JPH0223719B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fan main body that is pivotally supported on a support member using a support shaft that is attached to a motor.

Conventionally, the spindle supporting the motor of an electric fan is directly fixed to the bracket of the motor, making it difficult to assemble the motor and resulting in poor assembly efficiency. As an improvement on this point, the
There is one described in Publication No. 71980. In the motor disclosed in this publication, both sides of the motor are held by a mounting board having a U-shaped cross section to which a support shaft is fixed, and a mounting piece of the mounting board is fixed to the flange of the motor with screws. However, since the motor is fixed to the mounting board only at the flange, the motor vibrates using the mounting piece as a fulcrum, and abnormal noise is generated between the mounting board and the motor. Further, the motor is mounted on the mounting board, and its position is difficult to determine, and the positioning of the mounting piece and the flange is time consuming and inefficient.

The present invention has been made in view of the above points, and an object of the present invention is to provide a fan in which the support shaft can be reliably attached to the motor, and the main body of the fan is supported by the support shaft attached to the motor. The motor has a mounting board for fixing the support shaft, and the front part of the mounting board is provided with a first mounting part that abuts and locks the front part of the motor, and the mounting board At the rear of the board, there is a second plate fixed to the intermediate flange of the motor.
The motor is characterized in that the mounting board is further provided with a positioning part that is locked to a locking part on the outer circumferential surface of the motor.

With this configuration, when the mounting board is attached to the motor, the positioning part of the mounting board is locked to the locking part of the motor, so that the mounting board can be easily positioned to the motor. Since the mounting board is attached to the front part and intermediate collar part of the motor by the first mounting part and the second mounting part, the mounting board can be securely mounted to the motor without moving forward, backward, left, right, up and down. It is something.

The present invention will be explained below based on the embodiments shown in FIGS. 1 to 8.

Reference numeral 1 denotes an electric fan of the present invention, and the electric fan 2 includes a stand 2 made of synthetic resin, and a support member 4 that is pivotally supported on the upper end of a column 3 protruding from the stand 2 so as to be able to freely adjust the angle of elevation and elevation.
and a fan main body 5 pivotally supported by the support member 4.

The electric fan main body 5 includes a motor 6, a mounting board 8 to which a support shaft 7 is fixed, which is mounted on the motor 6, and a swinging motor 10 mounted on the rear surface of the motor 6 via a sheet metal mounting board 9. and both the motors 6, 1
a synthetic resin cap-shaped cover 12 fixed to the mounting plate 9 covering the motor 6 with screws 11;
2, a front cover 15 from which the rotation shaft 14 of the motor 6 projects, a rear guard 16 detachably attached to the front cover 15 with a nut or the like, and a spinner attached to the rotation shaft 14. The blade 17 is detachably attached to the rear guard 16, and the front guard 18 is detachably attached to the peripheral edge of the rear guard 16.

The motor 6 includes a front bracket 6a and a rear bracket 6b formed by sheet metal press molding,
A stator 19 press-fitted and held in both the brackets 6a and 6b, and bearings 20 and 20 formed at the center of the front and rear surfaces of the front and rear brackets 6a and 6b.
It consists of a rotor 21 through which the rotating shaft 14, which is supported by the rotor 21, is inserted. Flange portions 22a, 22b are provided at the open ends of the front bracket 6a and the rear bracket 6b.
is being set up. The flanges 22a, 22b are screwed together with the screws 2.
By connecting and fixing at 3, the front bracket 6
The stator 16 and rotor 21 are assembled into the rear bracket 6a and the rear bracket 6b to complete the assembly of the motor 6. A bracket 6 of the stator 19 is attached to the front bracket 6a and the rear bracket 6b.
The amount of insertion into the rotor 21 is regulated.
Inwardly projecting protrusions 24a and 24b are formed for positioning the stator 19 and the stator 19. The end surface of the stator 19 comes into contact with the protrusions 24a and 24b to perform the above-described positioning. The protrusions 24a, 2
At least two brackets 4b are formed on both the brackets 6a, 6b, and are spaced apart from each other by a distance W on the lower surface side of the brackets 6a, 6b. The protrusion 24
a, 24b are the two brackets 6 as in the embodiment.
It is formed by cutting and raising a part of a and 6b inward,
Concave portions 25a and 25b serving as locking portions are formed on the outer peripheral surfaces of both the brackets 6a and 6b. Therefore, the recesses 25a and 25b are also located at the interval W. Note that the protrusions 24a and 24b are connected to the recess 25.
The brackets 6a and 6b may be recessed inwardly as long as they are formed so that the brackets a and 25b are formed. The front cover 1 is attached to the front bracket 6a.
A screw hole 26 is formed for attaching 5. Further, a pair of engaging portions 27 are formed on the lower half of the front surface of the front bracket 6a.

On the front edge of the mounting board 8 to which the support shaft 7 is fixed, there is a
A first mounting portion 29 is bent and has a claw piece 28 that abuts on the front surface of the front bracket 6a and engages with the engaging portion 27. A second mounting portion 31 is bent at the rear edge of the mounting board 8, and is close to the front surface of the flange 22a of the front bracket 6a, and has an arcuate edge 30 that receives the outer periphery of the front bracket 6a. ing. The mounting portion 31 that contacts the flange portion 22a has insertion holes 32, 3 through which the screw 23 is inserted.
2 is formed. the first mounting portion 29 and the second mounting portion 29;
The distance 1 between the mounting portions 31 is slightly smaller than the distance L from the front surface of the front bracket 6a to the flange 22a. Positioning portions 33 are protruded from both side edges of the mounting board 8, and the positioning portions 33
When the mounting board 8 is attached to the motor 6, the recess 2 which is the locking part of the front bracket 6a
5a, 25a to lock. The positioning portion 33 is formed with an interval W' slightly smaller than the interval W between the recesses 25a, 25a.

The mounting board 8 is attached to the motor 6 as described below. As shown in FIG.
After engaging with the engaging portion 27 of a, the claw piece 28
The mounting board 8 is rotated using the arc edge 30 of the second mounting portion 31 of the mounting board 8 as a fulcrum.
is brought into contact with the outside of the front bracket 6a.
At this time, the positioning portion 33 engages with the recess 25a, and the mounting board 8 is brought into contact with the motor 6 at a normal position. In this embodiment, the distance W' between the positioning portions 33 is
a is slightly smaller than the interval W, the positioning portion 33 is brought into contact with the opening edge and the recess 25
By holding the front bracket 6a with the front bracket 6a, the mounting board 8 can be mounted on the motor 6 without wobbling. Further, the front bracket 6a is temporarily held by the positioning portion 33, so that screwing, which will be described later, can be easily performed. The mounting portion 31 of the mounting board 8 which is brought into contact with the front bracket 6a is fixed to the flange portion 22a by a screw 23 which connects and fixes the flange portions 22a and 22b. Therefore, since the mounting board 8 is attached to the front and side surfaces of the motor 6, the mounting board 8 can be securely attached to the motor 6 without moving forward, backward, left, right, up and down. Furthermore, in this embodiment, a screw 2 is used to connect and fix the flanges 22a and 22b.
3 to attach the attachment part 31 to the collar part 22a, the attachment of the attachment board 8 to the motor 6 can be completed at the same time as the motor 6 is assembled. Also, the distance l between the mounting portions 29 and 31
is slightly smaller than the width L of the front bracket 6a, so when the attachment part 31 is attached to the flange part 22a of the front bracket 6a, the attachment part 31 is attracted to the flange part 22a, and the attachment part 29 is attached to the front bracket 6a. It is brought into close contact with the front surface of the bracket 6a, which further eliminates rattling between the motor 6 and the mounting board 8, and ensures reliable mounting.

In the above-mentioned embodiment, the attachment portion 29 is attached to the front surface of the front bracket 6a using the pawl piece 28 and the engaging portion 27, and the attachment portion 31 is attached to the collar portion 22a using the screw 23. However, there is no particular limitation, and various attachment methods are possible. For example, an engaging portion may be formed on the flange portion 22a, a claw piece that engages with the engaging portion may be formed on the mounting portion 31, and the mounting portion 29 and the front bracket that abut the front surface of the front bracket 6a may be formed. A screw hole or an engagement hole may be formed in the front cover 6a, and the front cover 15 may be screwed together with the screw for attaching the front cover 15, or a pin protruding from the front cover 6a may be inserted into the engagement hole. A mounting board 8 may be attached to the motor 6.

As described above, the present invention has a mounting board to which the support shaft is fixed, in which the main body of the electric fan is pivotally supported on the support member by a support shaft attached to a motor, and the front part of the mounting board is The mounting board includes a first mounting part that abuts and locks on the front surface of the motor, a second mounting part that is fixed to the intermediate flange of the motor at the rear of the mounting board, and a second mounting part that is fixed to the intermediate flange of the motor. The device is equipped with a positioning portion that locks onto a locking portion on the outer peripheral surface, so that the mounting board can be easily positioned on the motor, and the mounting board can be easily and securely mounted on the motor without rattling. In addition, by attaching the mounting board to the motor, the spindle can be easily attached to the motor.

[Brief explanation of drawings]

Fig. 1 is a side view of the electric fan of the present invention, Fig. 2 is a sectional view of the motor portion of the fan, Fig. 3 is a plan view of the motor portion with the cover removed, Fig. 4 is a rear view, and Fig. 5 is a cross-sectional view of the motor portion of the fan. An exploded side view showing the attachment of the mounting board to the motor, FIG. 6 is a cross-sectional view of FIG. 2,
FIG. 7 is a rear perspective view of the front bracket, and FIG. 8 is an exploded perspective view of the main parts. DESCRIPTION OF SYMBOLS 1...Fan, 4...Support member, 5...Fan main body, 6...Motor, 7...Spin shaft, 8...Mounting board, 6a...Front bracket, 19...Stator, 2
2a...Flame, 24a...Protrusion, 25a...Recess, 29...Mounting part, 31...Mounting part, 33...
Positioning part.

Claims (1)

[Claims] 1. In a device in which the main body of the fan is pivotally supported on a support member by a support shaft attached to a motor, there is a mounting board to which the support shaft is fixed, and the front part of the mounting board has a mounting board attached to the front surface of the motor. a first mounting part that abuts and locks; a second mounting part that is fixed to the intermediate flange of the motor at the rear of the mounting board; and a second mounting part that locks the outer peripheral surface of the motor to the mounting board. An electric fan characterized by comprising a positioning part that locks into the part.