JPH0328253Y2 - - Google Patents

Description

[Detailed explanation of the idea]

[Purpose of the invention] (Field of industrial application) The present invention relates to a ventilator for air conditioning in a vehicle, etc., and particularly relates to a louver for adjusting wind direction. (Prior Art) Conventionally, as shown in, for example, Japanese Utility Model Application Publication No. 58-135625, a plurality of front louvers and a plurality of rear louvers are rotated in the left-right direction or up-down direction, respectively. A ventilator is known that has a structure that adjusts the direction of airflow. Here, one example of such a conventional ventilator will be explained in more detail based on FIG. 4. 1 is the case body, which is formed into a rectangular tube shape.
The front side (right side in the figure) is the blow-off opening 2. Inside this blow-off opening 2, a plurality of flat front louvers 3 are arranged parallel to each other in the left-right direction and are rotatable in conjunction with each other in the left-right direction. That is, each of these front louvers 3 has a shaft portion 4 formed protruding from the upper and lower ends thereof, which is fitted into a bearing hole 5 formed on the upper surface and lower surface of the case body 1, so that the case body 1 It is rotatably supported by the body 1 and rotates in conjunction with a connecting body (not shown). Further, behind the front louver 3 in the blow-off opening 2, a plurality of, for example, three, flat rear louvers 6 arranged in the vertical direction are arranged in parallel with each other and rotate in conjunction with each other in the vertical direction. possible. That is, each of these rear louvers 6 is pivotally connected between both side surfaces of the case body 1 by shaft portions 7 formed protruding from both ends thereof, and is rotated in conjunction with a connecting body (not shown). I'm starting to do that. The plurality of front louvers 3 constitute a front louver group 8, and the plurality of rear louvers 6 constitute a rear louver group 9. Then, the airflow flowing parallel to the axial direction c from the rear side (left side in the figure) of the case body 1 is changed in the vertical direction by the rear louver group 9,
Then, the front louver group 8 changes the direction in the left-right direction and blows out in a predetermined direction. Further, the wind direction is adjusted by rotating each of the louver groups 8 and 9, respectively. In addition, each louver group 8,
9 is rotated by manual or mechanical means. (Problems to be solved by the invention) In the structure of the conventional rear louver 6 as described above, the rear louver group 9 is tilted at the maximum angle with respect to the wind direction c on the inflow side, that is, the axial direction c of the case body 1. When viewed from the axial direction c of the case body 1, there is a gap between each rear louver 6, as shown in FIG.
a ₁ and a ₂ are respectively generated. Therefore, these gaps
A problem has arisen in which the airflow traveling straight through _{a 1} and a ₂ collides with the deflected airflow, reducing the effect of changing the wind direction. By the way, as shown in FIG. 5, if the central rear louver 6 is lengthened rearward, the rear louver group 9
When rotated in the counterclockwise direction shown in the figure to incline to the maximum angle, a gap _a1 is created between the upper rear louver 6 and the center rear louver 6, but the center rear louver 6 and the lower rear louver 6 are A wrap _b2 is formed between the rear louver 6 and the rear louver 6. In this way, if the rear louver 6 is set sufficiently long rearward, the above-mentioned gap can be eliminated in some cases, but if the uppermost and lowermost rear louvers 6 are made too long, the case body 1 may This may cause interference and the problem of not being able to obtain a sufficient angle of inclination.
There is also a limit to how long the rear louver 6 can be. The present invention is intended to solve these problems, and aims to enhance the effect of changing the wind direction of the rear louver. [Structure of the invention] (Means for solving the problem) The present invention includes a plurality of front louvers 3 in the wind blowing opening 2, which are parallel to each other and can be rotated in conjunction with each other in the left and right directions. In this ventilator, a plurality of rear louvers 6 are provided in parallel to each other and can be rotated in conjunction with each other in the vertical direction, and the front louver 3 and the rear louver 6 are rotated to adjust the wind direction,
At least one of the plurality of rear louvers 6 is provided with protrusions 11, 12, 13 extending toward the adjacent rear louver 6 at its rear end. (Function) In particular, the present invention is characterized in that when a plurality of rear louvers 6 are tilted at the maximum angle with respect to the wind direction on the inflow side, a protrusion formed at the rear end of the rear louver 6 and extending toward the adjacent rear louver 6. The portions 11, 12, and 13 create a wrap _b1 between each rear louver 6 with respect to the wind direction on the inflow side, thereby reliably deflecting the entire air flow. (Example) An example of the ventilator of the present invention will be described with reference to FIG. Note that parts structurally corresponding to those of the conventional ventilator shown in FIG. 5 are denoted by the same reference numerals, and their explanations will be omitted. In the ventilator of this embodiment, a protruding portion 11 is provided at the rear end portions of the upper and lower rear louvers 6, which are orthogonal to these rear louvers 6 and extend toward the adjacent rear louver 6, that is, the central rear louver 6. are integrally formed. Then, as shown in the drawing, when the rear louver group 9 is rotated, for example, in the counterclockwise direction as shown in the drawing to incline to the maximum angle, the rear louver group 9 on the upper side in the drawing
A wrap _b1 is formed between the upper rear louver 6 and the rear louver 6 by the protrusion 11 formed on the upper rear louver 6 when viewed from the axial direction c of the case body 1.
On the other hand, a wrap _b2 is created between the center rear louver 6 and the rear louver 6 on the lower side in the figure because the center rear louver 6 is sufficiently long toward the rear. Therefore, all the airflow flowing parallel to the axial direction c of the case body 1 hits one of the rear louvers 6, and there is no straight airflow.
Wind direction can be changed efficiently. Note that when the rear louver group 9 is tilted clockwise at the maximum angle, the protrusion 11 of the lower rear louver 6 causes the lower rear louver 6 to
A wrap occurs between the center rear louver 6 and the rear louver 6. Here, the conventional ventilator V shown in FIG.
and experimental data comparing the effect of changing the wind direction of the ventilator I of the present example shown in FIG. 1. For both ventilators I and V, the lengths _{1 and 2} from the shaft 7 of the rear louver 6 to the front end are 6 mm, the length ₃ from the shaft 7 of the central rear louver 6 to the rear end is 20 mm, and the upper and The length ₄ from the shaft part 7 of the lower rear louver 6 to the rear end is 13 mm.
And so. In addition, in the ventilator I of this embodiment, the length of the protrusion 11 of the rear louver 6 _{is 5}
was set to 5 mm, and thickness ₆ was set to 1 mm. The results shown in the following table were obtained. In the table, the louver column shows the inclination angle α of the rear louver 6 with respect to the axial direction c of the case body 1, that is, the wind direction c on the inflow side, and the wind direction column shows the direction of the blown wind with respect to the wind direction c on the inflow side. Indicates the angle β. Further, the difference column shows the value of β-α, and the R column shows the rate of change in wind direction, that is, the value of 100β/α. Furthermore, the d direction and e direction indicate deflection or inclination in the d direction and e direction shown in the drawings.

[Table] As described above, by providing the protrusion 11 on the rear louver 6, the wind direction change rate R is 44.4 in the d direction.
% to 68.9%, and from 45.5% to 70.0% in the e direction (approximately 1.5 times). Next, another embodiment of the present invention will be described with reference to FIG. In this embodiment, the protrusions 12 provided at the rear ends of the upper and lower rear louvers 6 are formed to have a substantially triangular cross section. In this way, by making the protruding part 12 approximately triangular in cross section, the vortex generated in front of the protruding part 11 in the previous embodiment can be eliminated, and the loss of air flow energy is reduced. Ru. Next, still another embodiment of the present invention will be described with reference to FIG. In this embodiment, the protrusion 13 is provided obliquely with respect to the upper and lower rear louvers 6, and the rear louvers 6 are connected to the inflow side wind direction c.
When the projecting portion 13 is tilted at the maximum angle, the outer surface of the protruding portion 13 comes into surface contact with the inner surface of the blowing opening 2 of the case body 1. According to this structure, since there is no air flow that goes straight along the inner surface of the case body 1, the wind direction can be changed more efficiently. Furthermore, in each of the above embodiments, the protrusions 11, 1
2 and 13 may be formed in the shape of protrusions at the rear end of the rear louver 6, so that the rear louver 6 can be easily formed. In each of the above embodiments, the upper and lower rear louvers 6 are provided with protrusions 11, 12, 13, but the rear louvers 6 are often used with the rear louvers 6 tilted in one direction. In some cases, the protrusions 11, 12, 13 may be provided only on one of the upper and lower rear louvers 6. (Effect of the invention) According to the invention, a protrusion extending toward the adjacent rear louver is provided at the rear end of at least one of the plurality of rear louvers. without lengthening backwards, i.e. without reducing its maximum inclination angle,
A wrap can be created between each rear louver with respect to the wind direction on the inflow side, so that all the airflow hits the rear louver and there is no straight airflow, so the wind direction can be changed efficiently.

[Brief explanation of drawings]

FIG. 1 is a cross-sectional view showing one embodiment of the ventilator of the present invention, FIG. 2 is a cross-sectional view showing another embodiment of the present invention, and FIG. 3 is a cross-sectional view showing yet another embodiment of the present invention. FIGS. 4 and 5 are cross-sectional views showing an example of a conventional ventilator, respectively. 2...Blowout opening, 3...Front louver, 6
... Rear louver, 11, 12, 13 ... Projection.

Claims (1)

[Claims for Utility Model Registration] (1) A plurality of front louvers are provided in the wind blowing opening so as to be rotatable in parallel with each other in the left and right directions, and also in parallel with each other and in the up and down directions. In a ventilator in which a plurality of rear louvers are provided so as to be rotatable in conjunction with each other, and the front louver and the rear louver are rotated to adjust the wind direction, at least one of the plurality of rear louvers is provided.
A ventilator characterized in that a protrusion extending toward an adjacent rear louver is provided at the rear end of each rear louver. (2) When the plurality of rear louvers are tilted at the maximum angle with respect to the wind direction on the inflow side, the protrusion of the outermost rear louver comes into contact with the inner surface of the blowout opening. A ventilator according to claim 1 of the utility model registration claim.