JPH0732175Y2 - Air conditioning duct - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to the structure of a duct mounted near an air-conditioning outlet provided in, for example, a vehicle compartment.

[Conventional technology]

As shown in FIG. 3, a duct installed inside an air blow grill provided in a vehicle interior of an automobile or the like is generally divided into an upper mold 1a and a lower mold 1b, which are separated from each other. A method is known in which a body is molded, and after molding, the upper and lower molds 1a and 1b are combined and assembled.

In the duct manufactured in this way, since the inner wall of the main body 1 forming the ventilation passage can be formed flat, a sufficient amount of air can be sucked and blown out through the wind direction adjusting plate 1c formed therein, Excellent in performance.

However, if the duct body 1 is separated into the upper and lower parts as described above, a dedicated mold is required for manufacturing the duct, and a step of combining the upper and lower molds 1a and 1b with an adhesive or the like after molding is required. Therefore, the manufacturing cost becomes high.

Therefore, as shown in FIG. 4 (A), a method of integrally manufacturing the entire duct is adopted, and the manufacturing cost is reduced.

The air-conditioning duct according to this method is formed in a rectangular tube shape having ventilation holes for the air intake 2 and the air outlet 3 on the back and front of the main body 1, and the direction of the air passing through the main body 1 of the duct. Is formed by integrally forming the main body 1 and the wind direction adjusting plate 1c with synthetic resin.

[Problems to be solved by the device]

Here, when the air-conditioning duct is manufactured by integral molding, in order to form the wind direction adjusting plate 1c in the duct body 1, two types of male molds a and b as shown in FIG. 4B are used. Need. Then, one male mold a is attached from a direction to be the suction port 2 of the duct, and the other male mold b is attached from a direction to be the blowout port 3 of the duct. After molding, the male molds a and b are attached. Die cutting is performed separately in the direction of the suction port 2 and the direction of the blowing port 3.

At this time, since the male dies a and b must be formed with an inclination so as to gradually taper toward the tip in order to remove the die, when resin molding, these male dies a and b are formed. In the adjacent mating portion of the duct body 1
Two inclined step portions 4 and 5 that gradually increase in height in the respective directions are necessarily formed on the upper and lower walls inside.

Therefore, there is a problem that the opening area of the duct is reduced and the ventilation passage is narrowed, so that a sufficient air volume cannot be obtained.

The present invention was devised in view of the above problems,
It is an object of the present invention to provide an air-conditioning duct that can be manufactured by integral molding of the entire duct including the wind direction adjusting plate and that can obtain a sufficient air volume.

[Means for Solving the Problems]

In order to achieve the above object, in the present invention, an air conditioning duct has a tubular main body having air inlets and outlets that form ventilation openings on the back and front, and from one side edge of the main body. A plate body as an airflow direction adjusting plate that is integrally connected to the outside with an opening portion therebetween, a first hinge portion formed on the one side edge of the main body, and the opening portion and the plate body. The second hinge portion formed along the boundary is integrally configured as a whole. Then, the opening is folded back inward at the first hinge so that the opening coincides with the opening of the suction port or the outlet, and the second hinge moves the plate inward. By bending the plate body at a predetermined angle, the plate body is inserted into the main body, and the tip of the plate body is fixed at a predetermined position in the main body so that the wind direction adjusting plate is arranged in the main body. .

[Action]

According to this invention, at one side edge of either the air intake port or the air outlet port formed at both ends of the tubular body, an opening portion is integrally formed outward, and the opening portion is formed. By forming and connecting the plate body with the parts separated from each other, the entire air-conditioning duct is integrally formed, and after the formation, the plate body is formed by the two hinge portions formed on the one side edge and the plate body. By inserting and fixing it in the main body, an air flow direction adjusting plate was provided in the duct.

Thereby, since the wind direction adjusting plate can be integrally formed with the main body in the expanded state, the duct is divided and molded, or like the conventional method in which the wind direction adjusting plate is directly formed in the main body of the duct, During molding, since two different types of male molds are removed from the inner surface of the main body, inclined surfaces with different directions are not formed, so that the area of the duct ventilation opening is not unnecessarily reduced. .

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is an exploded perspective view showing a state in which the entire air conditioning duct 10 according to the present invention is integrally molded of synthetic resin. In the figure, an air-conditioning duct 10 has a rectangular tube-shaped main body 11 whose both ends are open and whose inside is formed as a ventilation path, the back side of which serves as an air inlet 12 and the front side of which is an outlet 13. It forms a ventilation opening. The air-conditioning duct 10 is attached to the inside of an air-blowing grill such as an instrument panel or a side wall of a vehicle, for example, to blow air sent from a vehicle-mounted blower or the like through a predetermined ventilation duct (not shown). The air-conditioning duct 10 is inhaled through an inlet 12 and blown out through an outlet 13 into the vehicle interior.

Flanges 12a and 13a are integrally formed around the suction port 12 and the blowout port 13, respectively, so that they can be used for attachment to the ventilation duct or the blowout grill.

Here, from one side edge of the main body 11 of the air conditioning duct 10, that is, in the present embodiment, at the one side edge of the flange 12a formed around the air suction port 12 on the back side of the main body 11, the long side thereof is extended. The opening 14 and the plate 15 extending further outward from the opening 14 are formed so as to extend outward along the direction.
It is connected to 11 and is integrally formed.

Then, along the boundary between the flange 12a and the opening 14, that is, along one side edge of the suction port 12 of the main body 11, the first hinge portion is formed.
16 is formed, and similarly, a second hinge portion 17 is formed along the boundary between the opening portion 14 and the plate body 15 at a predetermined distance from the first hinge portion 16. Both these hinge parts 16
Boundaries 17 and 17 are formed integrally with the main body 11 as a so-called integral hinge so that they can be bent by forming their boundary surfaces to be thin.

The left end of the opening 14 is aligned with the right end of the opening of the suction port 12 of the main body when folded back at the first hinge portion 16 by leaving only the protrusion width of the flange 12a in FIG. The upper and lower sides of the opening 14 are formed so as to at least match the vertical width of the suction port 12 of the main body 11 or to be wider than that.

Further, protrusions 18a, 18a are formed above and below the tip of the plate body 15, whereby the second hinge portion 17 is bent inward to move the plate body 15 into the suction port 12 of the main body. When inserted into the main body 11, the plate body 15 can be securely fixed to predetermined positions on the upper and lower inner walls of the main body 11. Therefore, the upper and lower inner walls of the main body 11 are provided with concave grooves 19a, 19a into which the protrusions 18a, 18a can be fitted, and thus the plate body 15 is adjusted to an appropriate angle in the main body 11. When fixed by being fixed, it acts as an air flow direction adjusting plate.

When fixing the wind direction adjusting plate 15 in the duct,
It is also possible to fix the upper and lower surfaces of the wind direction adjusting plate 15 to the inner wall surface of the air passage of the main body 11 by bonding or the like without forming the a and the concave groove 19a. Further, in the present embodiment, the opening 14 and the plate 15 connected to the opening 14 are connected to one side edge of the air suction port 12 on the rear surface side of the main body, but the air blowout port 13 side on the front surface side. You may make it connect to one side edge.

The air-conditioning duct 10 according to the present invention is configured as described above, and is connected to each part constituting the air-conditioning duct 10, that is, the main body 11 having the ventilation port, both flanges 12a, 13a, and the opening 14. All parts of the plate body 15 as the wind direction adjusting plate, the projection 18a, and the recessed groove 19a engaging with the projection 18a are integrally formed by synthetic resin such as injection molding.

Next, a procedure for fixing the airflow direction adjusting plate to the air conditioning duct 10 having the above structure will be described with reference to FIG.

As shown in FIG. 1, the air-conditioning duct 10 is integrally formed with the opening 14 and the plate member 15 connected to the opening 14 extending outward from one side edge of the main body 11. The opening 14 and the plate body 15 formed by bending are bent.

First, at the first hinge portion 16 formed at the side edge portion of the duct body 11, the peripheral edge of the opening portion 14 does not block the suction port 12, and the opening portion 14 and the plate body 15 are ° Bend inward and overlap the left end with the right end of the flange 12a.

Then, the plate body 15 is further bent inward by the second hinge portion 17, and the plate body 15 is forcibly inserted into the ventilation passage of the main body 11 from the suction port 12. Here, since the plate body 15 has a certain degree of flexibility together with the main body 11, the protrusions 18a formed on the upper and lower ends of the plate body 15 rub against the inner wall of the main body 11 to form concave grooves formed on the upper and lower inner walls. Fit into 19a.

At this time, since the concave groove 19a is formed in an arc shape as shown in FIG. 2 (B), the protrusion 18a moves in the concave groove 19a and is set at an appropriate angular position. become. In this way, the plate body 15 as the wind direction adjusting plate is adjusted to the angle α that produces a suitable wind direction. If you decide this angle α,
A hole (not shown) is formed in a position where the protrusion 18a is engaged in the hole a, and the protrusion 18a is fixed to this hole. Thus, the airflow direction adjusting plate 15 is adjusted and arranged in the main body 11 of the air conditioning duct 10 so as to generate a suitable airflow direction.

Although only one wind direction adjusting plate 15 is arranged in the duct 10 in the illustrated embodiment, a similar opening 14 and a plate body 15 connected to this are formed at the other side edge of the duct body 11. As a result, it goes without saying that the wind direction adjusting plates can be arranged in a group of two or more by integral molding.

[Effect of device]

As described above, according to the present invention, it is possible to integrally manufacture an air-conditioning duct having an airflow direction adjusting plate in the ventilation passage, and further to form the inner wall of the ventilation passage flat.
The opening area of the ventilation port is not formed unnecessarily small. Therefore, it is possible to provide an excellent air conditioning duct that can obtain a sufficient air volume and can be manufactured at low cost by integral molding.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an air conditioning duct integrally molded according to the present invention. FIG. 2 (A) is a perspective view showing an assembled state of the air conditioning duct according to the present invention, and FIG. 2 (B) is a plan sectional view of an essential part of FIG. 2 (A). 3 and 4 show a conventional air conditioning duct,
FIG. 3 is a perspective view of the split assembly method, FIG. 4 (A) is a perspective view of an air conditioning duct of the integral molding method, and FIG. 4 (B) is a plan sectional view of the manufacturing process (A). 10 …… Air conditioning duct; 11 …… Duct body; 12 …… Suction port; 13 …… Blowout port; 14 …… Opening part; 15 …… Plate body (wind direction adjusting plate); 16 …… First hinge part ; 17 …… Second hinge part; 1
2a, 13a …… Flange.

Claims (2)

[Scope of utility model registration request] 1. A tubular main body having a ventilation opening, a plate body as an airflow direction adjusting plate integrally connected to one side edge of the main body outwardly with an opening portion, and the above-mentioned one of the main body. A first hinge portion formed on a side edge and a second hinge portion formed along a boundary between the opening and the plate body, and the entire body including the main body and the plate body are integrally formed. The opening portion is folded back inward at the first hinge portion, and the plate body is bent at the second hinge portion to be inserted into the main body, and a predetermined portion in the main body is formed. An air conditioning duct characterized in that an air flow direction adjusting plate is provided in the main body by fixing the plate body at a position. 2. A duct mounting flange is formed around an air inlet and an outlet forming a ventilation hole of the main body, and the opening is formed outward from one side edge of the flange. The air-conditioning duct according to claim 1, wherein plate bodies serving as wind direction adjusting plates are integrally connected to each other with a space therebetween.