JP2002061936A - Guiding duct-mounting structure of air conditioner for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure a reliable connection state without coming off even if a guiding duct moves. SOLUTION: A duct connection part 7 that communicates with an insertion release opening 9 being inserted from the side orthogonally crossing a supply opening 3 and has upper and lower guide support surfaces 11 and 13 is provided at the supply opening 3 being provided at a unit case 1. At the same time, a connection part 19 formed by a peripheral flange 17 is provided at the guiding duct 5, and the connection part 19 is inserted along the upper and lower guide support surfaces 11 and 13 of the duct connection part 7 from the insertion release port 9, thus connecting the guiding duct 5 and the supply opening 3 so that they can communicate each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide duct mounting structure for a vehicle air conditioner suitable for an automobile.

[0002]

2. Description of the Related Art In general, in an air conditioner of an automobile, for example, in an induction duct that blows warm air to a foot of a rear seat, the duct is arranged along a floor panel, one is located at a foot of the rear seat, and the other is located at a foot of the rear seat. The air conditioner is extended forward and is connected to the foot outlet of the unit case of the air conditioner disposed in the instrument panel.

In order to attach the guide duct to the foot outlet, a mounting means is used in which the foot outlet provided at the bottom of the unit case and the duct opening of the guide duct are overlapped.

[0004]

The guide duct connected to the foot outlet has a long shape for guiding warm air to the feet of the occupant in the rear seat, and is overlapped and connected from above and below. We have taken measures, but there was a side where the connection was not stable. In some cases, the connection position is displaced, causing problems such as leakage of warm air therefrom.

[0005] In order to solve this problem, a means has been known in which fitting flanges are provided, and a fitting state without positional displacement can be obtained by fitting the fitting flanges from above and below. However, this means may be disengaged in some cases when the guide duct moves vertically, and the fitting area slides, so that the sealing property is not good.

In this case, the fitting area may be securely fixed and supported by the fixing means. However, the number of steps for fixing is increased, and this is not desirable in terms of cost.

Accordingly, an object of the present invention is to provide a guide duct mounting structure for an air conditioner for a vehicle, in which a connection state between an outlet and a guide duct can be reliably obtained without using a fixing means or the like.

[0008]

In order to achieve the above object, according to the first aspect of the present invention, an insertion device is inserted into an air outlet provided in a unit case from a side orthogonal to the air outlet. While providing a duct joint having upper and lower guide support surfaces communicating with the opening, the guide duct has a joint formed by a peripheral flange, and the joint is
The duct is inserted from the insertion opening along the upper and lower guide support surfaces of the duct connecting portion to connect and communicate the duct opening of the guide duct and the outlet.

Thus, for example, warm air from the outlet of the unit case is guided by the guide duct.

At this time, the connecting portion of the guide duct is supported by the upper and lower guide supporting surfaces and does not come off.
A reliable and stable connection with respect to the movement of the guide duct is obtained, and a correct connection and communication between the outlet and the duct opening of the guide duct is ensured.

In addition, since there is no movement, the sealing performance is greatly improved.

According to the second aspect of the present invention, the insertion opening is closed by the removable opening closing member.

[0013] Thus, the connecting portion of the guide duct inserted from the insertion opening is restricted by the opening closing member in the direction in which the guide duct is pulled out, and a reliable connection state is obtained.

Further, according to the third aspect of the present invention, the open port closing member is provided with a blind lid for closing the outlet.

Thus, when the duct connection portion is ductless, the closed state of the outlet by the blind lid can be obtained by inserting the open port closing member into the insertion open port.

[0016]

According to the guide duct mounting structure for an air conditioner for a vehicle according to the present invention, the connecting portion of the guide duct can be supported by the upper and lower guide support surfaces of the duct connecting portion. A reliable and stable connection state that does not come off can be obtained.

In addition, a proper connection and communication between the air outlet and the duct opening of the guide duct can be ensured, and the connection area does not move, so that the merit of greatly improving the sealing performance can be obtained.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to FIGS.

FIG. 7 is a view of the unit case 1 of the air conditioner as viewed from the bottom, and foot outlets 3 and 3 are provided on both the left and right sides at the bottom of the unit case 1.

Although not shown, the unit case 1 communicates outside the cooling heat exchanger and the heating heat exchanger with the air passing through the cooling heat exchanger and passing through the heating heat exchanger. It has a mix door that controls the flow so that it can be selectively selected to be in a non-existent state, and a mode door that opens and closes a differential port, a vent port, a foot port, and the like. The foot port communicates with the outlets 3 and 3 for the foot. It has a matching structure.

The foot outlet 3 has a duct connecting portion 7 to which the guide duct 5 is connected, and a specific example is shown in FIG.

The duct connecting portion 7 has an insertion opening 9 to be inserted from the side (right and left outer sides in FIG. 7) orthogonal to the outlet 3, and upper and lower guide support surfaces 11, 13 communicating with the insertion opening 9.
The duct insertion opening side of the duct connecting portion 7 is inclinedly enlarged in the upper and lower directions than the support surfaces 11 and 13 which are the general portion, and the central portion is largely opened. Further, the lower side, which is the flange contact side, is inclinedly enlarged 11a in order to quickly guide the duct connecting portion 19 to the general portion.
are doing. This tilt expansion may be on both sides. Also,
The upper side is inclined and enlarged 13a so that the seal member 21 such as a packing, which will be described later, is prevented from being caught and inserted smoothly while being compressed.

The guide duct 5 is arranged along a floor panel (not shown) and is set to have a length (only a part is shown) for blowing warm air to the feet of the occupant of the rear seat.

The duct opening 15 of the guide duct 5 is provided with a connecting portion 19 formed by a peripheral flange 17 projecting along the outer periphery. The insertion width d of the peripheral flange 17 serving as the joint 19 is equal to the insertion opening 9 of the duct joint 7.
The opening width D is substantially the same as or slightly smaller than the opening width D so that insertion can be performed easily.

A seal member 21 for ensuring an airtight state is provided on the upper surface of the peripheral flange 17. The dimension H from the peripheral flange 17 to the upper surface of the seal member is set to be larger than the dimensions of the upper and lower slide support surfaces 11 and 13 of the duct connecting portion 7, and as shown in FIG.
By inserting while compressing, a strong contact pressure due to the reaction force is secured, and a reliable airtight state can be obtained.

On the other hand, the insertion opening 9 of the duct connecting portion 7 is provided with an opening closing member 23 for closing the insertion opening 9.

The opening / closing member 23 is made of a synthetic resin material and is set to have substantially the same width as the width D of the insertion opening 9. On both left and right sides, when the insertion is completed, there are engaging hook portions 29, 29 which engage with engaging step portions 27 provided on both side walls 25 of the upper and lower slide support surfaces 11, 13. The engaging hook portion 29 is made of a synthetic resin material so as to be elastically deformable so as to expand and contract inward and outward, and is pushed inward by the side wall 25 of the slide support surfaces 11 and 13 at the time of insertion. By returning to, the engagement step portion 27 is engaged.

As shown in FIG. 9, it is desirable to separately prepare an opening closing member 23 having a shape having a blind lid 31 for closing the air outlet 3. Thereby, the opening 3 can be closed by the blind lid 31 by inserting the opening closing member 23 when the duct connecting portion 7 is ductless.

Next, a procedure for attaching the guide duct 5 will be described.

As shown in FIG. 1, the connecting portion 19 of the guide duct 5 is opposed to the insertion opening 9 of the duct connecting portion 7 and is fully inserted along the upper and lower slide support surfaces 11 and 13 until it abuts. After the insertion is completed, the insertion opening 9 is closed by the opening closing member 23.

As a result, the joint 19 of the guide duct 5
A reliable restraint state can be obtained without moving in the up-down, left-right, and up-down directions, so that it does not come off. In addition, the outlet 3 and the duct opening 15 of the guide duct 5 can obtain an accurate connection and communication state without displacement.

In this embodiment, the guide duct for the foot is described in this embodiment, but the duct may be applied to another air conditioning duct.

[Brief description of the drawings]

FIG. 1 is a schematic exploded explanatory view showing an attached state of a guide duct according to the present invention.

FIG. 2 is an explanatory view of inserting an opening closing member into an insertion opening of one duct connecting portion.

FIG. 3 is a schematic cross-sectional view when the insertion of the opening port closing member is completed.

FIG. 4 is a schematic explanatory view of an insertion opening and upper and lower slide support surfaces as viewed from the direction of the insertion arrow in FIG. 2;

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a sectional view taken along line BB of FIG. 4;

FIG. 7 is a schematic bottom view of a unit case showing duct connection portions on the left and right.

FIG. 8 is a schematic sectional view in which a connecting portion of an induction duct is inserted into a duct connecting portion.

FIG. 9 is a schematic plan view in which a blind lid is provided on the opening / closing member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Unit case 3 Air outlet 5 Induction duct 7 Duct connection part 9 Insertion opening port 11, 18 Guide support surface 19 Connection part

Claims (3)

[Claims] 1. An upper and lower guide support surface which communicates with an insertion opening (9) which is inserted into an outlet (3) provided in the unit case (1) from a side orthogonal to the outlet (3). (11) A duct connection (7) having (13) is provided, while a guide (5) is provided with a connection (19) formed by a peripheral flange (17), and the connection (1) is provided.
9) from the insertion opening (9) to the duct connecting portion (7).
An air conditioner for a vehicle, characterized in that it is inserted along upper and lower guide support surfaces (11) and (13) to connect and communicate a duct port (15) of a guide duct (5) and an air outlet (3). Induction duct mounting structure. 2. The guide duct mounting structure for a vehicle air conditioner according to claim 1, wherein the insertion opening is closed by a removable opening closing member. 3. The installation of a guide duct for an air conditioner for a vehicle according to claim 2, wherein the opening closing member (23) has a blind lid (31) for closing the air outlet (3). Construction.