JPH0610005U - Air conditioning duct connection structure - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention relates to a connection structure between a male duct and a female duct formed by blow molding of a synthetic resin. It is possible to surely prevent air-leakage without using packing by the surface joining of the flange and the flange, and to reduce the number of parts and the cost. [Structure] A duct body is formed by blow molding of synthetic resin, a flange is formed at its mouth end, and a waste bag formed at the mouth end is obliquely cut to form an insertion guide portion for a tapered taper. A connecting structure for an air conditioning duct, comprising a male duct and a female duct including a flange that is joined to the flange and a duct body that is inserted into an insertion guide.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an air conditioning duct connection structure for connecting a duct body, a female duct having a flange to a male duct having a duct body, a flange and an insertion guide formed by blow molding of synthetic resin.

[0002]

[Prior art]

 Next, the conventional air conditioning duct connection structure shown in FIG. 6 will be described. Reference numeral 1 is a bench case, which is provided with a cage 6 having a plurality of ribs which are inserted into the large-diameter opening 8 of the blower duct 3 at the rear end of the duct connection portion to prevent air leakage. The seal material 7 is arranged at the opening of the blower duct 3.

[0003]

[Problems to be solved by the device]

 In the above-mentioned prior art, since a guide having a plurality of ribs formed in a cage shape is required, the number of man-hours required for die processing increases and the cost increases, and when the seal material is twisted or peeled off, the air- There was a problem that leakage occurred. The present invention aims to solve the above problems.

[0004]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention forms a duct body by blow molding of synthetic resin, forms a flange at the mouth end, and further taper a tapered waste bag formed at the mouth end. It is characterized in that a female duct including a flange to be joined to the flange and a duct body to be inserted into the insertion guide is joined to the male duct in which the insertion guide portion of-is formed.

[0005]

【Example】

 The first embodiment of the present invention shown in FIGS. 1 to 3 will be described in detail. Reference numeral 10 denotes a male duct main body formed by blow molding of synthetic resin. A flange 11 is formed by crushing the mouth end of the male duct main body, and a waste bag 12 formed at the mouth end of the blow molding is slanted from above. A male duct A, which is cut into a plurality of pieces and has a tapered taper insertion guide 13 formed therein, and a female duct B, which is composed of a flange 21 joined to the flange 11 and a duct body 20 inserted into the insertion guide, are connected. It is supposed to do. The flange 11 of the male duct A is formed by using the molds 25 and 26 shown in FIG.

[0006]

[Action]

 At the time of connection, the duct body 20 of the female duct B is inserted into the insertion guide 13 of the tapered taper of the male duct A, and the flange 11 and the flange 21 are surface-joined.

FIG. 4 shows a second embodiment of the present invention, in which a bent piece 15 is integrally formed on an outer edge of a flange 11 via a thin hinge 14, a hole 16 is formed in an intermediate portion, and a flange 21 is attached to the flange 21. A stop claw 22 is provided so that the bent piece 15 is superposed on the flange 21, and the locking claw 22 is fitted and locked in the hole 16 to surely prevent air leakage.

FIG. 5 shows a third embodiment of the present invention, in which a flange pin 21 is provided with a projecting pin 23, which is fitted and locked in a hole 24 of the flange 11.

[0009]

[Effect of device]

 According to the present invention, a duct body is formed by blow molding of a synthetic resin, a flange is formed at the mouth end, and a waste bag formed at the mouth end is provided with an insertion guide portion of a tapered taper cut diagonally. The formed male duct is joined to the female duct consisting of the flange that joins with the above flange and the duct body that inserts into the insertion guide. It can be easily assembled by using an insertion guide having a surface and a tapered taper, and air is transferred from the male duct to the female duct, so there is essentially no air leakage, and the flange and the flange Air-leakage can be reliably prevented by surface bonding, and the number of parts can be reduced and cost can be reduced.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a first embodiment of the present invention.

FIG. 2 is a front cross-sectional view of FIG. 1 when connected.

FIG. 3 is a front cross-sectional view of the flange forming mold of FIG. 1.

FIG. 4 is a front sectional view of a flange surface joint portion of a second embodiment of the present invention.

FIG. 5 is a front sectional view of a flange surface joint portion of a third embodiment of the present invention.

FIG. 6 is a front sectional view of a conventional device when connected.

[Explanation of symbols]

 A Male Duct 10 Male Duct Body 11 Flange 12 Discard Bag 13 Insertion Guide B Female Duct 20 Duct Body 21 Flange

Claims (1)

[Scope of utility model registration request] 1. A duct main body is formed by blow molding of synthetic resin, a flange is formed at the mouth end thereof, and a waste bag formed at the mouth end is obliquely cut to form an insertion guide portion of a tapered taper. A connecting structure for an air-conditioning duct, which is formed by joining a female duct consisting of a flange joined to the flange and a duct body inserted into an insertion guide to the formed male duct.