JP2534113Y2 - Drain hole structure for intake system components - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain hole structure for an intake system component such as an air cleaner.

[0002]

2. Description of the Related Art When a vehicle travels on a flooded road, or during heavy rain, water is sucked together with the air sucked into the air cleaner. If the water sucked into the air cleaner is not removed by the filter element, an engine trouble may occur. Therefore, holes for draining water are formed in the bottom wall of the volume chamber of the air cleaner or the lower wall of the duct, and the water sucked into the air cleaner is discharged to the outside.

However, if a hole is made in the bottom wall of the volume chamber or the lower wall of the duct, when the vehicle runs on a flooded channel, the water scooped up by the tires violently hits the installation location of the drain hole, and the water is removed. However, there is a danger that the water will penetrate through the drain hole.

[0004] For this reason, conventionally, a drain hole structure of an air cleaner has been proposed in which water does not enter the air cleaner through the drain hole.

[0005] Such a drainage hole structure of a conventional intake system component is disclosed in, for example, FIG. 6 or FIG.
(See Japanese Utility Model Laid-Open Nos. 56-150856 and 62-36257).

That is, in the conventional example shown in FIG.
A drain valve 23 is arranged in a drain hole 22 formed in the bottom wall 21, and the drain valve 23 is opened by the weight of the water accumulated in the air cleaner to drain the internal water. Prevents intrusion into the interior.

In the conventional example shown in FIG.
A pipe 25 is connected to the lowest part where 4 is inclined so as to drain water and prevent water from entering from the outside.

[0008]

However, in such a conventional water draining hole structure for an intake system part, a water collecting place is provided at several places at the bottom of the volume chamber, and a valve which opens and closes by its own weight is installed. I do. Alternatively, the bottom wall of the volume chamber is inclined and a pipe is attached to the lowest part thereof. And so on,
There has been a problem that the structure is complicated and the cost is disadvantageous.

The present invention has been made in view of such a conventional problem, and has a simple structure and a water drain hole of an intake system component such as an air cleaner which does not allow water to enter the inside through the water drain hole. It is intended to provide structure.

Therefore , in the present invention , the bottom wall of the volume chamber is combined.
It is made of a synthetic resin, and has
In the intake system parts where the heavy bead is integrally formed
Along the bead while keeping a slight distance from the bead.
To form an elongated rectangular through hole that opens
The bead surrounds the lower part of the through hole and the surrounding three sides.
The protruding part, which has only the opening facing the
The drain portion was formed integrally with the bottom wall .

[0011]

[Function] When running in the rain, inside the volume chamber of an air cleaner or the like
The water sucked in along with the intake air flows through the through holes in the bottom wall and
And through a continuous opening therefrom, between the bead and the outside.

[0012] flooded road or the like, raised oysters in the tire
Even if the drained water falls on the drain, the water
Impacts on the inside and does not reach the through hole,
Ingress is blocked.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG.
4 to 4 are views showing an embodiment of the present invention applied to an air cleaner.

First, the configuration will be described. FIG. 1 is a plan view of a bottom surface of the air cleaner viewed from below, and FIG. 2 is a side sectional view. On the bottom wall 2 of the air cleaner 1, two water draining portions 3 are provided. A bead 4 is provided on the bottom wall 2. The beads 4 are provided radially and concentrically, and a mounting portion 5 for mounting the air cleaner 1 on the body of the intake chamber is provided at the center of the annular bead.

The drain portion 3 is formed in the bottom wall 2 as shown in FIG. 1 showing the NN section and FIG. 4 showing the TT section in FIG. A drain hole 8 is formed by the through hole 6 and a first protrusion 7 that covers the through hole 6 and protrudes from the bottom wall 2. First protrusion 7
Has an opening 9 only in one direction, and the drain hole 8 is
3a, three sides are surrounded by a wall 7b.

A second protruding portion 10 is provided so as to protrude from the bottom surface facing the opening 9 of the first protruding portion 7. In this embodiment, a part of the bead 4 is used in the case of FIG. 3 and a bead continuous with the side wall 11 in the case of FIG.

Next, the operation will be described with reference to FIG. The water sucked together with the intake air and stored in the air cleaner 1 flows through the drain hole 8 as shown by an arrow E in FIG.

When a vehicle runs on a flooded road, for example, water that has collided with a dash lower swept up by tires,
Water splashes from all sides, such as splashing and splashing heavily on the drain section 3 of the air cleaner 1.

In such a case, as shown in FIG. 5, when water is applied from the direction of arrow A, the water collides with the wall 7a of the first projecting portion 7, so that water enters the inside through the drain hole 8. Will be blocked. If water is applied from the direction of arrow B, the first
The intrusion into the inside is prevented by the wall 7b of the protrusion 7. When water is applied from the direction of the arrow C, the second protrusion 10 prevents entry into the inside. In this manner, the drain hole 8 is surrounded by the upper wall 7a, the side wall 7b of the first protrusion 7 and the second protrusion 10 around the first protrusion 7, so that the water is drained from the drain 3 in any direction. Even if it is hung, the intrusion of water into the air cleaner 1 is prevented.

Although the above embodiment has been described with respect to an air cleaner, the present invention is not limited to an air cleaner, but can be applied to other intake system components such as an intake resonator.

[0021]

[Effect of the invention] As is clear from the above description,
According to the above, the water sucked into the intake system components is reliably discharged
At the same time as possible, water from the outside
Intrusion can be prevented. And the synthetic resin bottom
Beads provided for reinforcement on the wall prevent water from entering.
Since it is used as a baffle to stop,
Only needs to be formed with the protrusion with the through-hole.
The configuration becomes simple.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention as viewed from below a bottom surface.

FIG. 2 is a side sectional view showing one embodiment.

FIG. 3 is a sectional view showing an NN section of FIG. 1;

FIG. 4 is a sectional view showing a TT section of FIG. 1;

FIG. 5 is a sectional view illustrating the operation of the present invention.

FIG. 6 is a sectional view showing a conventional example.

FIG. 7 is a sectional view showing another conventional example.

[Explanation of symbols]

 2 ... Bottom wall 3 ... Water drain 4 ... Bead 7 ... First protrusion 8 ... Water drain 9 ... Opening 10 ... Second protrusion

Claims (1)

(57) [Scope of request for utility model registration] The bottom wall of the volume chamber is made of a synthetic resin.
Reinforced beads projecting like a wall are integrated with the bottom surface of the bottom wall
In the intake system part formed in the above,
Elongate opening along the bead with slight spacing
While forming a rectangular through hole,
Opening surrounding the bead and facing the above bead
Only the protrusion that opens to the side is integrated with the bottom wall
A drain hole structure for intake system parts characterized by being formed .