JPS60230595A - Crossflow fan - Google Patents

Abstract

PURPOSE:To perform assembling and repairs so efficiently, by installing a shaft insertable slit, a bearing setting metal device and a tapped hole in one side of side plates in a crossflow fan. CONSTITUTION:A slit 11 being opened on one side where an impeller shaft 52 passes through is installed in a bearing side plate 10, while a small hole 12, where a positioning claw part 19 of a bearing setting metal device 13 is inserted thereinto, is installed in the lower part of a terminal end of the slit 11. And, a stepped part 16 and each of tapped holes 22 and 23 being opposed to a projection part 21 to be fitted in each of tapped holes 14 and 15 are installed in a flat part 20. With this constitution, assembling and repairs are efficiently performable in leaving a motor installed intact.

Description

[Detailed description of the invention] ? FIELD OF THE INVENTION The present invention relates to a cross-flow fan having an impeller supported by a motor at one end and a bearing at the other end.

Conventional configuration and its problems Conventionally, this type of cross-flow fan has been configured as shown in FIG. That is, an impeller 5 is installed in a casing composed of a rear guider 1, a tongue portion 2, and side plates 3 and 4.
In the cross-flow fan housing the impeller 5, a boss 51 is provided at one end of the impeller 5, and a shaft 52 is provided at the other end. It was supposed to rotate. In the cross flow fan having the above configuration, the impeller is housed in the following procedure.

That is, first, the impeller is placed in the casing space at an angle, and the shaft 52 is inserted into the hole 31 provided in the side plate.

Next, after fitting the shaft 52 and the bearing 71, this bearing unit 7 is attached to the side plate 3 from the outside of the casing, and finally, the motor shaft 61 is inserted into the impeller post 51, and the motor 6 is attached to the side plate 4. It was attached.

However, with this configuration, assembly was complicated and took a lot of time, and workability was extremely poor.Furthermore, when removing the impeller from the casing for repairs, etc., it was necessary to remove the motor and bearing from the side plate. . In particular, since the bearing unit is attached from the outside of the casing with screws 72, when it is assembled into the device 8 as shown in Figure 2, there is little space 9 for using tools such as a screwdriver, and the device body must be disassembled into small pieces. The workability of repair work was also very poor.

Also, if you frequently attach and detach the motor and bearing unit,
The motor and bearing unit are not properly attached to the side plate.
This has caused inconveniences such as inducing vibrations.

OBJECTS OF THE INVENTION The present invention eliminates the drawbacks of the conventional technology and makes assembly and repair work of the Kuromeflow fan efficient, and also allows the impeller to rotate in a well-balanced manner by mounting the bearing unit in an accurate position. The purpose is to

Structure of the Invention In order to achieve this object, the present invention provides a casing consisting of a tongue, a rear guider, and both side plates, and an impeller rotatably disposed within the casing. a slit with an open end into which the shaft of the impeller can be inserted; a bearing mounting fitting for receiving the shaft is provided on the outside of the one side plate; A screw hole into which a screw can be screwed together is provided in the side plate of the above-mentioned side and the bearing mounting metal fitting.

With this configuration, the cross flow fan assembly work is as follows. That is, while inserting the impeller boss into the motor shaft of the motor attached to one side plate, insert the impeller shaft into the slit of the other side plate, and then insert the bearing mounting bracket as described above while fitting the bearing to the impeller shaft. While being pressed against the other side plate, it is fixed to the other side plate using screws from inside the casing.

Through such work, assembly and repair work can be performed efficiently with the motor attached, and the impeller can always be rotated with good parannuation without shifting the bearing mounting position even if repair work is performed frequently.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 3 and 4. In the figure, parts that are the same as those in FIG. 1 are given the same numbers.

In FIG. 3, the bearing side plate 10 is provided with a slit 11 that is open at one end through which the impeller shaft 52 passes.
At the lower end of the bearing mounting bracket 13 is a positioning claw 19.
A small hole 12 is made for inserting the impeller, and screw holes 14 and 15 are provided on both sides of the slit 11 for inserting screws for fixing the mounting bracket 13 outside the impeller outer diameter. A stepped portion 16 is provided.

As shown in FIG. 4, the bearing mounting bracket 13 attaches the bearing 71 to the bottom 17 of the substantially concave cross section, and attaches the positioning claw part 19 to one flat part 18 with respect to the flat part plane, that is, the cross flow fan side plate plane. The other flat part 20 has a screw facing a protrusion 21 that fits into a stepped part 16 and a screw hole 14.15 provided on the side plate of the cross flow fan. It is configured by providing holes 22, 23.

The assembly work of the cross 70-fan constructed in this way is as follows. That is, the motor 6 is attached to the side plate 4 in advance, and while the impeller boss 51 is inserted into the motor shaft 61, the impeller shaft 52 is inserted into the slit 1 of the side plate.
1, while fitting the bearing 71 to the impeller shaft 52, insert the claw part 19 of the bearing mounting bracket 13 into the positioning small hole 12 of the side plate 10, and then The bearing fitting 13 can be fixed to the side plate from inside the casing with the screws 72 while the bearing fitting 13 is pressed against the side plate 10 by fitting the projection 21 of the bearing fitting 13 into the bearing fitting 16.

Through such operations, assembly and repair work can be performed efficiently with the motor attached, and the bearing can be removed from the inside of the casing and the impeller can also be removed even when the motor is assembled into equipment. Furthermore, even if repair work is frequently performed, the bearing mounting bracket is fixed by the positioning notch or small hole, so the mounting position does not shift and the impeller can always rotate in a well-balanced manner.

Effects of the Invention As described above, according to the present invention, a casing consisting of a tongue, a rear guider, and both side plates is provided, and an impeller rotatably disposed within the casing, and one of the side plates is provided with an impeller rotatably disposed within the casing. A slit with an open end into which the shaft of the impeller can be inserted is provided, a bearing mounting bracket for receiving the shaft is provided on the outside of the one side plate, and the shaft extends from the inside of the one side plate to the outside of the bearing mounting bracket. By providing screw holes on the one side plate and the bearing mounting bracket to which screws can be screwed together in the same direction, assembly and repair work can be carried out efficiently with the motor attached. Even in this state, the bearing and impeller can be removed from the inside of the casing. Furthermore, even if repair work is performed frequently, the bearing mounting position remains fixed without shifting, so the impeller can always be rotated in a well-balanced manner, which has a great practical effect.

[Brief explanation of the drawing]

Figure 1 is an exploded perspective view of a conventional Cronuflow fan, Figure 2 is a perspective view of a device using a conventional Crossflow fan,
3 is an exploded perspective view of a cross flow fan showing one embodiment of the present invention, and FIG. 4 is a sectional view of a bearing mounting bracket of the same cross flow fan. 1... Rear guider, 2... Tongue, 3, 4.10...
・Side plate, 5... Impeller, 11... Impeller shaft insertion slit, 12... Small hole for positioning the bearing mounting bracket, 13.
・・Bearing mounting bracket, 14.15・Screw hole, 16・・
・Stepped part for positioning the bearing mounting bracket, 19...Claw part, 2
1...Protrusion, 22.23...Screw hole, 71...
bearing. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
figure

Claims (2)

[Claims] (1) A casing consisting of a tongue, a rear guider, and both side plates, and an impeller rotatably disposed within the casing, and the shaft of the impeller can be inserted into one of the side plates. , a slit with an opening of 1° C. is provided, and a bearing mounting fitting for receiving the shaft is provided on the outside of the one side plate,
The one side plate and the bearing mounting fitting are provided with a screw hole through which a screw can be screwed from the inside of the one side plate toward the outside of the bearing mounting fitting. (2) The slit opening of one side plate is stepped, and a small hole is provided below the end of the slit, and a protrusion and a claw that fit into the stepped portion and the small hole are respectively attached to the bearing mounting bracket. A cross-flow fan according to claim 1.