JP3850586B2 - Inlet water drain chamber - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an intake water drain chamber that removes moisture in intake air taken into an intake system of a vehicle engine.
[0002]
[Prior art]
When air containing moisture such as rainwater is introduced into the intake system of the vehicle engine, the engine performance and the like are adversely affected. Therefore, as shown in FIG. 7, the intake air connected to the air cleaner 15 in the rear engine room 11 of the bus 10 A draining chamber 12 is installed. The intake water draining chamber 12 has an outer case 13 having an opening 14 only on one side surface, and is opposite to the opening 14 of the outer case 13 as shown in FIG. It has an inner and outer double structure having an opening 17 only on the side and an outer box 13 and an inner box 16 having a space in the outer box 13.
[0003]
As shown in FIGS. 10 and 11, the intake water draining chamber 12 having the inner / outer double structure is such that the air sucked from the opening 14 of the outer box 13 is first on the side opposite to the opening 17 of the inner box 16. The moisture contained in the air hits the wall surface and is dropped as water droplets, and the air is further divided into left and right by the inner box body 16 and flows in the space between the outer box body 13 and the inner box body 16, and the opening of the outer box body 13 The moisture contained in the air hits the wall opposite to the wall 14 and is dropped as water droplets. The air from which the moisture has been removed is introduced into the air cleaner 15 through the duct 18, and the water accumulated at the bottom of the outer box 13 is drawn from the drain cylinder 20. Discharge.
[0004]
The intake water draining chamber includes an air rotation method for centrifuging moisture in the chamber based on the air flow rate. The air splitting method by the intake / draining chamber 12 having the inner and outer dual structures performs efficient intake water draining. Yes.
[0005]
[Problems to be solved by the invention]
In the conventional intake water draining chamber 12, the outer box body 13 and the inner box body 16 are all iron plates, and are constituted by many members as shown in FIG. That is, the outer box body 13 is a body member 13a, one upper plate member 13b having an opening 14, four members of a lower plate member 13d and the other side plate member 13c that block the lower side of the one upper plate member 13b. The inner box body 16 includes three members: a body member 16a, a frame member 16b for maintaining the strength of one opening portion 17, and a side plate member 16c that closes the opposite side to the one opening portion 17, and the outer box body 13 The inner box 16 is composed of seven members for convenience. In addition, a through hole 19 of the duct 18 is processed in the bottom of the inner box body 16.
[0006]
Therefore, it is not easy to manufacture these many members, and many assembly steps for connecting the respective members by welding or the like are required, resulting in high costs. Further, since a thin steel plate is used due to weight reduction, the wall surface of the chamber 12 vibrates due to improvement in rigidity and pulsation of intake negative pressure, etc., so that drumming is generated. 13c is equipped with several iron angles 21a and 21b and reinforcing iron plates (not shown). In particular, the number of parts and the number of assembling steps are increased, resulting in high costs and the meaning of weight reduction by thin iron plates. It is halved. In addition, the coating process to apply anti-rust coating.
[0007]
SUMMARY OF THE INVENTION An object of the present invention is to provide an intake water draining chamber having functions equivalent to those of a conventional air dividing system that is easy to manufacture, light weight, and improved in rigidity.
[0008]
[Means for Solving the Problems]
To achieve the above object, the present invention is an internal / external dual chamber for removing moisture in intake air taken into an intake system of an engine, having an opening only on one side and a duct on the bottom. An inner box body blow-molded by the provided resin material, and an opening portion only on the side opposite to the opening portion of the inner box body, a drain cylinder at the bottom, penetrating the duct, and blow molding by the resin material Thus, the inner box body is provided with a space around the inner box body, and the outer box body is integrated with the inner box body.
[0009]
In order to achieve the above object, the present invention is an internal / external dual chamber for removing moisture in intake air taken into an intake system of an engine, having an opening only on one side surface, An inner box body that is blow-molded by a resin material provided with a duct, and has an opening only on the opposite side of the opening of the inner box body. A concave bead that abuts or fuses to the inner box on the wall surface of the outer box is formed by an outer box integrated with the inner box with a space around the inner box by blow molding. It is formed.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. 1 to 3, reference numeral 1 denotes an intake water draining chamber according to the present invention, FIG. 1 is a front view, FIG. 2 is a view taken in the direction of arrow A in FIG. 1, and FIG. The main components of the intake water draining chamber 1 are composed of an outer box 2 and an inner box 5. An example of the specific configuration will be described.
[0011]
[Example 1]
As shown in FIGS. 4 to 6, the inner box body 5 is blow-molded by a resin material having an opening 6 only on one side surface and a duct 7 connected to an air cleaner 15 shown in FIG. 8 on the bottom. It is a thing. A plurality of convex ribs 23 are formed on the body of the inner box body 5 to ensure rigidity.
[0012]
As shown in FIGS. 1 to 3, the outer box 2 has an opening 3 only on the side opposite to the opening 6 of the inner box 5, and provides a space around the inner box 5. The inner box body 5 is integrated by blow molding with a resin material having the through-hole 4 of the duct 7 and the drain cylinder 20 at the bottom. A plurality of convex ribs 22 are formed on the body of the outer box body 2 to ensure rigidity.
[0013]
[Example 2]
With respect to the intake water draining chamber 1 having the above configuration, as shown in FIGS. 1 to 3, a concave bead 8 is formed on the wall surface of the outer box body 2, and the tip of the concave bead 8 is connected to the inner box body 5. It is a contact or fusion. As the wall surface of the outer box 2, both the front wall and the back wall are effective, but either one of them may be used.
[0014]
[Production example]
As an example of manufacturing a resin intake water draining chamber 1 having an inner and outer double structure according to the present invention, first, an inner box body 5 having an opening 6 only on one side surface and a duct 7 on the bottom is blown with a resin material. Mold. Next, with the inner box 5 as a core, the outer box 2 having the opening 3 only on the side opposite to the opening 6 of the inner box 5 and having a drain cylinder 20 at the bottom is used as the inner box. 5 is obtained by blow-molding integrally with the inner box body 5 with a resin material so as to surround the inner box body 5 by forming a space between the inner box body 5 and the inner box body 5.
[0015]
[Action]
The air / water draining action of the internal / external double-structured resin intake / water draining chamber 1 according to the present invention is similar to the air dividing system of the conventional steel plate intake / water draining chamber 12 shown in FIGS. The air sucked from 3 first hits the wall surface on the opposite side of the opening 6 of the inner box body 5 and drops the moisture contained in the air as water droplets, and the air is further divided into left and right by the inner box body 5. It flows through the space between the outer box body 2 and the inner box body 5, hits the wall surface on the opposite side to the opening 6 of the outer box body 2, drops water contained in the air as water droplets, and removes the air from the duct. 7 is introduced into the air cleaner 15 shown in FIG. 8, and water accumulated at the bottom of the outer box body 2 is discharged from the drain cylinder 20.
[0016]
Further, the concave bead 8 is formed on the wall surface of the outer box body 2 according to the second embodiment, and the tip 9 of the concave bead 8 is brought into contact with or fused with the inner box body 5, so that the formation of the concave bead 8 itself is outside. In addition to improving the rigidity of the box body 2, the end 9 of the concave bead 8 is brought into contact with or fused with the inner box body 5, so that the wall surface of the outer box body 2 is formed by the concave bead 8. Thus, the rigidity of the outer box body 2 is synergistically improved. As a result, the occurrence of drumming in which the wall surface of the outer casing 2 vibrates due to the pulsation of the intake negative pressure is reliably prevented.
[0017]
【The invention's effect】
As described above, according to the present invention, all of the intake and drainage chambers of the inner and outer dual structures, which are the outer box body and the inner box body, can be obtained by blow molding integrally with a resin material. In this way, a large number of man-hours for manufacturing a large number of parts and assembling them are not required, and the manufacturing man-hours can be reduced and provided at low cost.
Further, the weight is reduced by the resin material, and in particular, a concave bead is formed on the wall surface of the outer box body, and the rigidity of the outer box body is improved by a configuration in which the tip of the concave bead contacts or fuses with the inner box body. At the same time, the occurrence of drumming in which the wall surface of the outer box body vibrates due to the pulsation of the negative intake pressure can be prevented without attaching an iron angle or a reinforcing iron plate that increases in weight as in a conventional steel plate intake water draining chamber.
Furthermore, since the entire intake water draining chamber is made of resin material, there is no need to apply anticorrosion coating unlike conventional steel plate intake water draining chambers, and the anticorrosion painting work process can be reduced, providing corrosion resistance and durability. An intake water draining chamber can be provided.
[Brief description of the drawings]
FIG. 1 is a front view of the present invention. FIG. 2 is a view from arrow A in FIG. 1. FIG. 3 is a view from arrow B in FIG. FIG. 6 is a rear view of a bus equipped with an intake water draining chamber. FIG. 8 is a perspective view showing a conventional intake water draining chamber mounted state. FIG. 10 is a cross-sectional view showing the intake water draining action of the conventional and the intake water drain chamber according to the present invention. FIG. 11 is a cross-sectional view taken along the line EE of FIG.
DESCRIPTION OF SYMBOLS 1 Intake water draining chamber 2 Outer box body 3 Outer box part 4 Duct penetration part 5 Inner box body 6 Inner box body opening part 7 Duct 8 Concave bead 9 Concave bead tip 20 Drain cylinder 22 Convex bead 23 Convex bead

Claims (2)

Inner / outer dual chamber for removing moisture in the intake air taken into the intake system of the engine, an inner box body that has an opening only on one side and is blow-molded with a resin material having a duct at the bottom And having an opening only on the side opposite to the opening of the inner box body, having a drain tube at the bottom, penetrating the duct, and providing a space around the inner box body by blow molding with a resin material. An intake water draining chamber characterized by comprising an outer box integrated with the inner box. Inner / outer dual chamber for removing moisture in the intake air taken into the intake system of the engine, an inner box body that has an opening only on one side and is blow-molded with a resin material having a duct at the bottom And having an opening only on the side opposite to the opening of the inner box body, having a drain tube at the bottom, penetrating the duct, and providing a space around the inner box body by blow molding with a resin material. An intake water draining chamber comprising an outer box body integrated with the inner box body, and a concave bead that contacts or fuses with the inner box body is formed on a wall surface of the outer box body.

Images