JPH0570059B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an air conditioner for an automobile, and particularly to the structure of an air outlet for blowing air into the interior of an automobile.

Prior Art In order to adjust the volume and direction of air blown out from an air outlet for an automobile, a large number of plate-shaped blades are installed inside a duct that forms the air outlet.
These blades are arranged at predetermined intervals so that they can rotate about axes that are parallel to each other, and are connected by connecting rods that are pivoted away from the axis of rotation, allowing the blades to rotate simultaneously while remaining substantially parallel to each other. Air outlet structures that allow rotation about an axis to change the direction of the air or close the air outlet are well known.

In this type of air outlet, the blades must be easily rotated and their orientation changed by the operator operating the connecting rod or any one blade or an operating handle provided on any blade. On the other hand, the blade must not move freely due to the force of the air blown out or the vibration of the car when not in operation. For this reason,
Conventionally, for example, in the support part of the blade,
By tightening the fit between the shaft on the blade side and the hole on the duct body side into which the shaft is inserted, or by reducing the axial distance between the rotary shaft flange of the blade and the inner wall of the duct body in contact with it. This gave the blade an initial operating load. However, the duct body and blades are usually manufactured by resin molding, but according to this method,
It is difficult to control the dimensions of the blade support part, which varies widely, and is also greatly affected by deformation due to heat. Therefore, it is necessary to apply the desired initial operating load to the blade and maintain this load constant over a long period of time. It is difficult.

Problems to be Solved by the Invention The present invention makes it possible to apply a desired initial operating load to the blade without strict dimensional control of each component, and to prevent the initial operating load of the blade from being affected by thermal deformation. The present invention provides a structure of an air outlet that does not receive air.

Means for Solving the Problems According to the present invention, in the structure of an air outlet for an automobile in which a plate-shaped blade is rotatably arranged inside the air outlet so that the direction of air blowing can be changed, The plate-shaped blade is divided along the rotation axis direction into a large main body and a small elastically deformable part by a notch in a direction substantially perpendicular to the rotation axis, and the plate-shaped blade is separated from the rotation center axis. The easily elastically deformable portion is extended forward of the front line of the main body in a direction away from the rotational center axis, and the extended portion is moved from the front side to the back side of the fixed surface substantially orthogonal to the rotational center axis. The U-shaped extension portion 3 is made to straddle the U-shaped extension portion so that the tip of the U-shaped extension portion is always in frictional contact with the back surface side.
There is provided a structure of an air outlet for an automobile in which the rotating range of the plate-shaped blade is restricted by the portions 3b coming into contact with both side edges of the fixed surface.

Embodiment Referring to FIGS. 1 to 4, the premise of the present invention and the structure of the air outlet will be explained. The air outlet body forming the air outlet 1 having a substantially rectangular cross-sectional shape, for example the register 2, has an upper wall 21 and a lower wall 22.
Attachment holes 2a for rotatably attaching a large number of plate-shaped blades 3 are provided vertically facing each other and at equal intervals in the lateral direction (the lower attachment holes are not shown). Each blade 3 has shaft portions 3a, 3b (Fig. 3) that protrude vertically on the same axis at the center of its upper and lower ends, and flanges 4a, 4b are provided on the blade body sides of these shaft portions 3a, 3b. (Fig. 3) is formed. Further, at the front end of each blade 3, a shaft portion 5 for pivotally attaching the connecting rod 7 is attached to a stay 6.
is formed. The axis of the shaft portion 5 is the same as that of the shaft portion 3.
a, 3b (FIG. 3) are apart from and parallel to the axes. Such shaft portions 3a, 3b, flange portion 4
The blade 3 including the blades a, 4b (FIG. 3), the shaft portion 5, and the stay 6 can be integrally molded from resin or the like. Holes 8 (FIG. 2) for inserting into the shaft portion 5 of the blade 3 are formed in the connecting rod 7 at equal intervals in the longitudinal direction.

In FIGS. 1 to 4, any one of the plurality of blades 3, for example, the central plate-shaped blade 30
Shape as shown in the figure. That is, a notch 31 is formed near the lower end of the blade 30 in a direction substantially orthogonal to the rotational axes 3a, 3b of the blade 30, extending from the front of the blade 30 to the vicinity of the rotational axis, as shown in FIG. This notch 11 divides the blade 30 into a large body portion 32 and a small arm 33 at the lower end. Then, the arm 33 is extended forward, and a downwardly projecting contact portion 33a is formed at the front end thereof. On the other hand, the lower wall 22 of the register 2
The central part of the blade 30 is made to protrude forward in an arc shape while remaining flush with the lower wall 22, so that the operation surface 22a is always in frictional contact with the contact portion 33a of the arm 33, no matter what rotational position the blade 30 is in. Form.

When assembling the air outlet shown in FIG. 1, first prepare the connecting rod 7 as shown in FIG. 2, and as shown in FIG. The blades 3 and 30 are connected by sequentially inserting them into the holes 8 (FIG. 2). blade 3,
The shaft diameter of the tip of the shaft portion 5 of No. 30 is slightly larger than the diameter of the hole 8 of the connecting rod 7, and after the shaft portion 5 is forcibly inserted into the hole, the shaft portion 5 can be easily removed from the hole 8. In addition, the blades 3 and 30 are designed to be able to pivot freely around the shaft portion 5.
Next, as shown in FIG. 4, the shaft portions 3a, 3b of the blades 3, 30 are fitted into the mounting holes 2a, 2b in the upper and lower inner walls of the duct body 2, thereby forming an air outlet assembly. In this case, the arm 33 of the central blade 30 is elastically deformed upward toward the notch 31 to forcibly bring the tip contact portion 33a of the arm 33 into contact with the operating surface 22a of the lower wall 22 of the duct body 2. do. For this reason, the central blade 30 is integrally molded with a suitable resin material, etc., and the arm 3
A notch 31 is provided at an appropriate position so that 3 can be easily elastically deformed.

When adjusting the air volume and direction by changing the angle of the blades 3, 30, the multiple blades 3, 30 can be adjusted by operating the arm 33 of the central blade 30.
30 are simultaneously rotated around the rotation axis while maintaining substantially parallel to each other, but since there is constant frictional contact between the front end contact portion 33a of the arm 33 and the operation surface 22a, when operating the arm 33. An appropriate initial operating load is obtained, and the blades 3, 30 are held at a constant angular position when not in operation. Of course, the initial operating load can be appropriately selected depending on the size and shape of the notch 31 and the arm 33.

FIG. 5 shows only the central blade of the embodiment of the present invention, and the pivot portion of the connecting rod 7 (FIG. 1) is not shown. In this embodiment, the operating surface 22a of the lower wall 22 of the duct body is connected to the blade 3.
It is formed into an arc shape centered on the rotational axes 3a and 3b of 0, and the front extension part 33b of the arm 33 of the blade 30 is shaped to straddle the operating surface 22a from the upper surface to the lower surface in a U-shape. This U-shaped extension 33
Contact portion 33c protruding upward from the lower part of b
The contact portion 33c is brought into frictional contact with the lower surface of the operation surface 22a. For this purpose, the vertical interval of the U-shape of the U-shaped extension 33b is set to be small in the free state before assembly, and after assembly, the operation surface 22a
generates a force to pinch the material and obtains the necessary initial operating load. Furthermore, in this embodiment, the arm 33 comes into contact with the edges 22b, 22c of the operation surface 22a, thereby producing the effect of limiting the angular range of the blades 3, 30.

Effects of the Invention As described above, according to the present invention, the arm 33, which is a part that is easily elastically deformed, is formed in a part of the plate-shaped blade 30, and is brought into frictional contact with the operation surface 22a, which is a fixed surface. Therefore, an appropriate desired initial operating load value can be set without strict dimensional control of each component, and the value is not easily affected by thermal changes, aging, etc. of each component.

Furthermore, in the present invention, the extension part (arm) 33 is projected forward from the main body 32 and straddles the operating surface 22a from the front side to the back side in a substantially U-shape, and its tip is brought into frictional contact with the back side. Not only can this extension be used as an operating arm, but it can also function as a stopper to restrict the range of rotation of the blade, and it can also give elastic deformation to the material of the blade without difficulty. The range of material selection will also expand.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a comparative example, which is the premise of the automotive air outlet assembly of the present invention, and FIGS.
The figure shows an assembly procedure, and FIG. 5 shows a part of an embodiment of the present invention. 1... Air outlet, 2... Air outlet body (register), 3, 30... Blade, 22a... Operation surface (fixed surface), 31... Notch, 32... Blade body, 33... Arm .

Claims (1)

[Claims] 1 Plate blades 3, 30 inside the air outlet 1
In the structure of the air outlet for an automobile, in which the air outlet for an automobile is rotatably arranged to change the blowing direction of air, the plate-shaped blade 30 has a notch 31 in a direction substantially orthogonal to the axis of rotation. It is divided along the axial direction into a large main body 32 and a small elastically deformable portion 33, and the elastically deformable portion 33, which is away from the rotation center axis of the plate-shaped blade, is moved in a direction away from the rotation center axis. Extending forward from the front edge of the main body 32, the extension portion 33b
, a fixed surface 22a substantially orthogonal to the rotation center axis
from the front side to the back side in a substantially U-shape so that the tip 33c of the U-shaped extension part is always in frictional contact with the back side, and the U-shaped extension part 33b
The structure of the air outlet for an automobile is such that the rotating range of the plate-shaped blade is restricted by contacting both side edges 22b and 22c of the fixed surface 22a.