JPH0143285Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a ventilation duct for an automobile that is easy to assemble.

[Background of the idea]

As a type of conventional automobile ventilation duct, there are, for example, those shown in FIGS. 2 to 6.
The ventilation duct 1 blows air toward the windshield (not shown) of the automobile and the window glass of the door on the driver's seat side and the passenger's seat side, and is attached to the body of the automobile. The duct 1 includes a central air outlet 3 that is located in the center of the instrument panel 2 and blows air toward the windshield.
An air conditioner 6 is provided with side-end blow-off ports 4 located at both ends to blow air out to the window glass of the door, and supplies cold or warm air to an air supply port 5 provided approximately at the center in the length direction. is connected.

Incidentally, since the amount of air blown out from the air supply port 5 decreases as the distance from the air supply port 5 increases, the amount of air blown out from the side end outlet 4 of the duct 1 is equal to the amount of air blown out from the center outlet 3. The amount of air is less than the amount of air being emitted, and the door window glass cannot be defogged sufficiently. Therefore, the inside of the duct 1 is partitioned by a partition plate 7 provided along its length, and is divided into a first ventilation path 8 that guides air from the air supply port 5 to the central outlet 3, and a first ventilation path 8 that guides air from the air supply port 5 to the central outlet 3; A second ventilation path 9 is formed to guide the air from the air outlet 5 to both side end outlets 4, so that a sufficient amount of air is blown out from each outlet 3,4.

And this duct 1, as shown in Fig. 5,
A gutter in which one side edge of a resin partition plate 7 is integrally molded, and a gutter-shaped first duct part 10 and a fitting part 11 into which the tip of the partition plate 7 fits are integrally resin molded. The second duct part 12 has a shape of
While inserting the tip of the partition plate 7 into the fitting part 11, both duct parts 10 and 12 are joined, and the engaging claw 10b provided on the flange part 10a of the first duct part 10 is connected to the second part. The flange portion 12a of the duct portion 12 is assembled integrally by engaging with the engaging hole 12b formed in the flange portion 12a, and the entire circumferences of both flange portions 10a, 12a are welded or fitted with an engaging claw to release the air. This prevents leakage and the generation of abnormal noises due to rattling.

However, in the case of such a conventional automobile ventilation duct, in order to maintain airtightness between the first ventilation passage 8 and the second ventilation passage 9 that are partitioned by the partition plate 7, the partition plate 7 is The tip of the connector was inserted into the fitting part 11. Therefore, both duct parts 1
When assembling parts 0 and 12 together, the work of inserting the partition plate 7 into the fitting part 11 must be done intuitively, making the assembling work difficult and therefore time-consuming. There was a problem.

[Purpose of invention]

The present invention was made to solve these conventional problems, and the purpose is to provide a ventilation duct for an automobile that is easy to assemble and can maintain sufficient airtightness of the ventilation passage divided into two parts. That is.

[Example of idea]

The present invention will be explained in detail below based on the embodiment shown in FIG. 1. The external shape of the duct according to this embodiment is similar to that of the conventional example shown in FIGS. 2 to 6. Therefore, the explanation of its structure will be omitted.

The duct 1 according to this embodiment is formed into a tubular shape by joining a first duct part 10 molded with resin in the shape of a gutter and a second duct part 12 molded with resin in the shape of a gutter, and has a central air outlet 3. a first ventilation passage 8 that guides air to
and side air outlets 4 provided at both ends of the duct 1.
A partition plate 7 that separates the second ventilation path 9 that guides air from the
, one edge thereof is integrally molded on the inner surface of the first duct portion 10 . A thin elastic tongue piece 13 is extended from the other edge of the partition plate 7 along its length, and both duct parts 10, 1
2 is assembled, the tip edge of the elastic tongue piece 13 comes into contact with the inner surface of the second duct part 12, and the airtightness between the first ventilation passage 8 and the second ventilation passage 9 is maintained. ing.

That is, when assembling the first duct part 10 and the second duct part 12 together, the elastic tongue piece 13 provided on the free end edge of the partition plate 7 fixed to the first duct part 10 The first ventilation passage 8 and the second ventilation passage 9 separated by the partition plate 7 are kept airtight by contacting the inner surface of the second duct portion 12. The first ventilation passage 8 and the second ventilation passage 9 can be airtight by simply aligning the respective flanges 10a and 12a of both duct parts 10 and 12 and engaging the engagement claw 10b with the engagement hole 12b. Since the tubular duct 1 with its properties maintained can be formed, the assembly work of the duct 1 is facilitated and the assembly work time can be shortened.

In addition, in the case of conventional ducts, the fitting part 11 into which the tip of the partition plate 7 fits protrudes into both ventilation passages 8 and 9, resulting in a loss of cross-sectional area of the ventilation passage, and the fitting part 11. However, in this embodiment, there are no protruding objects in the ventilation passages 8 and 9, so a sufficient cross-sectional area of the ventilation passages can be ensured. The effect of preventing the generation of sound can be obtained.

[Summary of the idea]

As explained above, the present invention has air outlet ports 3 and 4 in the center and both ends of the instrument panel 2, and has two gutter-shaped resin molded parts 10 and 12. The product 10 has a partition plate 7 connected to one side edge on its inside, and both resin molded products 10 and 12 are fixed in a tubular shape so that a passage 8 is connected to the central outlet 3 and a passage 8 is connected to the outlet 4 at both ends. In the automobile ventilation duct formed with the passage 9, an elastic tongue piece 13 is provided on the other edge of the partition plate 7 and extends along it, so that the elastic tongue piece 13 comes into contact with the inside of the other resin molded product 12. This is an automotive ventilation duct characterized by:

[Effect of idea]

Therefore, according to the present invention, when both resin molded parts 10 and 12 are assembled, the elastic tongue piece 13 of the partition plate 7 provided on one of the resin molded parts 10
Since the two passages 8 and 9 partitioned by the partition plate 7 are kept airtight by contacting the inside of the other resin molded part 12, the resin molded part 10,
Assembling work in step 12 becomes easier and the assembly work time can be shortened.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an embodiment of the ventilation duct for an automobile according to the present invention, Figs. 2 to 6 show conventional ventilation ducts for an automobile, and Fig. 2 shows a state in which the ventilation duct is assembled into an automobile. FIG. 3 is a front view of the duct, FIG. 4 is a sectional view taken along the - line in FIG. 2, FIG. 5 is a sectional view taken along the - line in FIG. 2, and FIG. 6 is a sectional view taken along the - line in FIG. FIG. 2 is a sectional view taken along the - line in FIG. 2; 13...Elastic tongue piece.

Claims (1)

[Scope of utility model registration request] A resin molded product 1 that is one of two gutter-shaped resin molded parts 10 and 12 that have air outlets 3 and 4 in the center and both ends of the instrument panel 2.
0 has a partition plate 7 with one side edge joined on the inside, and both resin molded products 10 and 12 are fixed in a tubular shape to form a passage 8 connected to the central outlet 3 and a passage connected to the opposite end outlets 4. 9, an elastic tongue piece 13 is provided on the other edge of the partition plate 7 and extends along the other edge of the partition plate 7.
A ventilation duct for an automobile, characterized in that the duct contacts the inside of the other resin molded product 12.