JP2003136941A - Mounting structure for instrument panel and air- conditioner duct, and air-conditioner duct - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mounting structure of an instrument panel and air- conditioner duct capable of being embodied in a reduced weight at a low cost and mitigating the restrictions imposed on any air-conditioner duct in terms of shape and structure. SOLUTION: A center duct part, boost duct part, and defroster duct part are formed in the air-conditioner duct 14 through a single-piece blow molding process, and the duct 14 is furnished consolidatedly with a first mounting seat 20 to fix the duct to a car frame 11 and a second mounting seat 21 to fix the instrument panel 13, and in the first mounting seat 20 the duct 14 is fixed to the car frame 11, while the instrument panel 13 is placed on the duct 14 and fixed thereto in the second mounting seat 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for an instrument panel and an air conditioning duct, and an air conditioning duct particularly suitable for the mounting structure.

[0002]

2. Description of the Related Art A conventional mounting structure for an instrument panel and an air conditioning duct, as shown in FIG. 6, for example, supports an instrument panel 3 at a predetermined position by a large number of supporting members 2 formed on an automobile frame 1. An air conditioning duct 4 is attached to the back side of the instrument panel 3. Therefore, since the instrument panel 3 does not distort itself and supports the air-conditioning duct 4, it is necessary to form the instrument panel 3 to be thick to increase rigidity.
It had increased weight and cost. Further, since a large number of support members 2 cross the space through which the air conditioning duct 4 passes, the shape and structure of the air conditioning duct 4 are restricted, and for example, the structure becomes complicated and the cross-sectional area through which air passes decreases, resulting in reduced air conditioning efficiency. There are also inconveniences such as.

Further, the air conditioning duct 4 is provided with a center duct portion 4a having an air intake from the air conditioning unit,
It is composed of a plurality of members such as a boost duct part 4b connected to the left and right thereof and a defroster duct part 4c having an air intake from the air conditioning unit, and these are assembled into one and mounted under the instrument panel 3. Has been. Therefore, there is a problem that not only the cost for manufacturing and assembling a plurality of members is high, but also the cross-sectional area through which air passes is reduced due to the shape regulation of the joint portion, or air leakage from the joint portion easily occurs.

On the other hand, Japanese Patent Laid-Open No. 11-123923 discloses an air conditioning duct including a center duct part, a boost duct part and a defroster duct part, which is integrally formed by blow molding. This is because the air-conditioning duct is divided into two parts that are connected to each other via a thin-walled hinge, integrally molded in a form that allows die-cutting, then bent at the thin-walled hinge, and both parts are joined by rivets. It is to be a regular form. This can solve the above-mentioned problems of the conventional air conditioning duct, and since both parts are connected and fixed by thin hinges and rivets, the rigidity is high, and there is an advantage that the air conditioning duct can be reduced in weight accordingly. It is said that there is.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in order to improve the conventional problems in the mounting structure for the instrument panel and the air conditioning duct, and reduces the weight and cost of the mounting structure, and The purpose of the present invention is to reduce the restrictions on the shape and structure of the air-conditioning duct, which is unavoidable due to the presence of many supporting members.

[0006]

A structure for mounting an instrument panel and an air-conditioning duct according to the present invention is provided with an air-conditioning duct in which a center duct part, a boost duct part and a defroster duct part are integrally molded by blow molding. And a second mounting seat for fixing the instrument panel are integrally formed, the air conditioning duct is fixed to the vehicle frame at the first mounting seat, and the instrument panel is It is characterized in that it is mounted on an air conditioning duct and is fixed to the air conditioning duct at the second mounting seat.

Further, in another mounting structure according to the present invention, the first mounting seat is for fixing the air conditioning duct to the air conditioning unit, and the air conditioning duct is fixed to the air conditioning unit at the first mounting seat. At the same time, the air conditioning unit is fixed to the automobile frame. Further, in another mounting structure according to the present invention, the first mounting seat is for fixing the air conditioning duct to the automobile frame or the air conditioning unit (for fixing the air conditioning duct to the automobile frame in the first mounting seat). And the one for fixing to the air conditioning unit), the air conditioning duct is fixed to the air conditioning unit and the automobile frame respectively at the first mounting seat, and the air conditioning unit is fixed to the automobile frame. In any of the above mounting structures, the second
It is desirable that the mounting seat be provided in each of the center duct portion, the boost duct portion, and the defroster duct portion. Further, the second mounting seat is formed, for example, in a shape protruding upward from each duct portion.

The air-conditioning duct according to the present invention is particularly suitable for the above-mentioned mounting structure. The air-conditioning duct is integrally molded by blow molding and is connected to each other through a thin hinge.
One part includes a center duct part and a boost duct part, the other part includes a defroster duct part, and a hook or a hook hole is integrally formed in the one part, and the other part is formed. The corresponding hook holes or hooks are integrally formed on the base, and after blow molding in a form that is expanded so that it can be removed from the mold, it is bent at the thin hinge part and the hook and the hook hole form two parts. The second mounting seat for fixing the instrument panel and the first mounting seat for fixing to the vehicle frame and / or the air conditioning unit are integrally formed. Further, a convex portion or a concave portion is integrally formed on the one portion, and a concave portion or a convex portion corresponding to the convex portion or the concave portion is integrally formed on the other portion so that the both fit in a regular form. May be.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A mounting structure for an instrument panel and an air conditioning duct and an air conditioning duct according to the present invention will be specifically described below with reference to FIGS. First, FIG. 1 is a perspective view showing a form after blow molding and trimming of an air conditioning duct 14 according to the present invention, and like the air conditioning duct described in the above publication, a defroster duct part (a front defroster duct part 15 and a side). A portion formed of the defroster duct portion 16) and a portion formed of the center duct portion 17 and the boost duct portion 18 are connected by a thin hinge 19, and are integrally molded in such a manner that they are expanded so as to be die-cut. It should be noted that air intakes from the air conditioning unit are formed in both portions with the thin hinge 19 in between, as in the air conditioning duct described in the above publication.

In the air conditioning duct 14, a plurality of first mounting seats (not shown) are integrally formed in the boost duct portion 18, and the center duct portion 17, the boost duct portion 18 and the defroster duct portion (front defroster duct) are formed. A plurality of second mounting seats 21 are integrally formed on the portion 15). Further, the side defroster duct portion 16 is integrally formed with a pair of hooks 22 and a convex portion 23, and the boost duct portion 18 is integrally formed with a hook hole 24 with which the hook 22 is engaged and a concave portion 25 with which the convex portion 23 is fitted. Has been done. All of these are integrally molded by blow molding.

In FIG. 2, the air conditioning duct 14 is bent at the thin hinge portion 19 in the same manner as the air conditioning duct described in the above publication, the hook 22 is engaged with the hook hole 24, and at the same time, the convex portion 23 is fitted into the concave portion 25. It shows the combined state, that is, the state of being fixed in a regular mounting form. The air-conditioning duct 14 of this form has a hollow center duct portion 17 respectively.
The boost duct portion 18 and the defroster duct portion are connected by a thin hinge 19 having a predetermined width, fixed by the left and right hooks 22 and hook holes 24, and the convex portions 23 and the concave portions 25 are fitted to each other. Since it has high rigidity, the two parts are accurately aligned with each other. Further, since the hook 22 and the hook hole 24 which are integrally formed by blow molding are used for fixing,
The fixing work to the regular mounting form is extremely simple and inexpensive.

3 (a) and 3 (b) show the mounting structure of the instrument panel 13 and the air conditioning duct 14. As shown in FIG. The air conditioning unit is not shown (see FIG. 4). A plurality of support members 12 are formed on the automobile frame 11, an air conditioning duct 14 is fixed to the support member 12 at a first mounting seat 20 thereof, an instrument panel 13 is placed on the air conditioning duct 14, and a second Mounting seat 21
Is fixed to the air conditioning duct 14. In this example, since the second mounting seat 21 is formed in each of the center duct portion 17, the boost duct portion 18, and the defroster duct portion, the entire instrument panel 13 can be supported by the air conditioning duct 14, and the instrument panel The supporting rigidity of 13 can be maintained. The air-conditioning duct 14 is an integrally molded hollow body, is connected by a thin hinge 19, is fixed in a predetermined form by the left and right hooks 22 and hook holes 24, and has a convex portion 23 and a concave portion 25 fitted therein. , The rigidity is high, and the overall rigidity is further increased by stacking the instrument panel 13 thereon,
As a result, the thickness of the instrument panel 13 can be reduced.

Further, the air conditioning duct 14 is connected to the automobile frame 1.
1, the instrument panel 13 is supported on the air-conditioning duct 14. Therefore, a support member for supporting the instrument panel 13 which is conventionally required is substantially unnecessary (the support member may be provided auxiliary. Therefore, the automobile frame 11 can be simplified and reduced in weight, and restrictions on the shape and structure of the air conditioning duct 14 can be reduced. Therefore, for example, the air-conditioning efficiency can be improved by increasing the cross-sectional area through which air passes.

FIG. 4 shows another mounting structure (the numbers in the figure are basically those of FIGS. 1 to 3), and the air conditioning duct 14 has its first mounting seat 20 at the first mounting seat 20.
It is fixed to the upward-facing duct connection portion 31 of 0. The structure of the air conditioning duct 14 is the same as that of FIGS. 1 to 3 except for the first mounting seat 20. The air conditioning unit 30 has two mounting portions 32 of the automobile frame 11 on the left and right.
The lower front side is fixed to the center stay 33 of the automobile frame 11 via the mounting member 34, and the rear side is fixed to a dash panel (not shown). FIG. 5 shows still another mounting structure (the numbers in the figure basically use those in FIG. 4).
At the first mounting seat 20 of the automobile frame 1
It is fixed to one support member 12. Air conditioning unit 30
The mounting structure of is the same as that of FIG.
4 is the same as that of FIG. 4 except that the first mounting seat 20 corresponding to the support member 12 is added.

[0015]

According to the mounting structure of the instrument panel and the air conditioning duct according to the present invention, the weight and cost of the instrument panel and the automobile frame are reduced, and the restrictions on the shape and structure of the air conditioning duct are reduced. The air conditioning efficiency can be improved. Further, the air conditioning duct according to the present invention is suitable for the above-mentioned mounting structure because it has the advantages of extremely simple and inexpensive fixing work in a regular mounting form, high rigidity, and more accurate positioning.

[Brief description of drawings]

FIG. 1 is a perspective view (form when deployed) of an air conditioning duct according to the present invention.

FIG. 2 is also a perspective view (regular mounting form).

FIG. 3 is an exploded assembly view (a) and an assembly view (b) of a mounting structure for an instrument panel and an air conditioning duct according to the present invention.
Is.

FIG. 4 is an exploded assembly view (a) and an assembly view (b) of another mounting structure according to the present invention.

FIG. 5 is an exploded assembly view (a) and an assembly view (b) of still another mounting structure according to the present invention.

FIG. 6 is an exploded assembly view of a conventional mounting structure for an instrument panel and an air conditioning duct.

[Explanation of symbols]

11 car frame 12 Support member 13 Instrument panel 14 Air conditioning duct 15 Front defroster duct 16 Side defroster duct 16 17 Center duct part 18 Boost duct part 19 Thin-walled hinge 20 First mounting seat 21 Second mounting seat 22 hook 23 Convex part 24 hook holes 25 recess 30 air conditioning units

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Hideo Yokota             Minoru 447 Shimo-shi, Sanyo-cho, Akaban-gun, Okayama Prefecture             Kasei Co., Ltd. (72) Inventor Ryoichi Nishizaki             Minoru 447 Shimo-shi, Sanyo-cho, Akaban-gun, Okayama Prefecture             Kasei Co., Ltd. (72) Inventor Masayuki Koto             3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture Mazda             Within the corporation F-term (reference) 3D044 BA01 BA03 BA12 BA14 BB01                       BC01 BC07 BC30 BD11                 3L011 BR00

Claims (8)

[Claims] 1. A first mounting seat for fixing the air-conditioning duct to an automobile frame and a second means for fixing an instrument panel to an air-conditioning duct integrally formed by blow molding of a center duct part, a boost duct part and a defroster duct part. The mounting seat is integrally formed, and the air conditioning duct is the first
The mounting panel is fixed to the automobile frame, and the instrument panel is mounted on the air conditioning duct.
An attachment structure for an instrument panel and an air conditioning duct, characterized in that it is fixed to the air conditioning duct at a mounting seat. 2. A first mounting seat for fixing the air conditioning duct to the air conditioning unit and a second for fixing the instrument panel to an air conditioning duct integrally formed by blow molding of a center duct part, a boost duct part and a defroster duct part. A mounting seat is integrally formed, the air conditioning duct is fixed to the air conditioning unit at the first mounting seat, the air conditioning unit is fixed to the automobile frame, and the instrument panel is mounted on the air conditioning duct. An attachment structure for an instrument panel and an air conditioning duct, characterized in that it is fixed to the air conditioning duct at a mounting seat. 3. An air conditioning duct in which a center duct part, a boost duct part and a defroster duct part are integrally formed by blow molding, and a first mounting seat and an instrument panel for fixing the air conditioning duct to an air conditioning unit or an automobile frame, respectively. A second mounting seat for fixing is integrally formed, the air conditioning duct is fixed to the air conditioning unit and the vehicle frame at the first mounting seat, the air conditioning unit is fixed to the vehicle frame, and the instrument panel is used for the air conditioning. A mounting structure for an instrument panel and an air conditioning duct, which is mounted on the duct and fixed to the air conditioning duct at a second mounting seat. 4. The second mounting seat is a center duct portion,
The instrument panel and air-conditioning duct mounting structure according to claim 1, wherein the mounting structure is provided in each of the boost duct portion and the defroster duct portion. 5. The mounting of the instrument panel and air conditioning duct according to claim 1, wherein the second mounting seat is formed so as to project upward from each duct portion. Construction. 6. The air conditioning duct comprises two parts connected to each other through a thin hinge, one part of which includes a center duct part and a boost duct part, and the other part of which includes a defroster duct part. After the hook or the hook hole is integrally formed in one part and the corresponding hook hole or the hook is integrally formed in the other part, after blow molding in the expanded form so as to enable die cutting The instrument panel and the air conditioning duct according to any one of claims 1 to 5, characterized in that the thin hinge is bent at a portion and the two portions are fixed in a regular shape by the hook and the hook hole. Mounting structure. 7. The whole is integrally molded by blow molding,
And two parts connected to each other via a thin hinge, one part of which includes a center duct part and a boost duct part, and the other part of which includes a defroster duct part, and the one part includes a hook or a hook hole. Is integrally formed, and the corresponding hook hole or hook is integrally formed in the other part, and is blow-molded in such a form that it is expanded so that it can be die-cut, and then bent at the thin hinge part. The hook and the hook hole can fix the two parts in a regular shape, and the first mounting seat for fixing the vehicle frame and / or the air conditioning unit and the second mounting seat for fixing the instrument panel are integrated. Air-conditioning duct characterized in that it is formed in a special way. 8. A convex portion or a concave portion is integrally formed on the one portion, and a concave portion or a convex portion corresponding to the convex portion or the concave portion is integrally formed on the other portion, and both are fitted in a regular form. The air-conditioning duct according to claim 7, wherein: