JPS6229677Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a blower in which the direction of air blowing is changed by rotating the casing of a cross-flow fan, and particularly relates to improvements in the support structure of the fan casing and the fan drive motor.

As shown in FIG. 1, this type of blower conventionally includes a casing 2 of a cross-flow fan 1 rotatably supported within a main body casing 3.
A drive motor 4 is provided in the fan casing 2 in parallel with the fan 1, and the motor 4 is supported by the fan casing 2.

However, in such a structure in which the weight of the motor 4 must be supported by the fan casing 2, the fan casing 2 itself must be made of a steel plate or the like to have sufficient strength.
Their production requires the laborious work of press-forming and welding many parts and assembling them, which not only increases costs, but also makes it difficult to maintain a certain level of parts accuracy. Ta.
In addition, as a result of constructing the fan casing 2 from a steel plate or the like, the fan casing rotating drum 7 to which rotational force is applied by a drawstring, the drum 6 to which a display board for air blowing direction etc. is attached, and the fan casing 2 can be moved to each rotating position. The cam part (not shown) that holds the motor 4, the switch input cam part (not shown) that works with the operating switch of the motor 4, etc. cannot be integrally molded with the fan casing 2, so it is difficult to manufacture these parts.・There was a drawback that assembly was troublesome.

Therefore, in view of the above-mentioned conventional circumstances, the present invention eliminates the motor support by the fan casing, fixes and supports the motor directly on the inner wall of the main body casing, and attaches a fan casing rotating drum and various parts to the fan casing. The present invention provides an air blower that eliminates the above-mentioned conventional drawbacks by integrally molding the air blower.

An embodiment of the present invention will be described below with reference to FIGS. 2 and 3.

In these figures, 13 is a crossflow fan, 14
is a casing of the fan 13, 15 is a rotating shaft fixed to one end of the casing 14, and 20 is provided to the other end of the casing 14. A cam portion 17 for holding the casing 14 at each rotational position is a drum for rotating the casing 14, and a drawstring 16 is attached thereto as a means for rotating the casing 14. 1
Reference numeral 8 denotes a drum section for pasting a display board such as the direction of air flow, and 19 a cam section for inputting a switch in conjunction with an operating switch 24 of a fan drive motor, which will be described later.
It is integrally molded on the outer peripheral edge of the.

The cam portion 20 and the drum portion 18 are integrally formed with the drum 17, and the drum 17 itself is integrally formed with the fan casing 14.

10 is a fan drive motor, 11 is a mounting plate thereof, and 21 is an elastic plate 22 that engages with the cam portion 13.
This support plate has 23 U-shaped notches. Reference numeral 12 denotes a blower main body casing, which has a groove 25 for supporting the rotating shaft 15 and a U-shaped notch 26 for supporting the fan casing 14 that matches the notch 18 of the support plate 21.

Then, set the crossflow fan 13 in the fan casing 14, insert the fan casing 14 into the one-sided space A in the main casing 12, insert the support plate 21 into the cam part 20 of the casing 14, and insert the support plate 21 into the cam part 20 of the casing 14. The notch 23 and the matching notch 26 on the main body casing 12 side rotatably support the end of the fan casing 14 on the side where the drum 17 is formed, and the shaft holding plate 27 supports the rotating shaft 15. If the casing 14 is placed in the groove 25 and supported freely for rotation, the casing 14 is attached to the main casing 1.
It can be freely rotated and supported in the one-sided space A in 2. Next, the motor 10 is connected to the main body casing 12
It is inserted into the space B inside and fixedly supported via the mounting plate 11.

According to this configuration, the motor is not supported by the fan casing as in the conventional case, but is fixedly supported directly within the main body casing 12 via the support plate 11, so that the fan casing 14 is equipped with the motor and the fan. Therefore, in terms of strength, the fan casing 14 can be molded from a material with reduced strength, such as synthetic resin, instead of being made from a steel plate as in the past. In addition, the fan casing 14 made of synthetic resin can be integrally molded with the fan casing rotation drum 17 and other parts, and the drum 17 and other parts can be prepared separately as in the past. This eliminates the need for work such as assembly, making it possible to keep manufacturing costs low.

As explained above, according to the present invention, the supporting structure of the fan casing and the fan drive motor is simply improved, and the fan casing is integrally molded with the drum for rotating the fan casing and other parts. This has the practical effect of reducing the number of fan casings, improving the manufacturability of the fan casing, and reducing manufacturing costs.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view of a fan casing portion showing a conventional blower structure, Fig. 2 is a perspective view showing a blower structure according to the present invention, and Fig. 3 is a longitudinal cross-sectional view showing the structure of a fan casing portion of the same blower. It is a diagram. 10...Motor, 12...Body casing, 1
3...Crossflow fan, 14...Fan casing,
17...Drum for fan casing rotation.

Claims (1)

[Scope of utility model registration request] In the blower, the fan casing is rotatably supported in a space on one side of the main body casing, and the fan casing is rotatably supported by rotating the casing of the cross-flow fan provided in the main body casing. While the drive motor is fixedly supported in the other side space within the main body casing, a fan casing rotation drum provided with a rotation means is integrally molded at the end of the fan casing on the side of the motor support position, and the drum is , a drum part to which a display board for air blowing direction etc. is attached, a cam part to hold the fan casing at each rotating position, and a switch input cam part to be linked to the operating switch of the fan drive motor are integrally molded. A blower characterized by having the following configuration.