JPH11263118A - Air-conditioning device for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify the structure of a cover for heater pipes laid on the outside of a case. SOLUTION: A pipe cover 3 to cover heater pipes 2 laid on the outside of a case has a bracket 5 formed rigidly at the end of the cover 3, and the bracket 5 is abutted and fitted to a bracket supporting wall 7 furnished protrusively on the side wall of the case, and a grommet 8 for sealing is attached in engagement to the bracket 5 and support wall 7, so that the bracket 5 is fixed by the grommet 8 to the support wall 7, and thus fixation of the end of the heater pipe 2 and fitting of grommet 8 are conducted. This permits elimination of an increase in the number of component parts, simplification of the structure, and suppression of the costs.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle air conditioner.

[0002]

2. Description of the Related Art As is well known, an air conditioner for an automobile is known as follows.
A heater pipe for supplying and discharging hot water is connected and fixed to a heater core disposed in the case, and an end of the heater pipe is made to penetrate through a dash panel and protrude into an engine room. A heater tube branched from the cooling system is connected.

Further, a sealing grommet made of a heat-resistant rubber material is attached to the end of the heater pipe, and the grommet is brought into close contact with a peripheral portion of the dash panel through which the heater pipe has penetrated to seal. I have.

[0004]

Depending on the layout of the heater core in the case, it may be necessary to arrange the heater pipe connected to the heater core along the outside of the case side wall.

When the heater pipe is provided outside the side wall of the case, it is necessary to cover the heater pipe with a cover so that the legs of the occupant do not directly touch the heater pipe.

In addition, since the heater pipe is provided outside the case, it is necessary to mount a grommet on the side wall of the case and mount a dedicated bracket for supporting an end of the heater pipe on the case side wall in order to mount the above-mentioned grommet. is there.

As a result, the number of parts increases, and
The parts management man-hours and the assembly man-hours also increase, which is disadvantageous in cost.

Therefore, the present invention provides an automobile for covering a heater pipe which can suppress the increase in the number of parts and the number of assembling operations as small as possible even when the heater pipe of the heater core is provided outside the case. An object of the present invention is to provide an air conditioner.

[0009]

According to the first aspect of the present invention, there is provided a structure in which a heater pipe connected to a heater core is arranged along the outside of a side wall of a case in which the heater core is provided. The outside of the pipe is covered with a synthetic resin pipe cover, and the pipe cover is fixed to the side wall of the case. A bracket part is integrally formed at an end of the pipe cover, and the heater pipe is formed on the bracket part from one side edge thereof. A notch for inserting the end of the bracket is formed, and a bracket support wall is provided on the side wall of the case, in which a side edge on the side where the notch of the bracket is open engages, and the bracket is inserted into the notch. Insert the end of the heater pipe to engage with the bracket support wall, and attach a sealing grommet at the end of the heater pipe that is in close contact with the edge of the through hole of the dash panel through which the heater pipe passes , The grommet fitted over them to the bracket portion and the bracket support wall, is characterized by fixing the bracket unit to the bracket support wall by the grommet.

According to the second aspect of the present invention, the side wall of the case according to the first aspect covers a foot outlet provided in the side wall of the case, and the foot blowout is provided between the side wall and the case. A synthetic resin cover member constituting a foot duct for guiding temperature-controlled air blown out from an outlet is fixedly provided, and a pipe cover is integrally extended with the cover member.

[0011]

According to the first aspect of the present invention, since the heater pipe provided outside the case side wall is covered with the synthetic resin pipe cover, the heater pipe is exposed and the occupant's leg is exposed. Does not directly touch the heater pipe, and the quality and reliability can be improved.

A bracket is integrally formed at an end of the pipe cover, and an end of the heater pipe is inserted and held in a notch of the bracket, and one side edge of the bracket is attached to a side wall of the case. A grommet inserted into the end of the heater pipe covering the bracket portion and the bracket support wall is fitted into the bracket support wall, and the bracket portion is fixed to the bracket support wall by the grommet. The end of the pipe can be firmly fixed to the side wall of the case, so that the in-vehicle assembling work of the air conditioning unit can be easily performed.

In addition, the bracket portion is formed integrally with the pipe cover, and the bracket support wall projects from the case, so that a special bracket for mounting the heater pipe and the grommet is not required, and the grommet is not required. Since the bracket itself is fixed to the bracket support wall and a dedicated fixing member is not required, the number of parts and the number of assembling work steps can be reduced as much as possible, and the cost can be advantageously obtained. it can.

Further, since a bracket support wall for simply engaging and supporting the bracket portion is simply provided on the case side, the structure of the mold for molding the case does not become complicated. It is possible to avoid hindering the formability without hindering the removal.

According to the invention described in claim 2, according to claim 1
In addition to the effects of the invention, the pipe cover is integrally provided with the cover member forming the foot duct outside the case side wall, so that the number of parts can be reduced and the cost can be further advantageously obtained. .

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings.

1 to 5, reference numeral 1 denotes a case of an air conditioning unit, and a heater pipe H for supplying and discharging hot water is connected to a heater core H disposed in the case 1, and the heater pipe 2 is The pipe is penetrated through the side wall of the case 1 and along the side wall of the case 1 so that its end is located on the front side of the case 1.

The heater pipe 2 is covered with a synthetic resin pipe cover 3 fixed to the side wall of the case 1 by a fastening member 4 such as a screw so as to cover the heater pipe 2 from the outside, and cover substantially the entire pipe length. is there.

The pipe cover 3 is formed in a plate shape bent at a required width along the piping path of the heater pipe 2, and both side edges in the width direction are curled into a flange shape inside to increase rigidity. It is.

A bracket 5 is integrally formed at the end of the pipe cover 3 on the end side of the heater pipe 2.

The bracket 5 has a cutout 6 into which the heater pipe 2 is inserted from one side edge thereof.

On the other hand, a bracket support wall 7 is provided on the side wall of the case 1 at a position corresponding to the bracket portion 5 so as to engage with a side edge of the bracket portion 5 on the side where the cutout portion 6 is opened. .

The bracket portion 5 and the bracket support wall 7 have a vertically long, substantially elliptical shape according to the shape of the grommet 8 so that a grommet 8 described later can be fitted in a state in which they are in abutting engagement. It is formed so that it becomes.

The notch 6 of the bracket 5 is
The pipe cover 3 is formed so as to open in the mounting direction of the case 1, and when the pipe cover 3 is applied to the side wall of the case 1, the heater pipe 2 is inserted into the notch 6 of the bracket 5 in the mounting direction. I'm trying to get in.

Reference numeral 8 denotes a grommet which is in close contact with the periphery of the through hole 16 of the dash panel 15 through which the end of the heater pipe 2 penetrates and seals around the through hole 16. The grommet 8 is made of a heat-resistant rubber material. A pipe insertion hole 9 which is formed and through which the heater pipe 2 is inserted is formed.

The pipe insertion hole 9 is formed to have a diameter smaller than the outer diameter of the end of the heater pipe 2. When the end of the heater pipe 2 is inserted into the pipe insertion hole 9, the end of the heater pipe 2 is closed. The heater pipe is in close contact with the outer periphery to seal the heater pipe insertion portion.

The grommet 8 is connected to the pipe cover 3.
When the bracket 5 is brought into contact with the bracket support wall 7, the bracket 5 and the bracket support wall 7 are
It is formed in an oval cap shape so as to cover and fit these.

This grommet 8 is inserted and arranged at the end of the heater pipe 2 through a pipe insertion hole 9, and the pipe cover 3 is provided.
The side edge of the bracket portion 5 is fitted into the bracket portion 5 and the bracket support wall 7 in a state where the heater pipe 2 is inserted into the notch portion 6 and is brought into abutment engagement with the bracket support wall 7. Then, the bracket portion 5 is fixed to the bracket support wall 7 by the grommet 8.

In this embodiment, the pipe cover 3 is attached to the outside of the side wall of the case 1 by the foot duct 12.
And a rear end portion of the heater pipe 2 is integrally formed with the cover member 10 made of synthetic resin.
0, and extends into the foot duct 12 so as to communicate with the heater core H.

The cover member 10 is formed to have a substantially U-shaped cross section. The cover member 10 covers the foot outlet 11 provided on the side wall of the case 1 and is fixed to the outer surface of the side wall of the case 1 with a fastening member 14 such as a screw. A foot duct 12 between the side wall of the case 1 and a nozzle portion at the lower side of the cover member 10 for blowing the temperature-controlled air blown out from the foot outlet 11 to the feet of the occupant. 13 is formed.

A part of the lower heater pipe 2 is piped along one lower edge of the nozzle portion 13 opened to the side surface of the cover member 10, while the lower edge of the nozzle portion 13 is As shown in FIG. 6, a curling portion 13a that covers the upper side of the heater pipe 2 is provided, and the hot air flowing through the foot duct 12 flows along the curling portion 13a as indicated by the arrow in FIG. The part 13 is directed in the direction of the foot of the occupant to facilitate blowing.

According to the structure of the above embodiment, case 1
Is covered with a synthetic resin pipe cover 3, so that the heater pipe 2 is exposed to the passenger compartment and the legs of the occupant do not directly touch the heater pipe 2. , Quality and reliability can be improved.

A bracket 5 is integrally formed at the end of the pipe cover 3, and the end of the heater pipe 2 is inserted and held in a notch 6 of the bracket 5, and one end of the bracket 5 is formed. The side edge is the bracket support wall 7 on the side wall of the case 1
A grommet 8 is inserted into the end of the heater pipe 2 so as to cover the bracket portion 5 and the bracket support wall 7 and fix the bracket portion 5 to the bracket support wall 7 with the grommet 8. Since the end of the heater pipe 2 can be firmly fixed to the side wall of the case 1, the end of the heater pipe 2 can be easily inserted into the through hole 16 of the dash panel 15 when the air conditioning unit is mounted on a vehicle. The in-vehicle assembly work of the air conditioning unit can be easily performed.

Moreover, the bracket 5 is provided with the pipe cover 3.
The bracket support wall 7 is integrally formed with the case 1.
And the heater pipe 2 and the grommet 8
A dedicated bracket for mounting the bracket is not required, and the grommet 8 itself fixes the bracket portion 5 to the bracket support wall 7 so that a dedicated fixing member is not required. The number of work steps and the like can be reduced as much as possible, and the cost can be advantageously obtained.

Further, since the bracket support wall 7 for simply engaging and supporting the bracket portion 5 is simply provided on the case 1 side, the mold structure for molding the case 1 does not become complicated. It is possible to avoid obstructing the moldability without hindering the mold release during molding.

Particularly, in the present embodiment, the above-described pipe cover 3 is used.
Is integrally extended with the cover member 10 constituting the foot duct 12 outside the side wall of the case 1, so that the number of parts can be reduced and the cost can be more advantageously obtained.

[Brief description of the drawings]

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

FIG. 2 is a side view of one embodiment of the present invention.

FIG. 3 is a sectional view of a grommet mounting portion according to the embodiment of the present invention.

FIG. 4 is a view taken in the direction of the arrow A in FIG. 3;

FIG. 5 is a sectional view taken along the line BB in FIG. 4;

FIG. 6 is a sectional view taken along line CC of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Case 2 Heater pipe 3 Pipe cover 5 Bracket part 6 Notch part 7 Bracket support wall 8 Grommet 10 Cover member 11 Foot outlet 12 Foot duct 15 Dash panel 16 Through hole

Claims (2)

[Claims] A case (1) in which a heater pipe (2) connected to a heater core (H) is provided with the heater core (H).
A pipe cover (3) made of a synthetic resin, wherein the outside of the heater pipe (2) is arranged along the outside of the side wall of the heater pipe (2).
Then, the pipe cover (3) is fixed to the side wall of the case (1), and a bracket (5) is integrally formed at an end of the pipe cover (3). A notch (6) for inserting an end of the heater pipe (2) from one side edge is formed, and a side of the bracket (5) on the side where the notch (6) is opened on the side wall of the case (1). A bracket support wall (7) with which the edge engages is protruded, and the bracket portion (5) is engaged with the bracket support wall (7) by inserting the end of the heater pipe (2) into the notch (6). At the same time, a grommet (8) for sealing is attached to the end of the heater pipe (2) at the end of the through hole (16) of the dash panel (15) through which the heater pipe (2) penetrates, and the grommet ( 8) to the bracket part (5) and the bracket support wall (7). And fitted me, automotive air conditioning system, characterized in that the fixing bracket portion (5) to the bracket support wall (7) by the grommet (8). 2. A side wall of the case (1) covers a foot outlet (11) provided on a side wall of the case (1), and the foot outlet (11) is provided between the side wall of the case (1) and the case (1). 1
A synthetic resin cover member (10) constituting a foot duct (12) for leading out the temperature-regulated air blown out from 1) is fixed, and the pipe cover (3) is attached to the cover member (1).
2. The device as claimed in claim 1, wherein the first member is integrally extended with the first member.
4. The air conditioner for a vehicle according to claim 1.