JPH0350915B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cross flow fan supported by a removable motor at one end and a fixed bearing at the other end.

Conventional configuration and its problems Conventionally, this type of cross flow fan has been configured as shown in FIG. In other words, rear guider 1
In a cross-flow fan in which an impeller is housed in a casing 6 consisting of a tongue portion 2 and side plates 3 and 4, one end of the impeller 5 has a boss 5a and a shaft 5 at the other end.
b, which are fitted to the motor shaft 6a and a bearing 7 fixed to the side plate, respectively, to rotate the impeller. The motor 6 is fixed to the side plate via a mounting bracket 8 with screws 9 and 10. Therefore, in order to take out the impeller, it is necessary to remove the screw 9 while supporting the weight of the motor and pull the motor out in the axial direction, which is extremely difficult to work with and there is not enough space in the axial direction to take out the motor. It was necessary. Furthermore, a space for a screwdriver is required for tightening and loosening the screws, which hinders miniaturization of the device.

OBJECTS OF THE INVENTION The present invention aims to eliminate such conventional drawbacks, and aims to efficiently perform assembly and repair work of a cross flow fan, and to downsize the device.

Structure of the Invention In order to achieve this object, the present invention provides a casing comprising a rear guide, a tongue, a first side plate on which a motor is attached, and a second side plate to which a bearing is fixed, and a blade provided in the casing. a motor for driving the impeller, and a motor mounting bracket for attaching the motor to the first side plate, and the first side plate has a folded part bent at a right angle toward the casing at its upper end. and providing a slit into which the motor shaft is inserted from the upper end side between the folded portion and the center of the first side plate, further providing a fitting portion below the slit into which the motor mounting bracket is fitted;
and a screw hole into which a screw for mounting a motor mounting bracket is screwed is formed in the folded part, and the motor mounting bracket has a screw hole for fixing the motor and has an upper end bent at a right angle to be placed on the folded part. The present invention is a cross-flow fan in which a folded portion is formed, and a screw hole is formed in the folded portion opposite to the screw hole, through which a screw for attaching a motor mounting bracket is inserted.

With this configuration, the motor can be installed and removed by inserting and removing the motor shaft from the upper end of the first side plate of the casing through the slit, which eliminates the need for extra space in the axial direction and allows for downsizing. This improves the workability of attaching and detaching the motor during assembly and repair.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. 2. In FIG. 2, parts that are the same as those in FIG. 1 are given the same numbers.

In FIG. 2, the side plate 4 is provided with a slit 4a through which the shaft 6a of the motor 6 passes, and its upper end is bent at a right angle, and a screw hole 4c for fixing the motor mounting bracket 11 is formed in the folded part 4b. ing. Furthermore, a bag-shaped projection 4d is formed below the end of the slit as a fitting portion for receiving the projection 11a at the lower end of the motor mounting bracket.
The motor mounting bracket 11 has the folded part 4 at its upper end.
A screw hole 11c forms a folded part 11b bent at right angles to rest on the screw hole 4c, and faces the screw hole 4c.
is formed in the folded portion 11b. In the above embodiment, assembly is performed in the following steps. Connect the motor 6 to the motor mounting bracket 11, screw 9 and seat nut 12.
It is attached via the anti-vibration rubber 13. Next, the motor shaft 6a of the motor 6 is attached to the boss 5 of the impeller 5.
a, and while inserting the shaft 5b of the impeller 5 into the bearing 7 of the casing 1, the motor shaft 6a is dropped into the slit 4a. Further, the motor mounting bracket is positioned by inserting the convex portion 11a of the motor mounting bracket 11 into the bag-shaped protrusion 4d of the side plate 4, and placing the folded portion 11b on the folded portion 4b of the side plate 4. Finally, the screws 14 are passed through the screw holes 11c and 4c to be fixed to the folded portion 4b on the upper end side of the side plate 4. Further, the removal of the motor 6 may be performed in the reverse order to the above-described order.

In this way, the motor 6 and the motor mounting bracket 11 can be moved up and down along the side plate 4, and the motor shaft 6a can be moved in and out of the slit 4a. Further, the convex portion 11a of the motor mounting bracket 11 is received by the bag-like protrusion 4d of the side plate 4, making positioning of the motor easy and eliminating the need to support the weight of the motor, improving work efficiency.

Effects of the Invention As described above, according to the cross flow fan of the present invention, the following effects can be expected.

(1) Since the motor and impeller can be attached and detached along the side plate of the casing through the slit, there is no need for extra space in the longitudinal direction of the casing for attachment and detachment, and the longitudinal dimension can be reduced.

(2) The folded part of the motor mounting bracket and the folded part of the side plate of the casing can be overlapped and the screws of both folded parts can be tightened from the same side, improving the workability of attaching and removing the motor.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a conventional cross flow fan, and FIG. 2 is a perspective view of a cross flow fan showing an embodiment of the present invention. 1... Rear guider, 2... Tongue, 3, 4... Side plate, 4a... Slit, 4b... Turned part, 4d
...Facility, 5... Impeller, 6... Motor, 7
... Bearing, 11 ... Motor mounting bracket, 13 ... Anti-vibration rubber.

Claims (1)

[Claims] 1. A casing composed of a rear guider, a tongue, a first side plate to which a motor is attached, and a second side plate to which a bearing is fixed, an impeller provided within the casing, a motor that drives the impeller, and the motor. a motor mounting bracket for attaching the motor to the first side plate, and the first side plate has a folded part bent at a right angle toward the casing at its upper end, and a section extending from the folded part to the center of the first side plate. A slit into which the motor shaft is inserted from the upper end side is provided, a fitting part into which the motor mounting bracket fits is provided below the slit, and a screw hole into which the screw for attaching the motor mounting bracket is screwed is provided in the folded part. The motor mounting bracket has a screw hole for fixing the motor, and a folded part bent at a right angle to be placed on the folded part is formed at the upper end thereof, and a folded part is formed in the folded part opposite to the screw hole. A cross flow fan with a screw hole for inserting the screw for attaching the motor mounting bracket.