JPH0628326Y2 - Structure of the connection part of the vehicle air conditioning duct - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to an improvement of a connecting portion of a vehicle air conditioning duct.

2. Description of the Related Art A vehicle air-conditioning duct is not integrally molded from the beginning over its entire length, but is generally divided into several parts, which are then combined and integrated.

As shown in FIG. 4 and FIG. 5, in the case of the rear heat duct, the outlet duct 1 is molded separately from the main duct 2, and they are attached at the edge portions by using an adhesive or the like at the time of assembling. Butt and joined.

Further, as shown in FIG. 6, the end portion 3 of the outlet duct 1 is
Is formed to be small, and the end portion 3 has main ducts 1 and 2
It may be integrated by being fixed by being inserted into.

Further, in FIGS. 4 to 6, reference numeral 5 denotes a rectifying blade.

A plurality of blades 5 are provided in the outlet duct 1 along the axial direction thereof.

As a means for joining ducts, there is one disclosed in Japanese Utility Model Laid-Open No. 55-36027.

This is because the upper end of the duct is inserted into the mounting hole of the instrument plate from the inside, the grill with a flange is inserted into the inner hole of the upper end of the duct from the outside of the instrument plate, and the self-hinge is inserted into the lower end of the grill. The mounting piece integrally molded with the duct is inserted into the engaging hole formed in the wall surface of the duct, bent, and fixed to the inner surface of the instrument panel.

Problems to be Solved by the Invention In the case of the conventional example shown in FIGS. 4 and 5, there is a drawback in that positioning is troublesome when assembling the ducts 1 and 2 with each other. Further, since the blade 5 is relatively short, the obtained rectifying effect is naturally small.

In the case of the one shown in FIG. 6, there is a drawback that the cross-sectional area of the duct becomes small at the joint portion and the rectifying effect is lowered.

In the case of Japanese Utility Model Laid-Open No. 55-36027, when connecting the ducts to each other, it is necessary to insert the mounting piece into the engaging hole, which requires labor and time. Further, in this case, since the blade is not provided, the rectifying effect cannot be expected.

Means for Solving the Problems In order to solve the above problems, the present invention has an end portion of one duct inserted into an end portion of the other duct, and a rectifying blade is provided in one end portion of the duct. In the structure of the connection portion of the vehicle air-conditioning duct where is provided, the end of the duct on the inserted side is formed by expanding by a dimension substantially the same as the thickness of the end of the insertion side duct, and the blade is A configuration is adopted in which the duct is formed so as to project outward from the end of the duct and enter the other duct.

Action The end of one duct is inserted and integrated with the end of the other duct.

At that time, the blade projects outward from the end of the duct, and the projecting portion guides the fitting direction between the ducts. Therefore, the ducts can be joined easily and quickly.

In addition, since the end of the duct to be inserted is expanded and formed by approximately the same dimension as the thickness of the end of the duct to be inserted, when the ducts are joined together as described above, There is no reduction in the cross-sectional area and therefore no turbulence in the air flow.

In addition, the blade will also enter the other duct and extend longer in the duct. Therefore, the rectification effect is remarkably improved.

Embodiment An embodiment of the present invention will be described with reference to FIGS.

In these drawings, reference numeral 6 indicates a main duct, reference numeral 7 indicates an outlet duct, and both of them represent a rear heat duct 8
It constitutes the downstream part of the.

The main duct 6 has a rectangular cross section, and its end portions 9 are located below the driver seat 10 and the passenger seat 11, respectively.

The outlet duct 7 is also formed in a cross-sectional shape similar to that of the main duct 6, but its length is short, and the end portion 12 on the joint side is approximately the same as the wall thickness of the end portion 9 of the main duct 6. It is formed by expanding only.

In this case, the expansion formation is stopped at the upper and lower sides of the duct, and the left and right sides are formed wide over the entire length of the duct.

However, the left and right side portions may be expanded only at the joint portion (not shown).

The expansion forming portion may be provided on the main duct 6 side and may not be provided on the outlet duct 7 side.

As a result, when the end portion 9 of the main duct 6 is inserted into the expanded end portion 12 of the outlet duct 7, the interiors of both ducts 6 and 7 communicate with each other as shown in FIG. The cross-sectional area does not decrease in the part.

Therefore, the air coming from the main duct 6 reaches the air outlet duct 7 without reducing the air volume and without being disturbed.
The air will blow out from the air outlet 13 to the rear of the vehicle compartment.

In FIGS. 1 and 2, reference numeral 14 indicates a rectifying blade.

A plurality of blades 14 are arranged in the outlet duct 7 along the central axis thereof, and project outward from the duct end 12.

The protruding portion 15 protruding outward is set to have a height slightly smaller than the vertical dimension of the passage of the main duct 6, and is set to a length such that it can enter the main duct 6 to a predetermined depth.

Therefore, when the end portion 9 of the main duct 6 is inserted into the end portion 12 of the outlet duct 7 as described above, first, the protruding portion of the blade 14
Since 15 will enter into the main duct 6, the protrusion
The 15 guides the fitting direction between the ducts 6 and 7.

When the projecting portion 15 has completely entered the main duct 6, the fitting of the end portions 9 and 12 of the ducts 6 and 7 is completed.

EFFECTS OF THE INVENTION Since the present invention has the above-mentioned structure, the blade can be used as a guide when joining ducts to each other, and thus the assembling property can be made excellent.

In addition, the joint portion does not cause a reduction in the cross-sectional area of the ventilation passage. Therefore, the ventilation is smooth and the air volume does not decrease.

In addition, the blades pass through the junction and penetrate from one duct deep into the other, thus extending longer into the duct. For this reason, the air rectification effect can be further enhanced in combination with the uniformity of the cross-sectional area.

Furthermore, since the end of the duct on the insertion side is sandwiched between the blade and the end of the duct on the inserted side, there is an effect that the coupling force between the outsides of the ducts is increased accordingly.

[Brief description of drawings]

1 to 3 show the case where the structure of the connecting portion according to the present invention is applied to a rear heat duct. FIG. 1 is a sectional view taken along the line I-I of FIG. 3, and FIG. 2 is FIG. Fig. 3 is an exploded perspective view of the portion shown, Fig. 3 is a perspective view of the entire rear heat duct, Figs. 4 to 6 show a conventional example, Fig. 4 is an exploded perspective view of a connecting portion, and Fig. 5 is a diagram showing the same. Sectional view similar to FIG. 1 of the connection portion,
FIG. 6 is a sectional view of another example. 6: Main duct, 7: Air outlet duct, 8: Rear heat duct, 9, 12: End portion, 14: Blade, 15: Projection portion.

Claims (1)

[Scope of utility model registration request] 1. A structure of a connecting portion of a vehicle air conditioning duct in which an end portion of one duct is inserted into an end portion of the other duct, and a rectifying blade is provided in an end portion of one of the ducts. In, the end of the duct on the inserted side is expanded and formed by a dimension substantially the same as the wall thickness of the end of the duct on the insertion side, and the blade protrudes from the end of the duct into the other duct. The structure of the connection portion of the vehicle air-conditioning duct, characterized in that the structure is formed to have a length that allows penetration.