JPH0355804Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an air cleaner installed upstream of an intake system such as a carburetor, and particularly relates to an air cleaner body and a cleaner element installed in the air cleaner body. This invention relates to a waterproof structure for air cleaners that prevents rainwater from entering the inside of the equipment.

[Prior art and its problems] As disclosed in, for example, Japanese Unexamined Utility Model Publication No. 53-511502, an air cleaner has a lid attached via a gasket to the opening of a case that houses a cleaner element. There is something.

On the other hand, in air cleaners installed in vertical shaft engines, etc., a groove is formed around the outer circumference of the cleaner body connected to the intake system such as a carburetor, and the open end of the cover that covers the cleaner element is inserted into this groove. There are some that are designed to be attached and fixed. This type of air cleaner has problems in that rainwater and the like tend to accumulate in the grooves, and furthermore, this rainwater tends to enter the inside of the air cleaner.

[Purpose of the invention] This invention was made in view of the above circumstances.
An object of the present invention is to provide a cleaner element and a waterproof structure for an air cleaner that can completely prevent rainwater from entering between the air cleaner main body and the cleaner element.

[Means for Solving the Problems] The waterproof structure of the air cleaner according to the present invention includes an air cleaner body in which a groove having a U-shaped cross section is formed around the opening end, and a drain hole is formed in the groove; In an air cleaner comprising a cleaner element whose bottom surface is supported by a support plate, and a cover whose end surface is bent outward and which covers and presses the cleaner element and is attached to the air cleaner main body, on the outer periphery of the support plate, The air cleaner is bent upward and is provided with an erected surface that overlaps the inner surface of the cover, and the end surface of the cover is positioned in the groove of the air cleaner main body at a position below the overlapping portion of the erected surface. The main body is provided with an upper end that is in close contact with the support plate through a gasket inside the groove, and rainwater accumulated in the groove of the air cleaner body is drained from the drain hole, and it also prevents water from entering the interior. is prevented by the packing and the upright surface of the support plate.

[Embodiments of the invention] Hereinafter, embodiments of the invention will be described with reference to the drawings.

The drawings relate to one embodiment of the present invention, in which FIG. 1 is a partially sectional plan view of an air cleaner, FIG. 2 is a side sectional view of the air cleaner, and FIG. 3 is a bottom view of the air cleaner.

In these figures, reference numeral 1 denotes an air cleaner main body that is fixed to an intake system such as a carburetor (not shown). The air cleaner main body 1 is formed into a box shape with an open top, and a hole 1b is bored in the center of the bottom 1a. This hole 1b communicates with the barrel of the vaporizer. In addition, the code|symbol 9 is a packing.

Further, a groove 1c having a U-shaped cross section is bent around the open end of the air cleaner body 1. As shown in FIG. 3, a plurality of horizontally long drainage holes 1d are bored in this groove 1c at predetermined intervals.

Further, a hook 1e is bent on one side of the outer periphery of the air cleaner body 1, and a stopper 2 is attached to a portion facing the hook 1e.

On the other hand, numeral 3 is a cleaner element. The element frame 3a of this cleaner element 3 is formed into a conical shape having a plurality of ventilation holes 3b. An inner surface 3f of a support plate 3c formed in a ring-shaped groove is welded to the lower end of the element frame 3a.

Further, a step portion 3e is formed on the bottom peripheral edge of the support plate 3c, and a standing surface 3 is formed on the outer periphery of the step portion 3e.
h is bent upward, and a gasket 5 installed at the upper end 1f of the air cleaner main body 1 is adhered to the back surface of the stepped portion 3e. The gasket 5 is made of an elastic member such as shield rubber that is waterproof, oil resistant, and gas resistant.

Further, a wave-shaped filter element 4a is attached to the circumferential surface of the element frame 3a, and a urethane filter element 4b is attached to the outer circumferential surface.
is installed. Furthermore, the lower portions of these are installed in the grooves of the support plate 3c. Further, a filter support plate 3d is fitted onto the upper end of the filter element 4a.

On the other hand, the reference numeral 6 is a cover. This cover 6
is in the shape of a lid that covers the cleaner element 3, and the lower open end 6a is fitted into the groove 1c of the air cleaner main body 1;
An outer erected surface 3h of the support plate 3c is arranged on the inner surface of the cover 6 so as to be able to overlap. The open end surface 6a of the cover 6 is positioned in the groove 1c of the air cleaner body 1 at a position below the overlapping portion of the upright surface 3h. Further, this end surface 6a is formed to be slightly bent outward, so that when assembling, the end surface 6a is formed on the outer standing surface 3h of the support plate 3c.
the cleaner element 3 at the same time as the installation.
The center of the image is now exposed.

In addition, an intake duct 7 is provided on the circumferential surface of the cover 6.
A locking hole 6b that is inserted into the hook 1e of the air cleaner main body 1, and a stopper 8 that is engaged with the stopper 2 are provided.

Further, the upper surface inside this cover 6 is adapted to press against the filter elements 4a and 4b of the cleaner element 3.

Next, the operation of the embodiment with the above configuration will be explained.

To explain the assembly procedure, first, the gasket 5 attached to the support plate 3c of the cleaner element 3 is placed on the upper end 1f of the air cleaner main body 1.

Next, the locking hole 6b of the cover 6 is engaged with the hook 1e of the air cleaner main body 1, and the stopper 2 is fitted into the stopper 8 provided on the opposite side. Then, the end surface 6a of the cover 6 enters the groove 1c of the air cleaner main body 1 and is positioned. Further, the upright surface 3h of the support plate 3c of the cleaner element 3
is guided and positioned by the inner surface of the end surface 6a.

Further, the upper surface of the cover 6 presses the filter elements 4a and 4b of the cleaner element 3. As a result, the support plate 3c of the cleaner element 3
is closely attached to the upper end 1f of the air cleaner main body 1 via a packing 5.

When rainwater falls on the air cleaner assembled in this manner, the rainwater flows into the groove 1c and is discharged from the drain hole 1d formed in the groove 1c. At this time, since the packing 5 has water resistance, the air cleaner body 1 and the cleaner element 3
Rainwater will not enter the inside of the device between the

Furthermore, since the support plate 3c is provided with an upright surface 3h, rainwater or the like that attempts to enter the filter element 4b is completely blocked here.

[Effects of the invention] As explained above, according to the invention, since a drainage hole is provided in the groove formed around the air cleaner body, rainwater etc. can be naturally drained from this drainage hole. , can prevent infiltration into the interior.

Further, an erected surface is provided on the outer periphery of the support plate that is bent upward and overlaps with the inner surface of the cover, and the end of the cover is placed in the groove of the air cleaner main body at a lower position by the overlapping portion of the erected surface. Since the cleaner element is positioned in the same direction, it is possible to prevent rainwater and the like from entering the cleaner element.

Furthermore, since the air cleaner main body is provided with an upper end portion that is in close contact with the support plate through the packing inside the groove, rainwater or the like will not enter the interior from between the air cleaner main body and the cleaner element.

As a result, waterproofness is fully guaranteed and product reliability is greatly improved.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which FIG. 1 is a partially sectional plan view of an air cleaner, FIG. 2 is a side sectional view of the air cleaner, and FIG. 3 is a bottom view of the air cleaner. 1...Air cleaner body, 1c...Groove, 1d...
...Drain hole, 3...Cleaner element, 3C...
...Support plate, 3h... Standing surface, 5... Packing, 6... Cover, 6a... Opening end.

Claims (1)

[Scope of Claim for Utility Model Registration] An air cleaner body having a groove with a U-shaped cross section formed around the opening end and a drain hole bored in the groove, a cleaner element whose bottom surface is supported by a support plate, In an air cleaner comprising a cover having an end surface bent outward and attached to the air cleaner main body by covering and pressing the cleaner element, the support plate is bent upward on the outer periphery of the support plate and is formed on the inner surface of the cover. An overlapping standing surface is provided, and the end surface of the cover is positioned in the groove of the air cleaner body at a position below the overlapping portion of the upstanding surface, and the cover is further attached to the air cleaner body through a packing inside the groove. A waterproof structure for an air cleaner, characterized in that an upper end portion is provided in close contact with the support plate.