JPS6220695A - Fan - Google Patents

Abstract

PURPOSE:To minimize an installation space, by providing a change blade for changing an air blasting direction with a front guard covering a fan and providing drive means for rotating the front guard. CONSTITUTION:There are provided a rear guard 4 and a front guard 3 for covering blades 3. THe rear guard 4 is provided with a motor 7. The front guard 5, which is provided with a change blade 6 for changing an air blasting direction, is rotated by the small motor 7. This arrangement permits the change blade 6 to rotate so that wind is widely changed upward, downward, and to the right and left. As a result, an additional space is not required because only the front guard 5 rotates.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a household electric fan.

BACKGROUND ART Conventional electric fans mainly have two types of configurations as shown in FIGS. 3 and 4. In FIG. 3, 101 is a fan motor having a motor rotation shaft 102, 1o3 is a blower blade attached to the motor rotation shaft 102, 104 is a front guard that covers the blade 103, and 105 is a rear guard that covers the blade 103. It shows. The motor 101 is connected to the stand 106
The motor was rotatably attached via a motor support shaft 108 to a connector 107 connected to the motor. In such an electric fan, in order to change the air blowing direction, a speed reduction mechanism (not shown) linked to the rotary shaft 102 is provided at the rear part of the motor 101, and the motor 1o1° blade 1Q3 . front guard 104. The rear guard 105 was moved horizontally from side to side.

In FIG. 4, 11 is a motor 77 that rotates the fan blade 12, 13 is a louver with changing blades 14 that changes the direction of the wind, 16 is a small motor that rotates the louver 13, and 1e is the fan motor 11. and the small motor 1
A box-shaped outer frame having support pillars 17 supporting the air blower 5, and a guard 18 covering the air blowing blades 12 are shown.

In such an electric fan, in order to change the air blowing direction, the louver 13 having the changing blades 14 is connected to the small motor 16.
It was being rotated.

Problems to be Solved by the Invention In such a conventional configuration, in the case of FIG. 3, in order to change the direction of air blowing, the blades 103 . Front guard 1o4. Since both the rear guard 105 and the rear guard 105 move horizontally, a very large volume moves, and a large installation space is required to use the electric fan. In addition, in the case of FIG. 4, since the air blowing direction was changed through the louver 13 having changing blades 14 having a smaller diameter than the box-shaped outer frame 16, the outer frame 16 restricted the change range of the air blowing direction. There was a problem with that.

The present invention solves these problems, and aims to provide an electric fan that can blow air over a wide area even when installed in a narrow space.

Means for Solving the Problem In order to solve this problem, the present invention includes a support column that supports the blower, a rear guard that covers the blower, and a front guard, and the front guard has a support column that supports the blower, and the front guard has an air blowing direction. The front guard is further provided with a changing blade for changing the front guard, and a driving means for rotating the front guard.

Function: With this configuration, the front guard with changing wings can be easily rotated, and the wind direction can be changed over a wide space.

Embodiment An embodiment of the present invention will be explained based on FIGS. 1 and 2. In the figure, 2 is the rotating shaft of the blowing motor 1, 3 is a blade attached to the blowing motor rotating shaft 2, 4 is a rear guard that covers the blade, and 6 is a changing blade 6 for changing the blowing direction. A front guard that covers the blades 3, and a small support 7 for rotating the front guard are attached to the rear guard 4 and support the head of the electric fan.

According to the above configuration, when the front guard 6 is rotated by the small motor 7, the changing blades 6 provided on the front guard 6 are rotated, and the wind is changed over a wide range of left, right, top and bottom.

Here, by rotating the front guard 6, in the conventional electric fan shown in FIG. Compared to the installation space required, the front guard 6
No extra space is required because only the chisel rotates. In addition, compared to the conventional electric fan, which occupies a large volume and is very noisy when moving in space, the present invention eliminates such a noisy feeling and can be used comfortably.

Furthermore, in the conventional electric fan shown in Figure 4, there was a box-shaped outer frame on the outside of the louver, and the outer frame regulated the changing direction of the airflow, so the effect of the changing blades was not sufficient. By eliminating the box-shaped outer frame, the effect of the modified wing 6 can be fully demonstrated,
Wind can be changed over a wide range. In addition, by eliminating the box-shaped outer frame, the size of the fan can be minimized, making it even more compact than conventional box-shaped fans, reducing the space in which the fan is installed, and creating less wind resistance. You can reduce the air blowing noise.

Effects of the Invention As is clear from the description of the embodiments above, the present invention is capable of changing the wind direction by installing changing wings on the front guard and rotating the front guard, thereby minimizing the space for installing the fan. At the same time, by rotating the front guard, the range of air blow changes can be increased, which has a very large effect.

[Brief explanation of drawings]

Fig. 1 is a sectional view of essential parts of an electric fan according to an embodiment of the present invention, Fig. 2 is a side view of the same electric fan, Fig. 3 is a side view of a conventional electric fan, and Fig. 4 is a cross section of another conventional electric fan. Show the diagram. 1...Blower, 2...Blower motor rotation shaft, 3...Blade, 4...Rear guard,
5...Front guard, 6...Change wing, 7.
...Small motor, 8...Support column, 9...
...Support stand. Name of agent: Patent attorney Toshio Nakao and 1 other person 4-
γ亥が-r S-S θ G”-1 * ガ 7 --- A, da wo ta 8 -- Ichishi Tokusha Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] It has a support column that supports a blower, a rear guard that covers the blades of the blower, and a front guard, the front guard is provided with a changing blade that changes the direction of air blowing, and a drive means that rotates the front guard. electric fan.