and second filter piece to transmission case cover.

Description

Technical Field

[0001] This invention is primarily a filter mechanism for a continuously variable transmission (CVT) system, specifically designed to prevent dust or foreign objects in the air from entering the transmission housing, thereby ensuring the cleanliness of the cooling air and improving the performance of the CVT system. Background Technology

[0002] Both motorcycles and cars are road vehicles. Cars are large and heavy, making them almost impossible for one person to push alone, and their design and manufacturing costs are also higher. In contrast, motorcycles have advantages such as agility, ease of one-person propulsion, and lower cost. Therefore, motorcycles are common in densely populated areas with limited space.

[0003] The belt-driven continuously variable transmission (CVT) in typical motorcycles is one of the key factors contributing to their ease of operation. When a motorcycle is traveling at high speeds, the transmission inevitably generates high temperatures. Therefore, a cooling design is necessary to reduce the temperature of the transmission mechanism. Furthermore, the cooling air introduced into the transmission must first filter out larger dust particles to prevent damage to the transmission mechanism. Thus, the transmission must be equipped with a filter device. It is known that the air intake vents face forward of the vehicle. While the positive pressure created by the vehicle's movement helps to draw cooling air into the CVT chamber, it also easily draws in dust from the outside, causing dust accumulation on the filter screen, shortening its lifespan, and making the CVT chamber prone to dust ingress, resulting in belt wear and damage to the CVT system. Summary of the Invention

[0004] This invention provides a filtration mechanism for a continuously variable transmission (CVT) system. By employing a two-stage dust filter structure, it improves the filtration effect by delivering cleaner cooling air, thus providing a better cooling effect for the CVT system.

[0005] The present invention discloses a filtering mechanism for a continuously variable transmission (CVT) system, wherein the CVT system is installed in a transmission housing of a vehicle body. The transmission housing has a transmission housing cover with a cooling air inlet and a cooling air guide cover disposed on the outside of the transmission housing cover, and has an air guide hole for external cooling air to enter. The filtering mechanism includes: a first filter element located on the cooling air guide cover; a second filter element located outside the cooling air inlet in the transmission housing cover; and a cooling air flow path that extends continuously from the air guide hole through the first filter element and the second filter element to the transmission housing cover.

[0006] In one embodiment of the present invention, the continuously variable transmission system includes: a drive disc assembly; a driven disc assembly; and a transmission belt connecting the two, wherein the cooling air guide cover is located on the drive disc assembly side, and the air guide hole faces the front or side of the vehicle body to facilitate the acquisition of external cooling air.

[0007] In one embodiment of the present invention, the first filter element has a first filter screen, the second filter element has a second filter screen, and the density of the first filter screen is lower than the density of the second filter screen.

[0008] In one embodiment of the present invention, the first filter element has a first filter screen and a third filter screen, wherein the third filter screen has greater rigidity than the first filter screen.

[0009] In one embodiment of the present invention, the first filter element described above has an outer ring frame and a plurality of ribs for fixing the first filter screen.

[0010] In one embodiment of the present invention, the third filter and the first filter can be easily disassembled simultaneously from the first filter element.

[0011] In one embodiment of the present invention, the inner side of the cooling air guide cover is surrounded by a sponge strip.

[0012] In one embodiment of the present invention, the first filter element includes a positioning hole for fixing the first filter element at the position of the air guide hole.

[0013] In one embodiment of the present invention, the cooling air guide cover has multiple guide ribs to form the cooling airflow path.

[0014] In one embodiment of the invention, the cooling airflow path is configured to guide the external cooling air radially inward through the first filter and the external cooling air radially inward through the second filter.

[0015] This invention utilizes a multi-layered filtration structure in the continuously variable transmission (CVT) system's filtration mechanism. Two layers of dust filters are installed inside the cooling air guide cover, improving upon traditional filters that are prone to dust accumulation. After cooling air is introduced through the air vents, the first filter removes larger dust particles and impurities. The pre-filtered air is then guided along the airflow path to the second filter for a second filtration, effectively reducing dust and impurities in the cooling air. This prevents dust from entering the CVT system, which could cause belt wear or damage, achieving a better cooling effect. Furthermore, the density of the first filter is lower than that of the second filter, facilitating airflow. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of a filter mechanism in a continuously variable transmission system according to the present invention;

[0017] Figure 2 This is an exploded view of the transmission box and cooling air guide cover in the filter mechanism of a continuously variable transmission system according to the present invention.

[0018] Figure 3This is an exploded view of the cooling air guide cover and filter element in the filter mechanism of a continuously variable transmission system according to the present invention.

[0019] Figure 4 This is a front view of the cooling air guide cover in the filter mechanism of a continuously variable transmission system according to the present invention;

[0020] Figure 5 This is a rear view of the cooling air guide cover in the filter mechanism of a continuously variable transmission system according to the present invention;

[0021] Figure 6 This is a schematic diagram of the cooling airflow in the filter mechanism of a continuously variable transmission system according to the present invention;

[0022] Figure 7 This is a schematic diagram of a continuously variable transmission (CVT) system filter mechanism according to the present invention used in a vehicle.

[0023] List of reference numerals

[0024] 1. Continuously Variable Transmission System

[0025] 11 Drive disk group

[0026] 12 Passive disk group

[0027] 13. Transmission belt components

[0028] 2. Transmission box

[0029] 21 Transmission box cover

[0030] 22 Cooling air inlet

[0031] 3 Cooling air guide cover

[0032] 31 Air guide holes

[0033] 32 guide sheets

[0034] 33 External cooling air inlet

[0035] 34 Guide Ribs

[0036] 35 Sponge strips

[0037] 4 First filter element

[0038] 41 Third Filter

[0039] 42 First Filter

[0040] 43 Outer Ring Frame

[0041] 44 Ribs

[0042] 45 positioning holes

[0043] 5 Second filter element

[0044] 51 Second Filter

[0045] 6 Cooling airflow path

[0046] 7. Motorcycle

[0047] 71 Frame Units

[0048] 72 front wheels

[0049] 73 Steering Mechanism

[0050] 74 Seat Cushions

[0051] 75 Storage Box

[0052] 76 Fuel Tank

[0053] 77 Rear wheel. Detailed Implementation

[0054] To make the above features and advantages of the present invention more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings for detailed explanation.

[0055] Figure 1 This is a cross-sectional view of a filtering mechanism in a continuously variable transmission system according to the present invention. Figure 1 Among them, a filtering mechanism for a continuously variable transmission (CVT) system is disclosed. The CVT system 1 is installed in a transmission housing 2 of a vehicle body. The transmission housing 2 has a transmission housing cover 21, which has a cooling air inlet 22, and a cooling air guide cover 3 disposed on the outside of the transmission housing cover 21, and has an air guide hole 31 for external cooling air to enter. The filtering mechanism includes: a first filter element 4, which is located outside the cooling air inlet 22 in the cooling air guide cover 3; a second filter element 5, which is located on the transmission housing cover 21; and a cooling air flow path 6, which extends continuously from the air guide hole 31 through the first filter element 4 and the second filter element 5 to the transmission housing cover 21.

[0056] In this embodiment, the continuously variable transmission system 1 includes: a drive disc assembly 11; a driven disc assembly 12; and a transmission belt 13 connecting the two. The cooling air guide cover 3 is located on the side of the drive disc assembly 11, and the air guide hole 31 faces the front or side of the vehicle body to facilitate the acquisition of external cooling air.

[0057] A transmission belt 13 is sleeved between the drive disc assembly 11 and the driven disc assembly 12. The transmission belt 13 can be a belt or a chain. The driven disc assembly 12 is connected to a transmission gear set. The drive disc assembly 11 can transmit power to the driven disc assembly at the other end of the transmission box 2 via the transmission belt 13, and finally transmit it to the rear wheel axle to drive the rear wheel via the transmission gear set.

[0058] In this invention, a continuously variable transmission (CVT) system 1 is installed inside a transmission housing 2. The CVT system 1 includes a drive disc assembly, a driven disc assembly 12, and a transmission belt 13 connecting the drive disc assembly 11 and the driven disc assembly 12. The transmission housing 2 has a transmission housing cover 21, on which a cooling air inlet 22 is provided on the drive disc assembly side of the CVT system 1. A cooling air guide cover 3 is provided on the outer side of the transmission housing cover 21. The cooling air guide cover 3 has an air guide hole 31 facing the vehicle body side for external cooling air to enter. Through a first filter 4 and a second filter 5, the external cooling air is guided into the transmission housing cover 21 via a cooling air flow path 6. This prevents dust or foreign objects in the external cooling air from entering the transmission housing 2, thereby ensuring the cleanliness of the cooling air and improving the performance of the CVT system 1.

[0059] The air vent 31 is provided with a plurality of guide plates 32 in the form of a grid slightly facing the vertical direction of the vehicle body. These guide plates 32 can divide the air vent 31 into several small external cooling air inlets 33. These guide plates 32 are respectively arranged at an angle facing the rear side of the vehicle body and in a slightly parallel manner. The cooling air guide cover 3 is provided with a plurality of guide ribs 34 facing the front of the air vent 31. These guide ribs 34 define the cooling air flow path 6.

[0060] In this embodiment, the first filter element 4 has a first filter screen 42, and the second filter element 5 has a second filter screen 51. The density of the first filter screen 42 is lower than the density of the second filter screen 51.

[0061] Because the first filter 42 has a low density, it facilitates the entry of external cooling air.

[0062] The first filter screen 42 and the second filter screen 51 have multiple filter holes, which may be composed of, but are not limited to, paper, foam, cotton, spun glass fiber, or other known filter materials, woven or nonwoven materials, synthetic or natural materials, or any combination thereof.

[0063] The first filter element 4 has a third filter screen 41, which has a greater rigidity than the first filter screen.

[0064] Preferably, the third filter 41 may be made of, but is not limited to, metal.

[0065] The third filter 41 is located between the outer side of the drive disk assembly 11 and the air guide hole 31, which can filter larger dust or impurities and improve the installation stability of the first filter 42.

[0066] These impurities also include fine-grained sand or stones from the outside.

[0067] The third filter 41 and the first filter 42 can be easily removed from the first filter element 4 at the same time.

[0068] The first filter element 4 has an outer ring frame 43 and a plurality of ribs 44 for fixing the first filter screen 42.

[0069] The first filter element 4 is fixed to the cooling air guide cover 3 by means of the outer ring frame 43 and the ribs 44.

[0070] In this embodiment, the inner side of the cooling air guide cover 3 is surrounded by a sponge strip 35.

[0071] These sponge strips 35 prevent external cooling air from leaking out, achieving an airtight effect.

[0072] In this embodiment, the first filter element 4 includes a positioning hole 45 for fixing the first filter element 4 at the position of the air guide hole 31.

[0073] The positioning hole 45 allows it to be locked together with the cooling air guide cover 3 onto the transmission box cover 21 to avoid interfering with the transmission box cover 21 and to achieve a more compact configuration.

[0074] In this embodiment, the cooling air guide cover 3 has multiple guide ribs 34 to form the cooling airflow path 6.

[0075] In this embodiment, the cooling airflow path 6 is configured to guide the external cooling air radially inward through the first filter element 4 and the external cooling air radially inward through the second filter element 5.

[0076] The cooling airflow path 6 ensures that the external cooling air can flow to the cooling air inlet 22 of the transmission box cover 21, thereby improving the performance of the continuously variable transmission system 1.

[0077] Please also refer to Figure 2 and Figure 3 , Figure 2 This is an exploded view of the transmission box 2 and cooling air guide cover 3 in the filter mechanism of a continuously variable transmission system according to the present invention. Figure 3 This is an exploded view of the cooling air guide cover 3 and the filter element in the filter mechanism of a continuously variable transmission system according to the present invention.

[0078] The continuously variable transmission (CVT) system 1 is installed inside the transmission case 2. The CVT system 1 includes a drive disc assembly 11, a driven disc assembly 12, and a transmission belt 13 connecting the drive disc assembly 11 and the driven disc assembly 12. The transmission case 2 has a transmission case cover 21. The transmission case cover 21 has a cooling air inlet 22 on the drive disc assembly 11 side of the CVT system 1. A cooling air guide cover 3 is provided on the outer side of the transmission case cover 21. The cooling air guide cover 3 has an air guide hole 31 facing the vehicle body side to allow external cooling air to enter. Through the first filter 4 and the second filter 5, the external cooling air is guided into the transmission case cover 21 via the cooling air flow path 6. This can prevent dust or foreign objects in the external cooling air from entering the transmission case 2, thereby ensuring the cleanliness of the cooling air and improving the performance of the CVT system 1.

[0079] The cooling air guide cover 3 is located on the side of the drive disc assembly 11, and the air guide hole 31 faces the front or side of the vehicle body to facilitate the acquisition of external cooling air.

[0080] The air vent 31 is provided with a plurality of guide plates 32 in the form of a grid slightly facing the vertical direction of the vehicle body. These guide plates 32 can divide the air vent 31 into several small external cooling air inlets 33. These guide plates 32 are respectively arranged at an angle facing the rear side of the vehicle body and in a slightly parallel manner. The cooling air guide cover 3 is provided with a plurality of guide ribs 34 facing the front of the air vent 31. These guide ribs 34 define the cooling air flow path 6.

[0081] In this embodiment, the first filter element 4 has a first filter screen 42, and the second filter element 5 has a second filter screen 51. The density of the first filter screen 42 is lower than the density of the second filter screen 51.

[0082] Because the first filter 42 has a low density, it facilitates the entry of external cooling air.

[0083] The first filter screen 42 and the second filter screen 51 have multiple filter holes, which may be composed of, but are not limited to, paper, foam, cotton, spun glass fiber, or other known filter materials, woven or nonwoven materials, synthetic or natural materials, or any combination thereof.

[0084] The first filter element 4 has a third filter screen 41, which has a greater rigidity than the first filter screen.

[0085] Preferably, the third filter 41 may be made of, but is not limited to, metal.

[0086] The third filter 41 is located between the outer side of the drive disk assembly 11 and the air guide hole 31, which can filter larger dust or impurities and improve the installation stability of the first filter 42.

[0087] These impurities also include fine-grained sand or stones from the outside.

[0088] The third filter 41 and the first filter 42 can be easily removed from the first filter element 4 at the same time.

[0089] The first filter element 4 has an outer ring frame 43 and a plurality of ribs 44 for fixing the first filter screen 42.

[0090] The first filter element 4 is fixed to the cooling air guide cover 3 by means of the outer ring frame 43 and the ribs 44.

[0091] In this embodiment, the inner side of the cooling air guide cover 3 is surrounded by a sponge strip 35.

[0092] These sponge strips 35 prevent external cooling air from leaking out, achieving an airtight effect.

[0093] In this embodiment, the first filter element 4 includes a positioning hole 45 for fixing the first filter element 4 at the position of the air guide hole 31.

[0094] The positioning hole 45 allows it to be locked together with the cooling air guide cover 3 onto the transmission box cover 21 to avoid interfering with the transmission box cover 21 and to achieve a more compact configuration.

[0095] In this embodiment, the cooling air guide cover 3 has multiple guide ribs 34 to form the cooling airflow path 6.

[0096] In this embodiment, the cooling airflow path 6 is configured to guide the external cooling air radially inward through the first filter element 4 and the external cooling air radially inward through the second filter element 5.

[0097] The cooling airflow path 6 ensures that the external cooling air can flow to the cooling air inlet 22 of the transmission box cover 21, thereby improving the performance of the continuously variable transmission system 1.

[0098] Please refer to the following at the same time Figure 4 and Figure 5 , Figure 4 This is a front view of the cooling air guide cover 3 in the filter mechanism of a continuously variable transmission system according to the present invention; Figure 5 This is a rear view of the cooling air guide cover 3 in the filter mechanism of a continuously variable transmission system according to the present invention.

[0099] The cooling air guide cover 3 is installed on the outside of the transmission box cover 21. The cooling air guide cover 3 has an air guide hole 31 for external cooling air to enter at the driven disc assembly 12 corresponding to the continuously variable transmission system 1. The opening direction of the air guide hole 31 is towards the side of the vehicle body. The air guide hole 31 has a plurality of guide plates 32 in the form of a fence slightly facing the vertical direction of the vehicle body. These guide plates 32 can divide the air guide hole 31 into several small external cooling air inlets 33. These guide plates 32 are respectively arranged at an angle towards the rear side of the vehicle body and in a slightly parallel manner. The cooling air guide cover 3 has a plurality of guide ribs 34 facing the front of the air guide hole 31. These guide ribs 34 define the cooling air flow path 6.

[0100] The cooling air guide cover 3 has an air guide hole 31 facing the side of the vehicle body for the entry of external cooling air. Through the first filter element 4 and the second filter element 5, the external cooling air is guided into the transmission box cover 21 via the cooling air flow path 6. This can prevent dust or foreign objects in the external cooling air from entering the transmission box 2, thereby ensuring the cleanliness of the cooling air and improving the performance of the continuously variable transmission system 1.

[0101] The first filter element 4 has an outer ring frame 43 and a plurality of ribs 44 for fixing the first filter screen 42.

[0102] The first filter element 4 is fixed to the cooling air guide cover 3 by means of the outer ring frame 43 and the ribs 44.

[0103] In this embodiment, the inner side of the cooling air guide cover 3 is surrounded by a sponge strip 35.

[0104] These sponge strips 35 prevent external cooling air from leaking out, achieving an airtight effect.

[0105] In this embodiment, the first filter element 4 includes a positioning hole 45 for fixing the first filter element 4 at the position of the air guide hole 31.

[0106] The positioning hole 45 allows it to be locked together with the cooling air guide cover 3 onto the transmission box cover 21 to avoid interfering with the transmission box cover 21 and to achieve a more compact configuration.

[0107] In this embodiment, the cooling air guide cover 3 has multiple guide ribs 34 to form the cooling airflow path 6.

[0108] In this embodiment, the cooling airflow path 6 is configured to guide the external cooling air radially inward through the first filter element 4 and the external cooling air radially inward through the second filter element 5.

[0109] The cooling airflow path 6 ensures that the external cooling air can flow to the cooling air inlet 22 of the transmission box cover 21, thereby improving the performance of the continuously variable transmission system 1.

[0110] Please refer to Figure 6 , Figure 6 This is a schematic diagram of the cooling airflow in the filter mechanism of a continuously variable transmission system according to the present invention.

[0111] The cooling air guide cover 3 is installed on the outside of the transmission box cover 21. The cooling air guide cover 3 has an air guide hole 31 at the location corresponding to the driven disc assembly 12 of the continuously variable transmission system 1, allowing external cooling air to enter. The air guide hole 31 opens towards the side of the vehicle body. The air guide hole 31 has multiple guide plates 32 in the form of a grid slightly facing the vertical direction of the vehicle body. These guide plates 32 divide the air guide hole 31 into several small external cooling air inlets 33, each facing towards the side of the vehicle body. The cooling air guide cover 3 is set at a rearward angle and in a slightly parallel manner; multiple guide ribs 34 are provided on the air guide hole 31 facing the front of the vehicle body. These guide ribs 34 define the cooling air flow path 6. When the outside cooling air enters the air guide hole 31, it is guided by the first filter 4 through the cooling air flow path 6 to the second filter 5, and then enters the transmission box cover 21. This can prevent dust or foreign objects in the outside cooling air from entering the transmission box 2, thereby ensuring the cleanliness of the cooling air and improving the performance of the continuously variable transmission system 1.

[0112] Please refer to Figure 7 , Figure 7 This is a schematic diagram of a continuously variable transmission (CVT) system filter mechanism according to the present invention used in a vehicle.

[0113] The present invention is implemented in a vehicle, taking a motorcycle 7 as an example. The motorcycle 7 has a frame unit 71, to which an engine unit for generating power is connected. A front wheel 72 is supported at the front end of the frame unit 71. Above the front wheel 72 and supported on the frame unit 71, a steering mechanism 73 for steering the motorcycle 7 is provided. Above the rear end of the frame unit 71, a seat 74 for the driver is provided, and below the seat 74, there is a storage compartment. The vehicle has a storage compartment 75, and a fuel tank 76 (or battery) is provided between the front wheel 72 and the seat 74 of the frame unit 71; the engine unit has a crankcase that can house the crankshaft, the crankshaft is connected to a piston, and the drive disc assembly 11 of the continuously variable transmission 1 is provided on the crankshaft of the engine unit; a rear rocker arm is pivotally mounted at the rear end of the crankcase, and a rear wheel 77 is pivotally mounted at the rear end of the rear rocker arm, and the rear rocker arm can swing freely up and down with the shaft of the driven disc assembly 12 of the continuously variable transmission 1 as the swing center.

[0114] When the engine unit starts, it drives the drive plate assembly 11 of the continuously variable transmission system 1 in the transmission case 2 to rotate. This causes the drive plate assembly 11 to create a negative pressure suction force within the transmission case 2, drawing external cooling air from the front of the vehicle body at an angle through the air vents 31 of the cooling air guide cover 3 into the cooling air guide cover 3. Figure 6 As indicated by the arrow, after the first filtration by the first filter element 4, the airflow is guided by the cooling airflow path 6 defined by the guide rib 34, and flows towards the front of the vehicle body between the cooling air guide cover 3 and the transmission box cover 21 of the transmission box 2. After the second filtration by the second filter element 5, the airflow is drawn into the transmission box 2 through the cooling air inlet 22 to cool the continuously variable transmission system 1, thereby improving the performance of the continuously variable transmission system 1.

[0115] In summary, the continuously variable transmission (CVT) system filtration mechanism of the present invention utilizes a multi-layer filtration structure, adding two layers of dust-proof filters inside the cooling air guide cover to improve the problem of dust accumulation in traditional filters. After cooling air is introduced through the air guide hole, the first filter removes larger dust and impurities, and the pre-filtered cooling air is then guided along the cooling airflow path to the second filter for a second filtration. This effectively reduces dust and impurities in the cooling air, preventing dust from entering the CVT system and causing belt wear or damage to the CVT system, achieving a better cooling effect. Furthermore, the density of the first filter is lower than that of the second filter, which facilitates air intake.

[0116] Although the present invention has been disclosed with reference to the foregoing embodiments, it is not intended to limit the present invention. Any modifications and equivalent substitutions made by those skilled in the art without departing from the spirit and scope of the present invention shall still be within the scope of patent protection of the present invention.

Claims

1. A filter mechanism for a continuously variable transmission (CVT) system, characterized in that, The continuously variable transmission (CVT) system is installed in a transmission case within a vehicle body. The transmission case has a transmission case cover with a cooling air inlet and a cooling air guide cover located on the outside of the transmission case cover, and has an air vent for external cooling air to enter. The filtration mechanism includes: A first filter element, the first filter element being located on the cooling air guide cover; A second filter element, the second filter element being located outside the cooling air inlet in the transmission housing cover; and A cooling airflow path extends continuously from the air guide hole through the first filter and the second filter to the transmission box cover.

2. The filtering mechanism of the continuously variable transmission system according to claim 1, characterized in that, The continuously variable transmission system includes: a drive disc assembly; a driven disc assembly; and a transmission belt connecting the two, wherein the cooling air guide cover is located on the drive disc assembly side, and the air guide hole faces the front or side of the vehicle body to facilitate the acquisition of external cooling air.

3. The filtering mechanism of the continuously variable transmission system according to claim 1, characterized in that, The first filter element has a first filter screen, and the second filter element has a second filter screen, wherein the density of the first filter screen is lower than the density of the second filter screen.

4. The filtering mechanism of the continuously variable transmission system according to claim 1, characterized in that, The first filter element has a first filter screen and a third filter screen, wherein the third filter screen has greater rigidity than the first filter screen.

5. The filtering mechanism of the continuously variable transmission system according to claim 4, characterized in that, The first filter element has an outer ring frame and multiple ribs for fixing the first filter screen.

6. The filtering mechanism of the continuously variable transmission system according to claim 3 or 4, characterized in that, The third filter and the first filter can be easily disassembled simultaneously from the first filter element.

7. The filtering mechanism of the continuously variable transmission system according to claim 1, characterized in that, The cooling air guide cover has a sponge strip surrounding the inside.

8. The filtering mechanism of the continuously variable transmission system according to claim 1, characterized in that, The first filter element includes a positioning hole for fixing the first filter element at the position of the air guide hole.

9. The filtering mechanism of the continuously variable transmission system according to claim 1, characterized in that, The cooling air guide cover has multiple guide ribs to form the cooling airflow path.

10. The filtering mechanism of the continuously variable transmission system according to claim 1, characterized in that, The cooling airflow path is configured to guide the external cooling air radially inward through the first filter and the external cooling air radially inward through the second filter.

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