JP3085302B1 - Defroster nozzle - Google Patents

Abstract

An object of the present invention is to provide a vehicle defroster nozzle capable of ensuring a sufficient air flow to a side defroster. A flat lower nozzle (2) having a fan-shaped width extending from an air inlet (10) at a lower end to an upper end opening (20).
And upper nozzles provided with branch passages 3b and 3c to side defrosters, which are flat and wide in a fan shape from the lower end opening 30 to the upper air outlet 11 and are partitioned by partition walls 33 on both left and right sides in the width direction. 3 and an upper end opening 20 of the lower nozzle 2 having the air intake 10 connected to the air conditioning unit 6 provided on the vehicle body, and a lower end opening of the upper nozzle 3 having the air outlet 11 connected to the opening 71 of the instrument panel 7. In the defroster nozzle 1 of the vehicle in which the portion 30 is connected by abutment, a rib 4 that intersects with the wind current is provided in the lower nozzle 2 at the center of the upper end of one surface 22 of the opposed inner surface of the lower nozzle 2 so as to protrude. The part is divided right and left and guided to the branch passages 3b and 3c of the upper nozzle 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a defroster nozzle which blows air onto an inner surface of a windshield of a vehicle to remove fogging, and more particularly to a defroster nozzle provided with a branch passage to a side defroster which blows air onto an inner surface of a door glass.

[0002]

2. Description of the Related Art Generally, this type of defroster nozzle is
The air conditioner is provided between the air conditioning unit and the opening on the upper surface of the instrument panel, and is formed of a flat cylindrical body having a fan-shaped width extending from the air conditioning unit toward the opening. Then, air from the air conditioning unit is blown out from the instrument panel opening toward the inner surface of the windshield at a wide angle, and air is blown from the branch passages provided on the left and right sides of the defroster nozzle to the side defrosters for the left and right door glasses. I try to send.

FIG. 4 shows a vertical cross section of a typical conventional defroster nozzle. The defroster nozzle 1 is divided into upper and lower parts.
The air inlet 10 at the lower end is connected to the lower nozzle 2A connected to the air conditioning unit 6, and the air outlet 11 at the upper end is connected to the upper nozzle 3 connected to the periphery of the opening of the instrument panel 7. When installing the instrument panel 7 on the vehicle body, the air conditioning unit 6 fixed to the vehicle body
The upper nozzle 3 previously connected to the instrument panel 7 is connected to the upper end opening 20 of the lower nozzle 2A previously connected to the lower nozzle 2A.
The lower nozzle 2A and the upper nozzle 3 are connected to each other by abutting the lower end opening 30 of the lower nozzle 2A. In this case, the lower nozzle 2
A and a sponge-like sealing member 5 are attached to one of the flange portions 23 and 35 formed in the opening portions 20 and 30 of the upper nozzle 3.
Are provided, and the sealing members 5 are pressed against each other.

[0004] The upper nozzle 3 is formed with branch passages 3b and 3c that are separated from the main body passage 3a by partition walls 33 on both left and right sides in the width direction and that send air to the side defroster (not shown). However, the width of the defroster nozzle 1 is widened from the air intake port 10 side to the air outlet port 11 side, and the amount of air flowing into the left and right branch passages 3b and 3c is insufficient. Partition wall 3
3, a partition wall 26 extending from the vicinity of the air inlet 10 to the upper end opening 20 is formed on each side of the lower nozzle 2A to form passages 2a and 2b, and air is supplied to the branch passages 3b and 3c of the upper nozzle 3. I try to send.

[0005]

The defroster nozzle 1 has a slight lateral displacement at the connecting portion between the lower nozzle 2A and the upper nozzle 3 due to a variation in mounting accuracy when the instrument panel 7 is installed on the vehicle body. May occur. However, the airflow of the air flowing into each of the branch passages 3b and 3c is limited to the airflow passing through each of the passages 2a and 2b of the lower nozzle 2A. There is a possibility that the air volume of the air sent to is insufficient. For example, as shown in FIG. 5, when the upper nozzle 3 is displaced to the left (branch passage 3b side) with respect to the lower nozzle 2A, in the branch passage 3b side, a vertical direction is provided between the upper end of the partition wall 26 and the lower end of the partition wall 33. A gap can be formed, and the air flow in the passage 2a is separated from the gap by the main body passage 3a.
And the air cannot be sufficiently sent to the branch passage 3b. On the other hand, on the branch passage 3c side, the lower end opening 3
The flange portion 35 protrudes to create a resistance to the flow of air, and the connecting portion between the passage 2b and the branch passage 3c becomes narrow, so that air cannot flow smoothly from the passage 2b to the branch passage 3c. 3c cannot be sent enough air. As described above, the function of the side defroster is reduced if the air volume of each branch passage 3b, 3c cannot be sufficiently secured.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a defroster nozzle capable of ensuring a sufficient amount of air to the side defroster even if the connection between the lower nozzle and the upper nozzle is displaced.

[0007]

SUMMARY OF THE INVENTION The present invention is a defroster nozzle for blowing air toward the inner surface of a windshield of a vehicle and diverting the air to a side defroster, which is directed from an air intake at a lower end to an upper end opening. The lower nozzle consists of a flat lower nozzle that widens in a fan shape, and the flat upper nozzle that widens in a fan shape from the lower end opening toward the air outlet at the upper end.The upper nozzle has partition walls on both left and right sides in the width direction. A branch passage for dividing the air into the side defroster, the upper end opening of a lower nozzle connecting the air intake to an air conditioning unit provided in the vehicle body, and an opening forming the air outlet in an instrument panel. In the defroster nozzle connected by abutting the lower end opening of the upper nozzle connected to the part, In Anozuru, to project the ribs intersecting the center air wind flow of the upper end portion of one surface of the opposing inner surfaces of Roanozuru (claim 1). The height of the rib is set to a quarter to two-fifths of the distance between the opposed inner surfaces of the nozzle, and the length of the rib is set so that the right and left ends of the rib are on or within the extension of the partition wall of the upper nozzle. (Claim 2).

A part of the air flow in the lower nozzle is diverted in the left-right direction along the rib by the rib protruding into the lower nozzle and flows to the left and right branch passages of the upper nozzle. The amount of air sent to the branch passage of the upper nozzle can be sufficiently ensured without forming a passage communicating with the branch passage. Further, there is no inconvenience caused by the inconsistency between the branch passage of the upper nozzle and the passage of the lower nozzle as in the related art.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. FIG. 1 shows a case where the defroster nozzle 1 of the present invention is applied to a cab-over type vehicle such as a small truck. FIG. 1 (A) shows a longitudinal section in the width direction, and FIG. 1 (B) shows a longitudinal section in the front-rear direction. The defroster nozzle 1 has an air conditioning unit 6
Is a cylindrical body of a synthetic resin connecting the connection opening 61 and the upper surface opening 71 of the instrument panel 7 in the vertical direction, and has a fan-shaped width extending from the air intake port 10 at the lower end to the air outlet port 11 at the upper end. It is molded into a flat shape. The defroster nozzle 1 is vertically divided into a lower nozzle 2 and an upper nozzle 3, and has a structure for connecting both.

The upper nozzle 3 is a fan-shaped cylinder whose left and right sides are widened from the lower end opening 30 to the upper air outlet 11, and the front wall 31 and the rear wall 32 face each other substantially in parallel. The lower portion of the rear wall 32 is formed in an inclined shape projecting rearward, and the upper nozzle 3 is connected to the air outlet 11.
The width before and after the lower end opening 30 is wider than the width before and after.

On both left and right sides of the upper nozzle 3, branch passages 3b and 3c for branching air from a main passage 3a and diverting air to a side defroster for blowing air to the inner surface of the door glass.
Is formed. Each of the branch passages 3b and 3c is separated from the main body passage 3a by a partition wall 33 provided inside the nozzle.

A flange portion 34 is formed at the opening edge of the air outlet 11 of the upper nozzle 3 so as to protrude outward around the entire outer periphery. The upper nozzle 3 is connected to the air outlet 11 from below through the opening 7 of the instrument panel 7.
The flange portion 34 is overlap-welded around the opening 71 of the instrument panel 7 and fixedly connected to the instrument panel 7. In addition, the lower end opening 3
0, the lower nozzle 2 protrudes outward around the entire outer periphery of the opening edge.
And a flange portion 35 for abutting the same.

The lower nozzle 2 has an air inlet 10 at the lower end.
It is a flat cylindrical body in which the front wall 21 and the rear wall 22 face each other almost in parallel in a fan shape in which the left and right widths are widened toward the upper end opening 20 from the front. In addition, the lower portions of the front wall 21 and the rear wall 22 are formed to be inclined forward and rearward, respectively, and the lower nozzle 2 has a wider width before and after the air inlet 10 than before and after the upper end opening 20. I have.

The upper end opening 20 of the lower nozzle 2 has a dimension substantially matching the lower end opening 30 of the upper nozzle 3. The flange portion 23 corresponding to the flange portion 35 of FIG. A sponge-like crushable and deformable seal member 5 is adhered to the upper surface of the flange portion 23 over the entire periphery of the opening edge.

Inside the lower nozzle 2, an upper end opening 20 is provided.
A rib 4 protrudes from the rear wall 22 into the nozzle along the inner edge of the opening. The rib 4 has a vertical wall shape protruding from the upper edge of the rear wall 22 in a direction substantially perpendicular to the surface, and is formed integrally with the rear wall 22. The height of the rib 4 is the front wall 21 and the rear wall 22.
The height of the rib 4 is set to approximately one-third of the distance between the opposed inner surfaces, and the left and right ends of the rib 4 are connected to the upper end opening 20 of the lower nozzle 2 and the lower end opening 30 of the upper nozzle 3. In this case, the upper nozzle 3 is positioned inside the extension of each partition wall 33, and the length of the rib 4 is slightly smaller than the dimension between the lower ends of the left and right partition walls 33.

At the opening edge of the air intake port 10 of the lower nozzle 2, a flange portion 24 is formed which protrudes outward all around the outer periphery and whose outer periphery is bent downward. The lower nozzle 2 is connected to the upper surface of the air conditioning unit 6 fixed diagonally below the front cowl 8 of the vehicle body. The lower nozzle 2 is connected to the air inlet 10 from above by way of the connection port 6 on the upper surface of the air conditioning unit 6.
1 and is arranged so as to cover the connection port 61 with the flange portion 24, and is screwed at a plurality of places via the sponge-like sealing member 5 (not shown). It is erected on the upper surface of.

When the instrument panel 7 is mounted on the vehicle body, the lower nozzle 2 and the upper nozzle 3 form an upper opening 20 of the lower nozzle 2 and a lower opening 30 of the upper nozzle 3.
Are abutted and connected. That is, the instrument panel 7 is set at a predetermined position of the vehicle body with its front edge abutting against the weather strip 81 at the junction between the upper edge of the front cowl 8 and the lower edge of the windshield 9 of the vehicle body. Thus, the flange portion 23 of the lower end opening 30 of the upper nozzle 3 is attached to the flange portion 23 of the upper end opening 20 of the lower nozzle 2.
5 are brought into contact with each other via the sealing member 5. Then, the instrument panel 7 is fixed by pressing the upper nozzle 3 while crushing the seal member 5.

In the present embodiment, of the air flow that is introduced from the air conditioning unit 6 to the air intake 10 of the defroster nozzle 1 and passes through the lower nozzle 2, the air flow along the rear wall 22 of the lower nozzle 2 The rib 4 protrudes from the wall 22 and diverges right and left, flows along the rib 4 in the nozzle width direction, passes through both ends of the rib 4, and flows into the branch passages 3b and 3c of the upper nozzle 3. On the other hand, the airflow that has passed through the ribs 4 flows directly into the main body passage 3 a of the upper nozzle 3.

As described above, a part of the air flow in the lower nozzle 2 is divided by the ribs 4 and divided into the respective branch passages 3 of the upper nozzle 3.
Since the air is guided to b and 3c, the air flow in each of the branch passages 3b and 3c can be sufficiently ensured, and air with a sufficient air flow can be blown from the side defroster to the inner surface of the door glass to remove the fogging of the glass.

Further, the defroster nozzle 1 does not have a structure in which a partition wall is provided in the lower nozzle 2 to communicate the passage of the lower nozzle 2 with each of the branch passages 3b and 3c of the upper nozzle 3 as in the prior art. Since a part of the air flow is diverted to each of the branch passages 3b and 3c by the provided rib 4, and the length of the rib 4 is made smaller than the dimension between the lower ends of the left and right partition walls 33 of the upper nozzle 3, the lower nozzle 2 Upper opening 20 and lower opening 3 of upper nozzle 3
Even if a lateral displacement occurs at the connecting portion with the ribs 4, the ribs 4 do not move outward from between the lower ends of the two partition walls 33, and the branch passages 3b, 3c
The amount of air flowing to the branch passages 3b and 3c can be smoothly flowed without reducing the amount of air flowing to the air passage or stopping the air flow, and the function of the side defroster does not decrease.

In the present embodiment, the height of the rib 4 is adjusted by the front wall 21 and the rear wall 22 of the upper opening 20 of the lower nozzle 2.
The height of the ribs 4 is in the range of one-fourth to two-fifths of the above-mentioned distance in consideration of the above-mentioned distance and the wind speed of the air flow. Thus, the height at which the balance between the air volume of the main body passage 3a and the air volume of each of the branch passages 3b and 3c is set to be the best.

In the above-described embodiment, the ribs 4 in the lower nozzle 2 are formed in a straight line. However, the ribs 4A shown in FIG. It may be. The rib 4A protrudes from the rear wall of the lower nozzle 2 to the inside of the nozzle in a direction substantially perpendicular to the surface, and symmetrically moves toward the lower end of each partition wall 33 of the upper nozzle 3 from the substantially left and right center position of the upper end of the rear wall. It extends obliquely upward. The left and right ends of the rib 4A are located inside the extension of each partition wall 33 at positions along the upper end opening 20. The horizontal length of the rib 4A is slightly smaller than the dimension between the lower ends of the partition walls 33. is there. The height of the rib 4A is set to a height in a range of one-fourth to two-fifths of the interval between the opposing inner surfaces of the lower nozzle 2.

According to this, the rib 4A serves as a guide plate for guiding a part of the air flow in the lower nozzle 2 to each of the branch passages 3b and 3c, so that the same operation and effect as in the previous embodiment can be obtained. Smooth branching to the branch passages 3b and 3c can be performed.

Further, as shown in FIG. 3, the ribs in the lower nozzle 2 may have an inverted triangular shape, and the lower end apex 42 may be a convex rib 4B having the air intake 10 directed to the lower end. The convex rib 4B is formed by bulging an intermediate portion of the rear wall 22 of the lower nozzle 2 into the nozzle. The convex rib 4B has a lower end vertex 4
Reference numeral 2 denotes an inverted isosceles triangle having an upper side 43 along the opening edge of the upper end opening 20, which is located substantially at the center on the left and right sides of the upper end of the rear wall 22. It is located inside the extension of 33, and the upper side 4
The length of 3 is slightly smaller than the dimension between the lower ends of both partition walls 33. The left and right oblique sides 44 connecting the lower end vertex 42 and the terminals on both sides of the upper side 43 are formed in a vertical wall shape protruding from the rear wall 23 in a direction substantially perpendicular to the plane. In addition, the height of the convex rib 4B is set to a height in a range of か ら to 分 の of the interval between the opposed inner surfaces of the lower nozzle 2.

According to this, the right and left oblique sides 44 of the protruding rib 4B cause a part of the air flow in the lower nozzle 2 to be part of each of the branch passages 3b and 3b.
As a guide plate for diverting and guiding to 3c, the same operation and effect as in the previous embodiment can be obtained, and the moldability of the lower nozzle 2 by the molding is improved.

In each of the above embodiments, the ribs 4, 4A, 4B are provided on the rear wall 22 of the lower nozzle 2. However, the present invention is not limited to this, and the ribs 4, 4A, 4B may be provided on the front wall 21.

[0027]

According to the present invention, a rib is provided which projects into the lower nozzle of the defroster nozzle and guides a part of the air flow to the left and right branch passages of the upper nozzle without partitioning the inside of the lower nozzle of the defroster nozzle by a partition wall. Even if a lateral displacement occurs at the connecting portion between the lower nozzle and the upper nozzle due to a variation in assembly, a sufficient amount of air can be smoothly flown to each branch passage of the upper nozzle, and the function of the side defroster can be prevented from lowering.

[Brief description of the drawings]

FIG. 1 shows a defroster nozzle of the present invention.
(A) is a longitudinal sectional view in the width direction of the defroster nozzle, FIG.
(B) is a longitudinal sectional view in the front-rear direction of the defroster nozzle.

FIG. 2 is a longitudinal sectional view in the width direction of another defroster nozzle of the present invention.

3A and 3B show still another defroster nozzle of the present invention. FIG. 3A is a longitudinal sectional view in the width direction, and FIG. 3B is a longitudinal sectional view in the front-rear direction.

FIG. 4 is a longitudinal sectional view in the width direction of a conventional defroster nozzle.

FIG. 5 is a longitudinal sectional view of a main part in a width direction showing a state where a connecting portion between a lower nozzle and an upper nozzle of a conventional defroster nozzle is laterally displaced.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 defroster nozzle 10 air intake 11 air outlet 2 lower nozzle 20 upper end opening 22 one surface (rear wall) of opposed inner surface 3 upper nozzle 3b, 3c branch passage 30 lower end opening 33 partition wall 4, 4A, 4B rib 6 air conditioning Unit 7 Instrument panel 71 Opening

Claims (2)

(57) [Claims] 1. A defroster nozzle for blowing air toward the inner surface of a windshield of a vehicle and diverting the air to a side defroster, wherein the width of the defroster nozzle widens in a fan shape from an air intake at a lower end to an opening at an upper end. A lower nozzle, and a flat upper nozzle that widens in a fan shape from the lower end opening toward the upper air outlet, and the upper nozzle is partitioned by partition walls on both left and right sides in the width direction to the side defroster. A branch passage for diverting air, an upper end opening of the lower nozzle connecting the air intake to an air conditioning unit provided in the vehicle body, and an upper nozzle connecting the air outlet to an opening formed in the instrument panel. In the defroster nozzle in which the lower end opening is abutted and connected, a lower nozzle is provided in the lower nozzle. A defroster nozzle characterized in that a rib intersecting with the air flow protrudes from the center of the upper end of one of the opposed inner surfaces of the nozzle. 2. The height of the rib is one-fourth to two-fifth of the distance between the opposed inner surfaces of the nozzle, and the length of the rib is determined by the right and left ends of the left and right partition walls of the upper nozzle. 2. The defroster nozzle according to claim 1, wherein the length is located on an extension line or inside the extension line.