JP4262667B2 - Motorcycle air filter - Google Patents

Description

  The present invention relates to a motorcycle air filter.

The motorcycle engine operates generates atomized oil by mixing clean air and fuel oil to be incorporated is filtered outside air at the air filter, by burning and explosion put the atomized oil to the engine Generate power. And the objective of driving | running | working is achieved by reciprocating the piston with it, and transmitting to the belt transmission mechanism in a transmission box via a crank.

As shown in FIG. 6, the known motorcycle 1 mainly includes elements such as a frame 11, a handle 12, a front wheel 13, a seat 14, a power unit 15, a rear wheel 17, and an outer shell 18. Then, the handle 12 is provided in the front portion upper side of the frame 11, the steering rod 111 is connected to the handle 12. Below the steering rod 111 is a front wheel / shock / absorber 112. A front wheel 13 is attached to the front wheel / shock absorber 112. Above the rear part of the frame 11 is a seat 14 on which a driver rides. A power unit 15 is disposed below the seat 14. A rear wheel 17 is connected to the power unit 15. An air filter 16 is installed above the transmission box 151 of the power unit 15.

  The outer shell 18 includes a central cover 181 disposed below the seat 14 and side covers 182 that shield the vehicle body on the left and right sides of the rear portion of the motorcycle 1. Several vent holes 1811 and 1821 are provided in the center cover 181 and the side cover 182, respectively.

As shown in FIG. 7, the known air filter 16 of the motorcycle 1 has an intake port 161 for taking in outside air and an air discharge port 162 for discharging clean air, and has a filter (not shown) therebetween. A flexible pipe 163 is provided at the front end of the intake port 161, and an outside air guide cover 164 is provided at the front end of the flexible pipe 163. The outside air guide cover 164, there are two fixed ear 1641,1642. The fixed ears 1641 and 1642 are connected to the convex ears 1822 and 1823 of the side cover 182 by screws S. With the above configuration, air entering from the intake port 161 is filtered by the filter and supplied to the carburetor of the motorcycle 1 from the exhaust port 162.

While the motorcycle 1 is traveling, outside air enters the outer shell 18 of the vehicle body through the vent hole 1811 of the central cover 181 and the vent hole 1821 of the side cover 182. Then, the outside air enters the flexible pipe 163 from the outside air guide cover 164 of the air filter 16, and enters the air filter 16 from the flexible pipe 163 through the intake port 161. Here, the filtration action of the filtration unit is received. Subsequently, the air enters the carburetor through the air outlet 162 of the air filter 16 and is mixed with combustion oil to become atomized oil, which becomes fuel when the power unit 15 of the motorcycle 1 operates.
nothing special.

  When the motorcycle 1 travels, dust is often raised by the rotation of the rear wheel 17. As shown in FIG. 8, a dust flying area A is formed above the engine 152 of the power unit 15. During traveling of the motorcycle 1, as shown in FIG. 9, a part of the outside air a <b> 1 enters above the engine 152 from the vent hole 1811 of the central cover 181, and another part a <b> 2 of the outside air passes through the side cover 182. The air enters the outer shell 18 through the pores 1821. Since the dust flying area is above the engine 152, the air entering from the vent hole 1811 of the central cover 181 during traveling of the motorcycle 1 enters the flexible pipe 163 through the outside air guide cover 164.

  Therefore, the airflow entering from the vent hole 1811 of the central cover 181 can effectively eliminate dust in the dust flying area A, but the air containing dust rides on the airflow entering from the vent hole 1811 of the central cover 181. The air filter 16 is entered via the outside air guide cover 164. Due to the restriction or bending of the diameter of the flexible pipe 163 connecting the intake port 161 and the outside air guide cover 164, the air intake amount of the air filter 16 is made insufficient, so that the necessary air amount of the engine 152 can be supplied. Without, it caused a large amount of incomplete combustion gas to be discharged. In addition, the dust lifted by the rear wheel 17 while the motorcycle 1 is traveling rides on the air in the vent hole 1811 of the central cover 181 and enters the air filter 16 via the outside air guide cover 164. That is, the airflow coming from the vent hole 1811 of the center cover 181 has an influence on the service life of the filtration unit because the dust in the dust flying area A cannot be removed outside the air filter.

  Therefore, a main object of the present invention is to provide an air filter that can reduce the influence of the life of the filtration unit due to dust soared by the rear wheel of the motorcycle.

In order to achieve the above object, the present invention provides: (a) taking in outside air entering from a vent provided in a side cover of a motorcycle from an intake port, and supplying clean air after filtering with a filter to the carburetor from the exhaust port. The air filter was composed of (b) an air filter body and an outside air guide mask. (C) The air filter body has an intake port and an exhaust port, and has the filter between the intake port and the exhaust port, and is attached to the power unit. (D) The outside air guide mask is formed in a substantially U-shaped cross section, and a recess is formed in each of an upper side and a lower side of the substantially U-shaped cross section. The mask is attached to the frame in such a manner that the side opening of the mask corresponds to the vent hole of the side cover and the rear opening corresponds to the air inlet of the air filter body. (E) The outside air guide mask forms an outside air guide path for guiding outside air entering from the vent hole of the side cover directly to the air inlet of the air filter body at the upper side, the lower side, and the side of the substantially U-shaped cross section. is doing. (F) The outside air guide mask is formed by extending the side in the direction of the air filter body, enters from a vent hole provided in a central cover of the motorcycle, and passes outside the engine. Has a baffle plate that prevents the air from entering the inlet. It is characterized by the above.
With the above structure, it is the outside air entering through the ventilation holes of the support Idokaba incorporated directly into the intake port by the outside air guide mask, air containing dust engine upward entering the inlet by baffle plate provided on the outside air guide mask Is prevented.

According to the present invention, the baffle plate of the outside air guide mask enters from the vent hole of the center cover while the motorcycle is running, and prevents outside air that passes over the engine and excludes dust from entering the air filter inlet. As a result, dust does not enter the air filter. Moreover, the airflow in the vent hole of the center cover blows away dust above the engine. Accordingly, since clean air enters the air filter from the outside air guide passage formed by the outside air guide mask and the intake port, a remarkable dustproof effect is obtained and the life of the air filter is greatly extended. Further, it is not necessary to install a flexible pipe that has been conventionally used at the air inlet of the air filter. Accordingly, not only the disadvantage that the air intake amount of the air filter is insufficient due to the restriction or bending of the diameter due to the flexible pipe is solved, but also the manufacturing cost of the air filter is reduced because the flexible pipe is unnecessary. The Furthermore, the shape of the outside air guide mask is simplified, and the manufacturing cost can be reduced. Furthermore, the outside air guide mask can be easily and firmly attached to the frame.

The basic configuration of a motorcycle according to the present invention is the same as that of a conventional product as shown in FIG. That is, the motorcycle M has a frame 3 and a power unit 6 below the seat P. The air filter 2 is provided above the transmission box 61 of the power unit 6. Detailed description thereof is omitted. Hereinafter, a configuration different from the conventional product will be described.

  As shown in FIG. 2, the air filter 2 of the present invention mainly includes a main body 21 and an outside air guide mask 22. The main body 21 has an intake port 211 and an exhaust port 212. The intake port 211 forms an opening 2111 that opens from the main body 21 toward the vehicle head. Exhaust port 212 is connected to a carburetor (not shown).

The outside air guide mask 22 has a substantially U-shaped cross section, and is installed inside the outer shell. A stepped portion 221 is formed on the upper side portion of the outside air guide mask 22 having a substantially U-shaped cross section. A fixed ear 2211 is extended from the upper part of the stepped portion 221, and a screw hole 2212 is formed in the fixed ear 2211. The fixed ear 2211 and the frame 3 are connected by screwing the screw S1 from the screw hole 2212 into the screw hole 311 provided in the convex ear 31 of the frame 3. An upper concave portion 2213 is provided at the lower portion of the stepped portion 221. The frame 3 is fitted into the upper recess 2213. The side of the outside air guide mask 22 having a U-shaped cross section is extended rearward to form a baffle plate 2214 . A flat portion 222 parallel to the stepped portion 221 is provided on the lower side of the U-shaped cross section of the outside air guide mask 22, and a lower concave portion 2221 is provided on the flat portion 222. The frame 3 is also fitted into the lower recess 2221. A fixed ear 2222 is extended from the lower portion of the flat portion 222, and a screw hole 2223 is provided in the fixed ear 2222. By screwing the screw S1 into the screw hole 2223 and the screw hole 321 of the convex ear 32 of the frame 3,
The fixed ear 2222 and the convex ear 32 of the frame 3 are connected.

  As shown in FIGS. 1 and 3, when the outside air guide mask 22 is coupled to the frame 3, the convex ears 31 of the frame 3 are placed on the step portion 221 of the outside air guide mask 22. Then, the fixed ears 2211 and 2222 of the outside air guide mask 22 are aligned with the screw holes 311 and 312 of the convex ears 31 and 32 of the frame 3, respectively, and the screw S1 is screwed.

As shown in FIGS. 4 and 5, when the motorcycle M travels, a part of the outside air a <b> 1 enters above the engine 62 of the power unit 6 through the vent hole 41 of the center cover 4. The other part a2 of the outside air enters from the vent hole 51 of the side cover 5. When the frame 3 of the motorcycle M moves downward due to the weight of the driver or passenger, the outside air guide mask 22 provided on the frame 3 also moves downward. Since the baffle plate 2214 of the outside air guide mask 22 shields the gap 2111 at the side of the intake port 211, the air entering from the vent hole 41 of the center cover 4 does not enter the air filter 2. However, the air entering from the vent hole 51 of the side cover 5 enters the air filter 2 from the outside air guide passage B constituted by the outside air guide mask 22 and the frame 3 through the intake port 211 of the main body 21. Air flowing into the air filter 2 is mixed with fuel oil in the carburetor, it will be atomized oil, is supplied to the engine 62 of the power unit 6.

  In short, according to the present invention, the frame 3 in front of the main body 21 of the air filter 2 is provided with the outside air guide mask 22 that moves with the frame 3, and the outside air that enters the outside air guide mask through the vent hole of the side cover is supplied to the body 21 of the air filter 2. Since the outside air guide passage B directly taken into the intake port is formed, unlike the conventional case, there is no need to provide a flexible pipe at the intake port 211 of the air filter 2. Not only is the disadvantage that the intake amount is insufficient eliminated, but the installation cost of the flexible pipe is not required, so the manufacturing cost of the air filter 2 is reduced.

  Further, when the motorcycle M is traveling, the baffle plate 2214 of the outside air guide mask 22 enters from the vent hole of the center cover, and the outside air passing through the upper part of the engine and removing dust enters the inlet 211 of the air filter 2. Since it blocks, dust does not enter the air filter 2. Further, the dust above the engine 62 is blown off by the airflow in the vent hole 41 of the central cover 4. Therefore, since clean air enters the air filter 2 from the outside air guide passage B formed by the outside air guide mask 22 and the intake port 211, a remarkable dustproof effect is obtained and the life of the air filter is greatly extended.

The side view which shows the state in which the air filter was installed in the motorcycle. 1 is an exploded perspective view of an air filter and a frame according to the present invention. Explanatory drawing which shows the state which couple | bonded the external air guidance mask and frame which concern on this invention. Explanatory drawing which shows the external air guidance mask structure of the air filter by this invention. The top view of the principal part which shows the structure of the external air guidance mask by this invention. A side view of a conventional motorcycle. The exploded perspective view of the air filter and vehicle body structural member of the conventional motorcycle. Explanatory drawing which shows that the air filter of the conventional motorcycle is installed above a transmission box. The top view which shows the local part of the conventional motorcycle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Conventional motorcycle 11 Frame 12 Handle 13 Front wheel 14 Seat 16 Power unit 17 Rear wheel 18 Outer shell 111 Steering rod 112 Front wheel shock / absorber 151 Transmission box 181 Central cover 1811 Vent hole 182 Side cover 1821 Vent hole 161 Inlet port 162 Exhaust port 163 Flexible pipe 164 Outside air guide cover 1641, 1642, 1822, 1823 Fixed ear S Screw 152 Engine M Motorcycle 3 Frame P Seat 6 Power unit 61 Transmission box 2 Air filter 11 Main body 22 Outside air guide mask 211 Inlet 212 Outlet 2111 Opening Portion 221 Stepped portion 2211, 2222 Fixed ear 2212, 311, 2223, 321 Screw hole 31 Recessed ear 2213 Upper recess 2221 Lower recess 2214 Baffle plate 222 Plane portion S Screws 62 Engine 51 and 41 vents 4 center cover

Claims (1)

In the air filter that takes in outside air that enters from the vent hole provided in the side cover of the motorcycle from the intake port and supplies clean air after filtering through the filter to the carburetor from the exhaust port,
It consists of an air filter body and an outside air guide mask.
The air filter body has an intake port and an exhaust port, and has the filter between the intake port and the exhaust port, and is attached to the power unit,
The outside air guide mask is formed in a substantially U-shaped cross section , and a recess is formed in each of the upper side and the lower side of the substantially U-shaped cross section. the surface apertures to correspond to the ventilation holes of the side cover, and attached to the frame in a state where the corresponding rear openings to the intake port of the air filter body,
The outside air guide mask forms an outside air guide path that directly guides the outside air that enters from the vent hole of the side cover at the upper side, the lower side, and the side of the substantially U-shaped cross section, to the air inlet of the air filter body,
Outside air guide masks are formed by extending the side edge on the air filter body direction, before SL enters from the vent hole is provided on the center cover motorcycle and the outside air is the air inlet passing through the engine upper Having a baffle plate that prevents entry into the
Motorcycle air filter, characterized in that.

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