JP2012111431A - louver - Google Patents

Abstract

[PROBLEMS] To prevent air leakage from a downstream end of a blower duct and rattling of a louver main body with respect to the blower duct while improving appearance quality and freedom of garnish color. Provided is a louver that can increase the degree, reduce the number of parts, and reduce the manufacturing cost.
A fitting portion of an upstream end portion 24J of a louver main body 24 is fitted into a fitted portion 16 of a downstream end portion 11K of a blower duct 11, and the air blower 1 to the blower duct 10 is fitted. A louver that guides and blows out the blown air to the vehicle interior W1 and prevents the leakage of air from the fitted surface 16M by pressing against the fitted surface 16M of the fitted portion 16 A leakage prevention rib 27 is erected on the fitting portion 26.
[Selection] Figure 5

Description

The present invention
The fitting portion at the upstream end of the louver body is fitted into the fitted portion at the downstream end of the air duct,
The present invention relates to a louver that guides and blows out air blown from an air blower to a blower duct into a passenger compartment.

Conventionally, the fitting portion at the upstream end of the louver body is directly fitted into the fitted portion at the downstream end of the air duct. However, this structure has the following problems.
That is, the downstream end of the air duct that blows air from an air blower such as an HVAC (air conditioner) mounted on the vehicle improves the assemblability of the louver. The opening at the end faces upward and rearward.
In addition, the downstream end of the air duct and the upstream end of the louver body are each provided with a draft, and the former is formed in a tapered cylindrical shape that extends slightly toward the downstream side. On the other hand, the latter is formed in a tapered cylindrical shape that slightly expands toward the upstream side.
For this reason, the fitted surface at the downstream end of the air duct and the fitted surface at the upstream end of the louver body are not parallel.
In such a structure, as in the prior art, in the layout in which the fitting portion at the upstream end of the louver body is directly fitted into the fitted portion at the downstream end of the air duct, the upstream side of the louver is arranged. A gap was formed between the end portion and the downstream end portion of the air duct, and air leakage from the gap, looseness of the louver, etc. were likely to occur.
In order to solve this problem, as shown in FIG. 7, the louver body 24 of the louver 20 is assembled to the garnish 30, and the fitting cylinder portion 30A of the garnish 30 is attached to the downstream end 10K of the air duct 10 in the assembled state. The garnish 30 is interposed between the downstream end 10K of the air duct 10 and the upstream end 24J of the louver main body 24. Reference numeral 25 in FIG. 7 denotes a lateral fin of the louver 20.
As another means, a urethane packing material is attached to the upstream end surface of the louver body, and the upstream side end surface of the louver body and the downstream side provided on the enlarged diameter end portion on the downstream side of the air duct are arranged. There were means for interposing a packing material between the facing stepped surface and means for laminating resins having different coefficients of thermal expansion on the fitting portion (see Patent Document 1).

JP 2010-36752 A

However, with the means for interposing the garnish between the downstream end of the air duct and the upstream end of the louver body, the garnish may be seen by the occupant between the adjacent fins of the louver, When the color of the garnish is different, for example, when the louver is black, the air duct is black, and the garnish is white, the appearance is poor. Therefore, it is necessary to consider the color of the garnish, such as making the color of the air duct and the garnish the same, and the degree of freedom of the color of the garnish is low.
Further, the means for interposing the packing material between the upstream end face of the louver main body and the stepped face facing the downstream side provided at the diameter-expanded end downstream of the air duct increases the number of parts. Further, the number of assembling steps for assembling the packing material has increased, and the product cost for the material cost of the packing material has increased. The means for laminating resins having different coefficients of thermal expansion on the fitting part has the same problem.
The present invention has been made in view of the above situation, and its purpose is to leak air between the downstream end of the air duct and the upstream end of the louver body, or the louver body with respect to the air duct. Although it has a structure that can prevent rattling, the appearance quality can be improved, the degree of freedom of garnish color can be increased, the number of parts can be reduced, and the production cost can be reduced. Is to provide

The feature of the present invention is that
The fitting portion at the upstream end of the louver body is fitted into the fitted portion at the downstream end of the air duct,
A louver that guides and blows out air blown from the air blower to the blow duct into the passenger compartment.
An air leakage prevention rib that presses against a mating surface of the mating portion and prevents air leakage from the mating surface is provided on the mating portion. (Claim 1)

According to this configuration, the air leakage prevention ribs erected on the fitting portion at the upstream end of the louver body are fitted to the fitting surface of the fitting portion provided at the downstream end of the air duct. Because of the pressure contact, air leakage from between the downstream end of the blower duct and the upstream end of the louver body can be prevented by the air leakage prevention rib, thereby preventing the louver body from rattling. can do.
In addition, since no garnish is interposed between the downstream end of the air duct and the upstream end of the louver body, there is a problem that the garnish can be seen by passengers from between adjacent fins of the louver. There is no. Therefore, the appearance quality of the louver can be improved as compared with the structure in which the garnish is interposed between the downstream end of the air duct and the upstream end of the louver body. Furthermore, it is not necessary to match the color of the garnish with the color of the air duct or the color of the louver, and the degree of freedom of the color of the garnish can be increased.
And since no packing material is interposed between the downstream end of the air duct and the upstream end of the louver body, the increase in the number of parts and the increase in weight can be suppressed, and the assembly man-hour can be reduced. The increase can be suppressed, and the increase in the product cost corresponding to the material cost can be suppressed. (Claim 1)

In the present invention,
When the air leakage prevention rib is erected over the entire circumference of the fitting portion, air leakage from between the downstream end portion of the air duct and the upstream end portion of the louver main body is prevented from occurring in the air. The leakage prevention rib can more reliably prevent the looseness of the louver body. (Claim 2)

In the present invention,
The air leakage prevention rib is located on the downstream side of the louver body from the opening end on the upstream side of the louver body,
A guide rib for guiding the fitted portion to the air leakage prevention rib is erected on the fitting portion of the louver body between the opening end and the air leakage prevention rib,
If the guide rib is formed in a triangular rib shape having a height that is higher toward the air leakage prevention rib, the following effects can be achieved. (Claim 3)

Since the guide rib for guiding the fitted portion to the air leakage prevention rib is erected in the fitting portion of the louver body between the opening end and the air leakage prevention rib, the guide rib is located upstream of the louver body. When the fitting part at the end of the inner part is fitted into the fitted part at the downstream end of the air duct, the guide rib exhibits a guide function so that the fitting part can be smoothly inserted into the fitted part. It can be fitted and the assembling property can be improved.
In addition, since the guide rib is formed in a triangular rib shape having a height that is higher toward the air leakage prevention rib, the guide function can be sufficiently exerted while having a simple rib structure. (Claim 3)

In the present invention,
If the guide rib is connected to the air leakage prevention rib, the rigidity of the louver body can be increased, the deformation of the louver body can be prevented, and the assembly of the louver body to the air duct can be improved. it can. Moreover, the rigidity of the fitting part of the louver body can be increased, the louver body can be prevented from being thermally deformed by the hot and cold air flowing inside, and air leakage can be prevented more reliably. (Claim 4)

In the present invention,
When the top surface of the air leakage prevention rib is formed as an inclined surface having a longer distance from the outer peripheral surface of the louver body toward the downstream side of the louver body, the following effects can be achieved. (Claim 5)

  Since the top surface of the air leakage prevention rib is formed as an inclined surface having a longer distance from the outer peripheral surface of the louver body toward the downstream side of the louver body, it blows the fitting portion at the upstream end of the louver body. The top surface of the air leakage prevention rib exhibits a guide function when fitted into the fitted portion at the downstream end of the duct, so that the fitted portion is smoothly fitted into the fitted portion. As a result, the assemblability can be improved. Moreover, the adhesiveness after the said fitting part fits to the to-be-fitted part can be improved. (Claim 5)

According to the present invention,
Although it has a structure that can prevent air leakage from the downstream end of the air duct and the upstream end of the louver body and the looseness of the louver body against the air duct, the appearance quality can be improved. It was possible to provide a louver that can increase the degree of freedom of the garnish color, reduce the number of parts, and reduce the production cost.

Exploded perspective view of automobile air blower structure Perspective view showing garnish and louver before assembly A perspective view showing a vent duct and a garnish with a louver assembled Perspective view showing vent duct and louver Vertical sectional view of assembled vent duct, garnish and louver Perspective view of the upstream end of the louver Longitudinal sectional view of conventional technology

Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
FIG. 1 shows an air blowing structure of an automobile. This blower structure is equipped with HVAC1 (corresponding to Heating Ventilating Air-Conditioning, an air blower), blows air adjusted in temperature by HVAC1 to a vent duct 10 (corresponding to a blower duct), and is provided on an instrument panel described later. Each louver (a pair of left and right inner louvers 20 and a pair of left and right outer louvers) is blown out into the vehicle interior W1 (see FIG. 5).

  The HVAC 1 includes an air intake part 2, an air adjustment part 3, and an air blowing part 4. The HVAC 1 is mounted between the dash panel 5 and the instrument panel and supported by the floor panel and the dash panel 5.

  As shown in FIGS. 1 to 3, a horizontally-long rectangular garnish 30 is attached to a vertical wall portion of an instrument panel facing an occupant. The garnish 30 is formed with a central opening 38 for attaching the operation panel so as to be located on the left and right central sides of the vehicle, and a pair of left and right inner openings 31 (positioned on the inner side in the vehicle width direction) on both sides of the central opening 38. Opening) is formed. A pair of left and right inner louvers 20 positioned inside in the vehicle width direction are attached to the pair of left and right inner openings 31, respectively.

  Moreover, the left side opening part is formed in the left end part of the vertical wall part of an instrument panel, and the right side opening part is formed in the right end part of the vertical wall part. Further, an outer louver is attached to the outer opening 32 (see FIG. 1) of the garnish 30 that overlaps the right opening, and another outer louver is attached to the outer opening of another garnish that overlaps the left opening. .

  A pair of left and right inner louvers 20 and a pair of left and right outer louvers are connected to the air outlet of the HVAC 1 through the vent duct 10. Each louver 20 guides and blows out the air blown from the HVAC 1 to the vent duct 10 into the vehicle interior W1 (see FIG. 5).

  As shown in FIGS. 1 and 3, the vent duct 10 includes a pair of left and right inner duct portions 11 and a pair of left and right outer duct portions 12 (the left outer louver is not drawn in FIG. 3). The pair of inner louvers 20 are connected to the downstream end portions 11K of the pair of left and right inner duct portions 11 (corresponding to the downstream end portions of the air ducts) separately, and the pair of left and right outer louvers are a pair of left and right outer ducts. The end portion 12K on the downstream side of the portion 12 is connected in communication with each other.

[Structure of inner louver 20 and mounting structure of inner louver 20]
As shown in FIGS. 4 and 5, the inner louver 20 includes a vertically long rectangular tube-shaped louver main body 24, a plurality of horizontal fins 25 spanned on both side walls 24 </ b> S of the louver main body 24, and a plurality of horizontal fins 25. And a plurality of vertical fins 29 spanned between the upper and lower walls 24T of the louver main body 24.

  A portion of the louver body 24 on the downstream side of the center in the axial direction is formed in a tapered cylindrical shape that spreads toward the downstream side. Further, the portion of the louver body 24 on the upstream side of the center in the axial direction is formed in a tapered cylindrical shape that widens toward the upstream side. The end 24K on the downstream side of the louver body 24 has a larger diameter than the remaining portion.

  The plurality of horizontal fins 25 are configured to be rotatable about a horizontal axis, and the plurality of vertical fins 29 are configured to be rotatable about a vertical axis. In addition, a tongue-like operation piece 35 protrudes from the pair of adjacent horizontal fins 25 on the upper and lower center sides of the plurality of horizontal fins 25 to the vehicle interior side W1. By operating the operating piece 35 up and down, the plurality of horizontal fins 25 swing up and down around the horizontal axis, and by operating the operating piece 35 left and right, the plurality of vertical fins 29 are By swinging left and right around the vertical axis, the air blowing direction into the vehicle interior W1 is adjusted.

  A plurality of engaging claws are formed at the downstream end 24K of the louver main body 24, and the plurality of engaging claws are individually engaged with a plurality of engaging portions formed in the inner opening 31 of the garnish 30. Match.

  As shown in FIGS. 5 and 6, a fitting portion 26 is provided on the outer peripheral portion of the upstream end portion 24 </ b> J of the louver main body 24, and the fitting portion 26 is the downstream end portion 11 </ b> K of the inner duct portion 11. It is fitted in the fitted part 16 provided in. And the air leak prevention rib 27 which press-contacts to the to-be-fitted surface 16M of the to-be-fitted part 16 of the inner duct part 11, and prevents the air leakage from between the to-be-fitted surfaces 16M is the said fitting part. 26 is erected over the entire circumference. The top surface 27T of the air leakage prevention rib 27 is configured as an inclined surface having a longer distance from the outer peripheral surface 24G of the louver body 24 toward the downstream side of the louver body 24.

  As shown in FIG. 5, the air leakage prevention rib 27 is located on the downstream side of the louver body 24 with respect to the opening end 24 </ b> J <b> 1 on the upstream side of the louver body 24. A plurality of guide ribs 28 for guiding the fitted portion 16 of the inner duct portion 11 to the air leakage prevention rib 27 of the louver body 24 are fitted into the louver body 24 between the opening end 24J1 and the air leakage prevention rib 27. It is erected at the joint part 26.

  The plurality of guide ribs 28 are distributed over the entire circumference of the fitting portion 26 of the louver body 24. In the present embodiment, as an example, two pieces are provided on the upper wall 24T and the lower wall 24T of the louver body 24, and three pieces are provided on the pair of left and right side walls 24S (the number of guide ribs 28 is limited to the above number). Or any other number).

  The guide rib 28 is formed in a triangular rib shape having a height that is higher toward the air leakage prevention rib 27 side (downstream side) and extends in the axial direction of the louver body 24, and the top of the guide rib 28 on the air leakage prevention rib 27 side. The surface is smoothly connected to the top surface 27T of the air leakage prevention rib 27. The downstream end portion 28K of the guide rib 28 is connected to the upstream wall surface 27S1 of the wall surfaces 27S1, 27S2 of the air leakage prevention rib 27.

With the above structure,
(1) An air leakage prevention rib 27 erected on the fitting portion 26 of the upstream end 24J of the louver body 24 is provided on the downstream end 11K of the inner duct portion 11 of the vent duct 10. It press-contacts to the to-be-fitted surface 16M of the fitting part 16. FIG. As a result, air leakage from between the fitting portion 26 and the fitted portion 16 to the downstream side can be prevented by the air leakage prevention rib 27, and rattling of the louver body 24 can be prevented. .
Further, since the garnish 30 is not interposed between the downstream end portion 11K of the inner duct portion 11 and the upstream end portion 24J of the louver body 24, the louver 20 is adjacent to the horizontal fins 25 and the vertical fins 29. There is no problem that the garnish 30 of different colors can be seen by the occupant from between the matching objects.
Accordingly, the appearance quality of the louver 20 can be improved as compared with the structure in which the garnish 30 is interposed between the downstream end portion 11K of the inner duct portion 11 and the upstream end portion 24J of the louver body 24. it can. Furthermore, it is not necessary to match the color of the garnish 30 with the color of the vent duct 10 or the color of the louvers 20, and the degree of freedom of the color of the garnish 30 can be increased.
Since no packing material is interposed between the upstream end 24J of the louver body 24 and the downstream end 11K of the inner duct portion 11, the increase in the number of parts and the increase in weight can be suppressed. In addition, it is possible to suppress an increase in assembly man-hours and to suppress an increase in product cost corresponding to material costs.

(2) Since the air leakage prevention rib 27 is erected over the entire circumference of the fitting portion 26, the downstream end portion 11 </ b> K of the inner duct portion 11 and the upstream end portion 24 </ b> J of the louver body 24. The air leakage prevention rib 27 can more reliably prevent air leakage between the louver main body 24 and the louver main body 24 from rattling.

(3) A guide rib 28 for guiding the fitted portion 16 to the air leakage prevention rib 27 is erected on the fitting portion 26 of the louver main body 24 between the opening end 24J1 and the air leakage prevention rib 27. Therefore, when the fitting portion 26 of the upstream end portion 24J of the louver main body 24 is fitted into the fitted portion 16 of the downstream end portion 11K of the inner duct portion 11, the guide rib 28 exhibits a guide function. Thus, the fitting portion 26 can be smoothly fitted into the fitted portion 16 and the assembling property can be improved.
Further, since the guide rib 28 is formed in a triangular rib shape having a height that is higher toward the air leakage prevention rib 27 side, the guide function can be sufficiently exerted while having a simple rib structure.

(4) Since the guide rib 28 is connected to the air leakage prevention rib 27, the rigidity of the louver body 24 can be increased, the deformation of the louver body 24 can be prevented, and the vent duct 10 ( The assembling property to the downstream end portion 11K) of the inner duct portion 11 can be improved. Further, the rigidity of the fitting portion 26 of the louver main body 24 can be increased, and the louver main body 24 can be prevented from being thermally deformed by hot and cold air flowing through the louver main body 24, thereby preventing air leakage more reliably. it can.

(5) Since the top surface 27T of the air leakage prevention rib 27 is configured as an inclined surface having a longer distance from the outer peripheral surface 24G of the louver body 24 toward the downstream side of the louver body 24, the upstream end of the louver body 24 When the fitting portion 26 of the portion 24J is fitted into the fitted portion 16 of the end portion 11K on the downstream side of the inner duct portion 11, the top surface 27T of the air leakage prevention rib 27 exhibits a guide function and is fitted. The part 26 can be smoothly fitted into the fitted part 16, and the assembling property can be improved. Moreover, the adhesiveness after the fitting part 26 fits to the to-be-fitted part 16 can be improved.

1 Air blower (HVAC)
10 Air duct (vent duct)
11K Downstream end of the air duct (downstream end of the inner duct portion of the vent duct)
16 fitted portion 16M fitted surface 24 louver body 24J upstream end 24J1 of louver body 24G open end 24G outer surface 26 of louver body fitting portion 27 air leakage prevention rib 27T top surface 28 of air leakage prevention rib guide rib W1 Car interior

Claims (5)

The fitting portion at the upstream end of the louver body is fitted into the fitted portion at the downstream end of the air duct,
A louver that guides and blows out air blown from the air blower to the blow duct into the passenger compartment.
A louver in which an air leakage prevention rib is provided on the fitting portion so as to press against the fitting surface of the fitting portion and prevent air leakage from between the fitting surface.   The louver according to claim 1, wherein the air leakage prevention rib is erected over the entire circumference of the fitting portion. The air leakage prevention rib is located on the downstream side of the louver body from the opening end on the upstream side of the louver body,
A guide rib for guiding the fitted portion to the air leakage prevention rib is erected on the fitting portion of the louver body between the opening end and the air leakage prevention rib,
The louver according to claim 1 or 2, wherein the guide rib is formed in a triangular rib shape having a height dimension higher toward the air leakage prevention rib.   The louver according to claim 3, wherein the guide rib is connected to the air leakage prevention rib.   The louver according to any one of claims 1 to 4, wherein the top surface of the air leakage prevention rib is configured as an inclined surface having a longer distance from the outer peripheral surface of the louver body toward the downstream side of the louver body.

Images