JPS58190558A - Air cleaner - Google Patents

Abstract

PURPOSE:To prevent dirty water adhering to a drain hole from reaching to stain an element, by further providing a shield member covering the drain hole to the upper of the drain hole in an air cleaner in which the drain hole is provided to the bottom part of a case containing the element. CONSTITUTION:The inside of a case (a) is divided by a partition 1 into two chambers a1, a2, and an intake air duct 2 is connected to the first chamber a1 further an element 3 is housed in the chamber a1. Then intake air flowing in the element 3 through a through hole 7 provided to the partition 1 flows into the second chamber a2. While a drain hole 8 is provided to a bottom wall of the chamber a1. Here the upper of the hole 8 is covered by a shield member 9. In this way, when muddy water adhering to the hole 8 is scattered into the chamber a1 by intake negative pressure of an engine, scattering of muddy water is blocked by the member 9 to prevent the muddy water from reaching the element 3. Accordingly, a stain or the like of the element 3 due to muddy water can be prevented.

Description

[Detailed description of the invention] The present invention relates to an air cleaner for motorcycles and the like.

2. Description of the Related Art Conventionally, some air cleaners for motorcycles are provided with a drain hole at the bottom of a case that houses an element for discharging water droplets that have condensed inside the case.

The water drain hole has a small diameter to prevent dust from entering the case and impairing the function of the air cleaner.

On the other hand, in a motorcycle, an air cleaner is usually arranged on one side of the seat and above the rear arm.

However, with this arrangement, when the motorcycle is running, the muddy water thrown up by the rear wheel hits the rear arm and bounces off from there to the air cleaner, which can adhere to the drain hole at the bottom of the case. be.

Sewage adhering to the drain hole does not drip due to the small diameter of the drain hole due to its round surface tension and blocks both holes.

Then, when the engine's negative pressure acts inside the nurse,
The muddy water may burst due to the negative pressure and rush into the case from the drain hole, staining the elements inside the case.

The purpose of the present invention is to prevent the element from being soiled by muddy water that flows into the case from the water drain hole, and a shielding member covering both holes is provided above the water drain hole. ◎Explaining an example of implementing the present invention by rotation, in the figure (→ is a case made of synthetic resin, the inside of which is partitioned into an upstream side and a downstream side by a partition wall (1),
The two wealth, namely the first house (-,) and the second house (a-wato), are divided into sections.

The large-volume first chamber C-,>K has a round intake duct (2) that takes in outside air! I! I, and the element (
2) is accommodated.

The element (3) is supported at the middle part KTo of the first chamber (-,,) with one end in contact with the partition wall 0), and the other end is locked with the element holder (6) and supported by the support 5 (2). ) is elastically supported via a leaf spring (2).

(7) is the through hole provided in the W Ml (1) K)
, the intake air that has passed through the first hole (to the element via η) flows into the second hole (-).

(8) is a water hole provided in the bottom wall of the bottom layer of the case (-).

This drainage hole body is for discharging the water droplets condensed in the irises 1 chamber (-,) to the outside, and the upper part is the shielding member (
2) is covered.

Shielding member Φ) The upper wall (
t&) and both sides) 11 down JIl room (&1)/)
The partition wall (?
1) Drainage hole (extends horizontally to a position where there is a large gap between the layers).

On the other hand, the above 2 m(&t) is connected to a vaporizer (not shown) via a rubber duct! At the same time, boo-pai gas flows in through the inflow pipe shaft and is sent together with intake air from the carburetor to an engine (not shown).

Therefore, the oil in the pipe gas adheres to the second chamber (&), but the oil passes through the same chamber (-wall surface and the gap Ilα) and the gap (b) between those two walls. 9. The shielding member (!) inside the holding part (2) in contact with liI (
b) The kit is attached and held.

■Hiro: This is a discharge pipe for discharging oil that can no longer be held in the Smenzie to the outside of the case.

As a result, muddy water that adhered to the drain hole (6) and blocked the opening (6) due to surface tension of the air cleaner leaked to the first floor! As shown by the arrow <1> in the iA and Ha diagrams, the muddy water jumps into the lil chamber (&,) due to the negative pressure of the engine, and immediately after that, it hits the shielding member (9) and is blocked, reaching the element (tilt). Never.

The shielding effect of the shielding member (9) is as follows:
b), the upper wall (P&) directly above the drain hole (2) has no protection against muddy water if it is thrown in any direction.
To prevent muddy water from coming off the shielding member (2) and scattering.

Furthermore, since one end of the shielding member (9) is blocked by the outer wall of the partition wall (1), that is, the holding part (B) that is integrated with the shielding member (44), the muddy water is also prevented from scattering by that wall surface. can.

And the shielding member 11j K? The muddy water then flows down from the same member (9) and is discharged from the case (→outside).

Since the present invention is constructed as a temporary fixing, the muddy water that jumps into the case from the drain hole immediately hits the shielding member and is blocked, preventing it from reaching the element, thereby preventing the element from becoming dirty.

[Brief explanation of the drawing]

Figure 1i1 is a vertical cross-sectional view showing the air cleaner of the present invention, Figure 2 is a (1)-(I) helical cross-sectional view of Figure 1, and Figure 3 is an enlarged cross-sectional view of Figure 1. It is. Also in the diagram

Claims (1)

[Claims] This air cleaner has a water drain hole provided at the bottom of a case that houses an element, and a shielding member that covers both holes above the water drain hole.