JPH074428Y2 - Air blower - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to an air blowing device such as a ventilator of an automobile.

(Prior Art) A conventional air blowing device is shown in FIG. 8, in which a plurality of louvers 3 that rotate integrally in a parallel state with a support shaft 2 as a fulcrum are provided inside a grill 1 that opens in the front and rear. The louvers 3 are worn, and the direction of the wind blown in front of the grill 1 can be adjusted by rotating the plurality of louvers 3.

However, as shown in FIG. 8, when the louver 3 is most inclined, the front end of the louver 3a on the left side of the drawing comes into contact with or comes close to the side wall of the grill 1, so that the rear end of the louver 3a and the grill 1a. The air stagnates with the side wall of the grill 1 to form an ineffective range a which does not contribute to the blowout from the grill 1, and the effective range b in which the air blows from the grill 1 becomes narrow.

Therefore, as shown in FIG. 9, the length of the rear end of the louver 3 is shortened, and the ineffective range a of the louver 3a on the left side in the drawing is narrowed in the state where the louver 3 is most inclined.

However, a gap is created between the rear end of the louver 3c on the right side of the drawing and the side wall of the grill 1, and an invalid range c in which the direction of the wind cannot be adjusted by the louver 3 is created, and the air blown out from the grill 1 is totally effective. The range b becomes narrow.

Further, for example, there is an air blowing device disclosed in Japanese Utility Model Laid-Open No. 54-27447. This will be described with reference to FIG.
At least the rear end of the louver 3a on the left side of the drawing is shortened and at least the rear end of the louver 3c on the right side of the drawing is lengthened to eliminate the invalid range c and widen the effective range b.

However, this is effective only when the louver 3 is tilted to the left side, and the effective range becomes narrower when the louver 3 is tilted to the right side. Therefore, in the case of an automobile, it should be applied to a side ventilator. However, it cannot be applied to a center ventilator that needs to be tilted in the left-right direction.

(Problems to be Solved by the Invention) As described above, in the conventional air blowing device, the effective range of air blowing cannot be widened in both side directions in which the louver adjusts the wind direction, and the air blowing efficiency is poor.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an air blowing device capable of improving the air blowing efficiency by widening the effective range of air blowing in both side directions in which the louver adjusts the wind direction. It is what

[Constitution of device]

(Means for Solving the Problem) According to the present invention, a plurality of louvers 31a, 31b, and
The louvers 31a and 31c are attached to the rear end portions of the louvers 31a and 31c on both sides facing the side walls 14 and 15 of the grill 11 with the length of the rear end portions of the louvers 31a and 31c. An auxiliary louver 41 for expanding and contracting is provided so as to be slidable back and forth in parallel with the louvers 31a and 31c, and when the auxiliary louver 41 approaches the side walls 14 and 15 of the grill 11 as the louvers 31a and 31c rotate. Auxiliary louver 4 while extending from the rear end of 31a, 31b
When the 1 is separated from the side walls 14 and 15 of the grill 11, the louver 31a,
A guide portion 20 for interlocking the auxiliary louver 41 so as to contract is provided at the rear end of 31c.

(Operation) In the present invention, the front ends of the louvers 31a and 31c are the side walls 1 of the grill 11.
When the auxiliary louver 41 separates from the side walls 14, 15 of the grill 11 by tilting so as to be close to 4, 15, the auxiliary louver 41 contracts to the rear ends of the louvers 31a, 31c and does not participate in air blowing. When the auxiliary louver 41 comes close to the side walls 14 and 15 of the grill 11 by tilting the front end of the louvers 31a and 31c away from the side walls 14 and 15 of the grill 11, the range is narrowed. 41 extends from the rear end of the louver 31a, 31b and extends to the side wall 14,
15 and widens the effective range of air blowing, and therefore, even if the louvers 31a, 31b, 31c are tilted and rotated in either direction of the side walls 14, 15 of the grill 11, the effective range of air blowing is totally. Spreads.

(Embodiment) The construction of an embodiment of the present invention will be described below with reference to FIGS.

In the figure, reference numeral 11 denotes a grill, which is formed in a horizontally long rectangular frame shape that is opened forward and backward by the upper and lower walls 12 and 13 and the left and right side walls 14 and 15, and the rear surface serves as an air inlet side and the front surface serves as an air outlet side. There is.

A plurality of horizontal fins 16 are integrally formed on the inside of the front surface of the grill 11, and a holding frame 18 into which an operation knob 17 is laterally slidably fitted is formed at the center of one horizontal fin 16.

On the upper wall 12 and the lower wall 13 of the grill 11, a plurality of bearing holes 19 for rotatably pivotally mounting louvers 31a, 31b, 31c, which will be described later, are formed in a vertically corresponding manner, and an auxiliary louver, which will be described later. 2 for interlocking with the rotation of the louvers 31a, 31b, 31c
0s are formed corresponding to the top and bottom. The guide portion 20 has a guide groove 21 in which end portions near the side walls 14 and 15 are formed on the rear side of the grill and end portions on the center side separated from the side walls 14 and 15 are formed on the front side of the grill. It is composed of.

A support shaft 22 is projectingly provided on the outer surfaces of both side walls 14 and 15 of the grill 11.

Also, 31a, 31b, 31c are louvers, and a support shaft 32 protruding substantially in the central upper and lower parts is rotatably attached to the bearing hole 19 of the grill 11 and linked to a pin 33 protruding on the upper front end. 34 mating holes 35
Is rotatably fitted. Then, the engaging portion 17a of the operation knob 17 attached to the horizontal fin 16 is engaged with the front end portion of the central louver 31b, and by laterally sliding the operation knob 17, all the louvers 31a, 31b, 31c. Rotate integrally in a parallel state via the link 34.

At the front ends of these louvers 31a, 31b, 31c, horizontal fins 16
A plurality of notched grooves 36 are formed to prevent interference with the
The protrusions at the rear ends of the louvers 31a, 31c on both sides facing the side walls 14, 15 of the grill 11 are formed to be short and the louvers on the center side are
The protruding dimension of the rear end of 31b is formed long.

Further, 41 is an auxiliary louver mounted on the outer side of the rear ends of the louvers 31a, 31c on both sides, and a cylindrical frame 43 having a fitting groove 42 that is slidably fitted in the outer side of the rear ends of the louvers 31a, 31c is formed. , And the pins protruding from the upper and lower parts of the rear end of the cylinder frame 43.
44 are slidably fitted in the corresponding guide grooves 21 of the upper wall 12 and the lower wall 13 of the grill 11.

Reference numeral 51 denotes a case, which is formed in a rectangular frame shape that opens in the front and rear, and has support holes 52 provided on both sides thereof in both side walls 1 of the grill 11.
A pin 22 protruding from the outer surface of 4, 15 is rotatably attached to the shaft,
A duct 54 communicating with the blower is closely fitted to the stepped portion 53 at the peripheral edge of the rear end.

Then, first, as shown in FIG.
When a, 31b and 31c are parallel to the side walls 14 and 15 of the grill 11, wind is blown straight forward from the grill 11. Therefore, the entire area of the opening of the grill 11 is the effective range b of air blowing.
Becomes

Next, as shown in FIG. 3 (b), the louvers 31a, 31b, 31c
When tilted to the left, the wind is blown from the grill 11 toward the left.

At this time, the auxiliary louver 41 moves away from the side wall 14 of the grill 11 with the tilt rotation of the left louver 31a, and the pin 44 of the auxiliary louver 41 slides to the inner end side of the guide groove 21 of the grill 11. The auxiliary louver 41 and the louver 31
Since it slides forward so as to cover the rear end portion of a, the length of the rear end portion of the louver 31a contracts. Therefore, the air stagnates between the louver 31a and the side wall 14 of the grill 11 to generate an invalid range a that does not contribute to the blowout from the grill 11, but the length of the rear end portion of the louver 31a contracts to cause the invalid range a. It is possible to narrow a.

On the other hand, as the right louver 31c tilts and rotates, the auxiliary louver 4
1 moves closer to the side wall 15 of the grill 11 and the auxiliary louver 41
Since the pin 44 of the louver 31c slides to the outer end side of the guide groove 21 of the grill 11 and is brought rearward, and the auxiliary louver 41 slides rearward from the rear end portion of the louver 31c, the length of the rear end portion of the louver 31c is reduced. Grows. Therefore, even if the length of the rear end of the louver 31c is short, the auxiliary louver 41 expands,
The auxiliary louver 41 comes into contact with the side wall 15 of the grill 11 to widen the effective range b of air blowing.

Therefore, since the ineffective range a is narrowed by the auxiliary louver 41 of the left louver 31a and the effective range b is widened by the auxiliary louver 41 of the right louver 31c, the effective range b of air blowing can be widened in total. .

Next, as shown in FIG. 3 (c), the louvers 31a, 31b, 31c
When the is tilted to the right, the wind is blown from the grill 11 to the right.

At this time, the auxiliary louver 41 moves away from the side wall 15 of the grill 11 along with the tilt rotation of the right louver 31c, and the pin 44 of the auxiliary louver 41 slides to the inner end side of the guide groove 21 of the grill 11. The auxiliary louver 41 and the louver 31
Since it slides forward so as to cover the rear end of c, the length of the rear end of the louver 31c contracts. Therefore, although the air is stagnant between the louver 31c and the side wall 15 of the grill 11, an invalid range a that does not contribute to the blowout from the grill 11 is generated.
By contracting the length of the rear end portion of the louver 31c, the invalid range a can be narrowed.

On the other hand, the auxiliary louver 4 is moved along with the tilt rotation of the left louver 31a.
1 moves closer to the side wall 14 of the grill 11 and the auxiliary louver 41
Since the pin 44 of the louver 31 slides to the outer end side of the guide groove 21 of the grill 11 and is brought rearward, and the auxiliary louver 41 slides rearward from the rear end portion of the louver 31a, the length of the rear end portion of the louver 31a is reduced. Grows. Therefore, even if the length of the rear end of the louver 31a is short, the auxiliary louver 41 expands,
The auxiliary louver 41 comes into contact with the side wall 14 of the grill 11 to widen the effective range b of air blowing.

Therefore, since the ineffective range a is narrowed by the auxiliary louver 41 of the right louver 31c and the effective range b is widened by the auxiliary louver 41 of the right louver 31a, the effective range b of air blowing can be widened in total. .

As described above, even when the louvers 31a, 31b, 31c are tilted and rotated in either the left or right direction, the effective range b of the air blowing is b.
Can be widened and the air blowing efficiency can be improved.

As shown in FIGS. 4 and 5, the louvers 31a, 31
A trapezoidal convex guide protrusion 61 is integrally formed on the side surface of c, and a trapezoidal concave slide groove 62 is formed on the side surface of the auxiliary louver 41 so that the guide protrusion 61 is slidably fitted back and forth. Due to the slide structure of the part 61 and the slide groove 62,
The length of the rear end portion of the louvers 31a and 31c may be adjusted by the auxiliary louver 41 to expand and contract.

Further, as shown in FIG. 6, a stopper 63 is provided on the side surface of the rear end portion of the louvers 31a and 31c so as to project, and a cutout portion 64 is formed on the side surface of the cylinder frame 43 having the fitting groove 42 of the auxiliary louver 41. Thus, the auxiliary louver 41 is retained and retained while the cylinder frame 43 of the auxiliary louver 41 is fitted to the outside of the rear end of the louver 31a, 31c, and the workability when assembling the louver 31a, 31c to the grill 11 is improved. Can be good.

Further, as shown in FIG. 7, the guide portion 20 is configured by providing a guide groove 66 between a pair of parallel ridges 65 protruding from the lower surface of the upper wall 12 and the upper surface of the lower wall 13 of the grill 11. You may.

[Effect of device]

According to the present invention, when the auxiliary louvers are provided at the rear ends of the louvers on both sides so as to be extendable and contractible, and the auxiliary louvers are separated from the side walls of the grill by tilting and turning so that the front ends of the louvers come close to the side walls of the grill. , The auxiliary louver contracts to the rear end of the louver and moves closer to the side wall, narrowing the ineffective range that does not contribute to air blowing, while the front end of the louver tilts and turns so as to separate from the side wall of the grill. When the louver approaches the side wall of the grill 11, the auxiliary louver extends from the rear end of the louver and approaches the side wall, and the louver is tilted in either direction on both side walls of the grill in order to increase the effective range of air blowing. Even in such a case, the effective range of air blowing can be expanded and the air blowing efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the air blowing device of the present invention, FIG. 2 is a perspective view of its exploded state, and FIG. 3 (a).
(B) and (c) are sectional views for explaining the operation, FIG. 4 is a perspective view showing another embodiment of the present invention, FIG. 5 is its sectional view, and FIG.
FIG. 7 is a perspective view showing still another embodiment of the present invention, FIG. 7 is a perspective view showing still another embodiment of the present invention, and FIGS. 8 and 9 are sectional views of a conventional air blowing device. . 11 …… Grill, 14, 15 …… Side wall, 20 …… Guide part, 31a, 3
1b, 31c ... louvers, 41 ... auxiliary louvers.

Claims (1)

[Scope of utility model registration request] 1. A grill having a rear surface as an air inflow side and a front surface as an air outflow side, a plurality of louvers axially rotatably pivoted in parallel with the inside of the grill, and a side wall of the grill. An auxiliary louver is provided at the rear ends of the facing louvers so as to be slidable forward and backward in parallel with the louver, and the auxiliary louver adjusts the length of the rear end of the louver. When extending from the rear end of the louver when approaching,
An air blowing device comprising: a guide portion that interlocks the auxiliary louver so that the auxiliary louver contracts to the rear end of the louver when the auxiliary louver separates from the side wall of the grill.