JPH063179Y2 - Air cleaner device - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to an air cleaner device, and in particular, it can be used for vehicles for traveling on rough terrain such as buggy vehicles.

[Conventional technology]

Conventionally, in vehicles with high running performance on rough terrain such as buggy cars and motorcycles, in order to prevent dust and the like from entering the engine intake air, an air cleaner is installed between the engine intake side such as the carburetor and the outside air introduction duct. Is provided. Further, in these vehicles, there are many occasions of traveling on sandy or watersides, and the gear case and the brake drum are hermetically sealed in order to prevent obstacles and the like caused by the intrusion of dust and water. In such a sealed gear case, the seal member in the gear case sealing portion is easily deteriorated or damaged due to the pressure difference between the inside and the outside of the case due to the temperature change inside the gear case during operation. A breather valve that communicates the inside and the outside is provided to allow air to flow, and the pressure difference between the inside and the outside of the gear case is evened out.

By the way, a buggy car may be used in a state where the vehicle body is half submerged, such as running over a river crossing or a swamp, and at such a half submersion, the breather valve such as the final gear case installed on the axle is Submerged in water,
Water sucked from the breather valve may enter the gear case and adversely affect the internal gear and oil. For this reason, a breather tube is attached to the breather valve, and the opening of the breather tube is arranged above the vehicle body, for example, at a position above the line connecting at least the upper ends of the front wheels and the rear wheels such as the frame portion covered by the fuel tank. (Japanese Patent Laid-Open No. 59-137)
(See Japanese Patent No. 217).

[Problems to be solved by the invention]

However, when the breather tube from the final gear case provided at the lower rear part of the vehicle body is extended to the position covered by the fuel tank, the distance of the breather tube becomes a considerable length, and other wires and cables are There is a problem that the surroundings of the frame material installed along the lines are complicated. Also, even if the opening of the breather tube is arranged above the vehicle body, it is still open to the outside air, and it is not possible to completely eliminate the splash of water that reaches it, so the water sucked in from the opening will reach the inside of the gear case. There was a risk of intrusion.

An object of the present invention is to provide an air cleaner device which can prevent the intrusion of water and the like into the breather tube, can shorten the breather tube to facilitate handling, and can enhance the manufacturing workability and space utilization efficiency. is there.

[Means for solving problems]

According to the present invention, an air cleaner container provided on the intake side of an engine is arranged substantially in the center of a vehicle body, and a connecting tube continuing to the intake side of the engine, an intake tube continuing to a duct for introducing outside air, and a breather continuing to other parts. The tubes are collectively connected to the front wall surface of the vehicle body of the air cleaner container to form an air cleaner device.

[Action]

In the present invention, the breather tube is connected to an air cleaner container that draws the outside air from the duct installed at a position where there is usually no risk of submersion and sends the air to the intake side of the engine. The outside air can be sucked into the breather tube without extending to a position where there is no fear of the occurrence of water, and the breather tube can be shortened and moisture and the like can be prevented from entering the breather tube. In addition, by collectively connecting the intake tube, connecting tube, and breather tube to the front wall surface of the vehicle body of the air cleaner container, the connection ports of each tube are concentrated on the wall surface, improving space utilization efficiency and forming. Improves manufacturing workability such as and pipe connection. further,
The connection to the front side wall surface prevents moisture and the like from entering the breather tube due to dew condensation in the air cleaner container during normal operation and maintenance for leaning the rear part of the vehicle body downward. Further, by disposing the air cleaner container at the center of the vehicle body, the breather tube is shortened from any position on the vehicle body to shorten the breather tube, thereby achieving the above object.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

Referring to FIG. 1, a four-wheel buggy vehicle 1 according to the present embodiment includes an air cleaner device 2 according to the present invention and a vehicle body 1 basically composed of a frame 11 in which pipe materials are combined.
It has 0. The vehicle body 10 has a pair of left and right front wheels 12 and rear wheels 13 in the front and rear, and an engine 14 in the substantial center. A fuel tank 15 is provided above the engine 14 so as to cover the upper pipe 11A of the frame 11, and a seat 16 is provided behind the fuel tank 15 so as to be continuous with the fuel tank 15.

A swing arm 21 is swingably supported at a position behind the engine 14 of the frame 11, and the swing arm 21 includes two arms and has a substantially planar shape as shown in FIG. The axle shaft 22 is formed in a V shape and connects the left and right rear wheels 13 at its tip.
A rear axle 22 containing A is attached.

Here, a propeller shaft 21B swingably connected to an output shaft 14A of the engine 14 via a universal joint 14B is inserted into one arm 21A of the swing arm 21 and the axle shaft 2
2A is provided with a final gear 23A, and this final gear 23A is meshed with the broper shaft 21B and can transmit the rotational force of the engine 14 to the rear wheels 13.

The final gear 23A is enclosed in a hermetically sealed gear case 23 provided at the connecting portion between the arm 21A and the rear axle 22, and is provided at the upper end of the case 23 as shown in FIG. One end of the breather tube 24 is connected to the breather valve 24A.

On the other hand, immediately below the seat 16, an air cleaner container 30 is arranged substantially in the center of the vehicle body 10.

As shown in FIG. 3 and FIG. 4, the air cleaner container 30 is supported between two seat rail pipes 11B branching from the vicinity of the rear end of the upper pipe 11A of the frame 11 and has a lid 31A on the upper surface. Clip 31B
The container body 31 is fixed by the above and can seal the inside.

A suction port 32, a delivery port 33, and a breather port 34, which are bulged in a cylindrical shape around the periphery, are formed on a wall surface 31C of the container main body 31 on the front side of the vehicle body 10, and the air passing therethrough can be filtered. A substantially cylindrical air cleaner element 35 is continuously and detachably attached to the delivery port 33.

Here, an intake tube 36 is connected to the suction port 32, and the other end of the intake tube 36 is connected to a rear end opening of the upper pipe 11A. As shown in FIG. 1, a wing-shaped swelling portion 36A is formed on the lower surface on the front end side of the upper pipe 11A, and a duct 36B communicating with the inside of the upper pipe 11A is opened at the front end of the swelling portion 36A. The intake tube 36 is capable of introducing the outside air from the duct 36B and supplying the outside air into the air cleaner container 30.

A connecting tube 37 is connected to the delivery port 33, and the other end of the connecting tube 37 is connected to the carburetor 14B on the intake side of the engine 14, which allows the element 35 to pass through the element 35 by negative pressure generated by the rotation of the engine 14. Then, the air in the air cleaner container 30 can be sucked out.

Further, the other end of the breather tube 24 from the gear case 23 is connected to the breather port 34 so that the air in the air cleaner container 30 and the air in the gear case 23 can mutually flow.

A tubular member made of a flexible material such as flexible plastic or rubber is used for each of the intake tube 36, the connecting tube 37, and the breather tube 24, and the end portion of each air cleaner container 30 side is provided with the suction port 32, the delivery port 32, and the delivery port 32. Exit 33 and breather mouth 34
It is covered with a tightening belt 38 and is prevented from coming off. The connecting tube 37 is
A substantially hook-shaped hook 37A is integrally formed on the surface, and is configured so that the cable 37B and the like inserted in the frame 11 can be locked.

In the air cleaner device 2 of the present embodiment configured as described above, the negative pressure on the intake side due to the rotation of the engine 14 sucks out the air in the air cleaner container 30 via the connecting tube 37 and also through the intake tube 36. The outside air is sucked in through the duct 36B. Further, the temperature inside the gear case 23 rises and falls due to repeated running and stopping of the four-wheel buggy vehicle 1 and the like, which causes a pressure difference between the inside and the outside.
The air inside 3 and the air inside the air cleaner container 30 are circulated to each other to reduce the pressure difference between the inside of the gear case 23 and the outside air.

According to this embodiment, since the air cleaner container 30 sucks the outside air from the duct 36B at the front end of the upper pipe 11A, the breather tube 24 does not suck in water even when traveling in a river or a swamp. The air in the air cleaner container 30 can be supplied to the gear case 23 to eliminate the pressure difference between the inside and outside of the gear case 23, and the gear case 2
It is possible to reliably prevent the intrusion of water and the like into the inside of the container 3.

Further, the breather tube 24 from the gear case 23, which has been conventionally extended to the position corresponding to the duct 36B, can be shortened to the air cleaner container 30, and the handling of the vehicle body 10 can be simplified.

Further, since the air cleaner container 30 is arranged substantially in the center of the vehicle body 10, the breather tube 24 can be shortened as compared to the case where the air cleaner container 30 is extended below the conventional fuel tank 15, or the breather tube 24 is guided from any position of the vehicle body 10. However, it is possible to avoid unnecessary extension.

When the pressure inside the gear case 23 is higher than the outside air, excess air containing vapor such as lubricating oil in the gear case 23 is discharged into the air cleaner container 30 via the breather tube 24 and filtered by the element 35. It can be removed, and the steam or the like can be prevented from being discharged to the outside as it is.

Furthermore, since the breather port 34 and the delivery port 33 that connect the breather tube 24 and the connecting tube 37 are arranged on the wall surface 31C, the air cleaner container 3
Even if dew condensation occurs in the zero area, it is possible to prevent water from entering the gear case 23, the engine 14, and the like.

In addition, the moisture due to the dew condensation is usually the air cleaner container 30.
Although it collects on the bottom surface inside, the water will not be absorbed even when the vehicle body 10 is leaned down with the rear side down during maintenance.
Further, the water does not flow out from the delivery port 33, so that it is possible to reliably prevent water from entering the gear case 23, the engine 14, and the like.

Further, since the bulging portion 36A and the duct 36B are provided in the upper pipe 11A to introduce the outside air into the upper pipe 11A, the intake tube 36 can be shortened, and the structure and piping around the upper pipe 11A can be handled. Etc. can be simplified.

Further, the hook 3 is formed on the surface of the connecting tube 37 made of a flexible material such as flexible plastic or rubber.
7A is integrally molded, so the cable 3 placed near it
7B and the like can be locked together and the cable 37 can be attached by temporarily deforming the hook 37A.
7B and the like can be easily fixed, and the structure and the mounting process can be simplified by omitting the tightening belt and the like which are conventionally separately mounted.

In addition, the suction port 32, the delivery port 33, and the breather port 34
Since both are provided on the wall surface 31C of the air cleaner container 30, it is possible to improve the space utilization efficiency and the connection work efficiency of the tubes 24, 36, 37 by collectively projecting to the periphery of the air cleaner container 30, and molding the container body 31. The manufacturing cost can be reduced.

The present invention is not limited to the above embodiment,
The following modifications are also included.

That is, what communicates with the air cleaner container 30 is not limited to the gear case 23, but may be a tank or the like whose internal pressure changes as the contents such as the fuel tank 15 increase or decrease. Any material that is likely to occur and needs to prevent entry of moisture or the like may be used.

In addition, a breather port 34 provided in the air cleaner container 30.
The number is not limited to one, and may be provided as many as the number of objects to be communicated with the breather tube 24, or a large number may be provided in advance and unnecessary ones may be closed with a blind lid.

Further, the breather tube 24 is not limited to one provided for each communicating object such as the gear case 23, and a plurality of branched tubes may be used to communicate a plurality of objects to one breather port 34. At that time, it may be changed appropriately.

Further, in the above embodiment, the air cleaner device 2 of the present invention is applied to the four-wheel buggy vehicle 1, but it may be a three-wheel buggy vehicle or the like, or it is not limited to the buggy vehicle but to a jeep or the like. It may be applied, that is, if the vehicle travels in a dusty place, the air cleaner device 2 of the present invention may be applied to obtain good results.

Further, the shape of the air cleaner container 30, the material of the breather tube 24, the intake tube 36, the connecting tube 37, etc., the shape and the arrangement of the suction port 32, the delivery port 33, the breather port 34, etc. provided on the wall surface 31C are the same as those in the above embodiment. It is not limited and may be changed appropriately.

(Advantages of the Invention) As described above, according to the air cleaner device of the present invention, it is possible to reliably prevent the entry of water or the like into the breather tube, and shorten the breather tube to facilitate handling. In addition, manufacturing workability and space utilization efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the present invention, FIG. 2 is a top view showing a part of the embodiment, FIG. 3 is a perspective view showing an essential part of the embodiment, and FIG. It is an exploded perspective view showing the important section of an example. 2 ... Air cleaner device, 10 ... Car body, 14 ... Engine,
14B ... Carburetor on the intake side of the engine 24 ... Breather tube, 30 ... Air cleaner container, 31C ... Wall surface on the front side of the vehicle body, 35 ... Element, 36 ... Intake tube, 36B ... Duct for introducing outside air, 37 ... Connecting tube.

Claims (1)

[Scope of utility model registration request] 1. An air cleaner container provided on the intake side of an engine is arranged substantially in the center of a vehicle body, and connected to a connecting tube continuing to the intake side of the engine, an intake tube continuing to a duct for introducing outside air, and other parts. An air cleaner device in which a breather tube is collectively connected to a front side wall surface of a vehicle body of the air cleaner container.