JP2571140B2 - Motor for electric fan - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Purpose of the Invention] (Industrial application field) The present invention relates to a motor for an electric fan that facilitates installation of a motor.

(Prior Art) As shown in FIG. 3, a conventional electric motor for an electric fan has a substantially L-shaped central portion and a hole 3 for penetrating the shaft 2 as shown in FIG.
And fixing holes 1b1, 1b2, 1b3, 1b4 for inserting the screws S1 to S4,
The motor further comprises a motor mounting plate 1 having a stud 1a for rotatably mounting to a neckpiece of the electric fan, a motor 4, and a gear portion 5 for reducing the rotation of the motor 4 to the number of rotations used for the swinging rotation of the electric fan. ing. Note that 6a, 6
b is a front and rear bracket which forms a part of the motor 4 and is used for connecting the motor 4 and the gear unit 5. The configuration of this electric motor for a fan is such that screws S1 to S4 are formed by a plurality of fixing holes 1b1, 1b2,
1b3, 1b4 → 6a1, 6a2, 6a3, 6a4 of bracket 6a → Through holes 4a1, 4a2, 4a3, 4a4 provided in stator core 4a of motor 4 →
6b1, 6b2, 6b of the bracket 6b facing the bracket 6a
3, 6b4-> It is configured to be inserted into fixing holes 5e1, 5e2, 5e3, 5e4 of the gear portion 5 and screwed, and the gear portion 5 and the motor 4 are integrally formed as shown in FIG. Further, the gear portion 5 will be described. A pinion shaft 5a penetrates from the top to the bottom, and the pinion shaft 5a internally connects a gear (not shown) for changing rotation. This gear is configured to mesh with one end of the shaft 2 of the motor 4 with the worm 2a. And the pinion shaft 5a
The pinion gear portion 5b is engaged with a crank gear 5c provided on the bottom surface of the gear portion 5. A crankshaft 5d is provided at a position offset from the center of the lower surface of the crank gear 5c.

Therefore, the rotational force of the shaft 2 by the motor 4 is
Gear for changing rotation (not shown) → Pinion shaft 5a
→ Pinio gear part 5b → Crank gear 5c → Crank shaft 5d.

Here, as shown in FIG. 4, the fan 7 is attached to the link 7 for swinging the fan, the boss 8a for attaching the link 7 of the neckpiece 8, and the crankshaft 5d.

Therefore, the swing angle of the fan is determined from the distance between the stud 1a and the crankshaft 5d and the length of the link 7. The fan is configured to be able to swing by the circular motion of the crankshaft 5d.

Note that, by pulling the pinion shaft 5a upward, transmission of rotational force from the shaft 2 to the pinion shaft 5a can be cut off.

(Problems to be Solved by the Invention) However, in the above-described electric motor for a fan, since the motor 4 and the motor mounting plate 1 and the gear portion 5 are integrally incorporated, the motor mounting plate 1 and the studs provided on the motor mounting plate 1 are provided.
The dimensional tolerance of 1a + the dimensional tolerance of the bracket 6a + the dimensional tolerance of the stator core 4a of the motor 4 + the dimensional tolerance of the bracket 6b + the dimensional tolerance of the crankshaft 5d of the gear portion 5, which is provided on the motor mounting plate 1 by the above five tolerance elements. The dimensional tolerance between the stud 1a and the crankshaft 5d of the gear portion 5 becomes large. Therefore, the stud 1a is attached to the neck piece 8 of the electric fan, and the neck piece 8
In view of the fact that the boss 8a provided on the
The large dimensional tolerance (large variation) between the 5d and the stud 1a causes a problem that the swing angle of the fan differs depending on each product.

In addition, the motor mounting plate 1, bracket 6
Since a, motor 4, bracket 6b, and gear portion 5 are integrated, the function of motor 4 cannot be confirmed until these parts are assembled with screws. Therefore, for example, if the characteristics of the motor do not satisfy a certain standard, remove the screws S1 to S4, disassemble the components separately, replace them with new components, and replace these components with screws. The troublesome work of assembling with S1 to S4 had to be performed.

Accordingly, the present invention is to provide a fan motor with high productivity and high reliability in the manufacturing process with a configuration in which the dimensional tolerance that eliminates the conventional disadvantages can be minimized and the characteristics of the motor alone can be easily measured. With the goal.

[Constitution of the Invention] (Means for Solving the Problems) A rotor having a shaft provided with a worm portion at one end, a stator having a rotor insertion hole, and inserting the rotor into the rotor insertion hole, and the rotor A motor completed by fixing the stator with the front and rear brackets, a groove for penetrating the shaft of the motor on the front and rear sides, a fixing hole for fixing the motor on at least one of the front and rear sides, and a neck piece on the bottom. A motor mounting plate having a stud for mounting, and a rotational force of a shaft of the motor, which is integrally provided on a rear side surface of the motor mounting plate, is converted into a rotational force of a swing motion through a worm portion of the shaft. And a gear portion for operating a crankshaft, wherein the motor is configured such that a shaft of the motor is passed through a groove for penetrating the shaft of the motor mounting plate. To, incorporated into detachable to the fixing holes by screws, at the time of 且 motor built in which the worm portion of one end of the shaft is to be connected to the Gya portion.

(Operation) The motor is completed by fixing the rotor and the stator with screws via the front and rear brackets, and then the gear portion is integrally mounted on the rear side surface of the motor mounting plate. Then, the motor is passed through the shaft through grooves provided on the front and rear of the motor mounting plate, and the motor is detachably assembled into a fixing hole for fixing the motor with a screw. Is connected to the gear section that operates.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

First, in FIG. 1, reference numeral 11 denotes a motor as one module. The structure of the motor 11 will be described. A rotor 11a has a shaft 11b provided with a worm 11c at one end. Reference numeral 12a denotes a substantially square stator core having a bobbin 12b at a lower portion, a through hole (not shown) for screws S1 to S4, and a hole 12c for a rotor 11a at a central portion. 13a is the shaft 11b in the center
A front bracket having a through hole H and through holes 13a1 to 13a4 for screws S1 to S4 and having a bearing inside. 13b is a rear bracket having the same shape as the front bracket 13a and provided with four through holes. The upper two through-holes of the through-holes of the bracket 13b are provided with taps (not shown) for fixing the screws S1 and S2.

Therefore, the screws S1 and S2 are inserted into the upper two through holes 13a1 and 13a2 of the front bracket 13a, and the rotor 11a is inserted into the hole 12c of the stator core 12a while the front bracket 13a is inserted.
The shaft 11b is inserted into the hole H of. Further, the screws S1, S2 are inserted into the upper two through holes (not shown) of the stator core 12a, and the screws S1, S2 are inserted into the upper two through holes of the rear bracket 13b.
The motor 11 is completed by tightening and fixing.

Next, 14 is a substantially U-shaped motor mounting plate. A stud 15a for attaching to the neck piece 18 is provided on a bottom plate a forming a bottom surface of the motor attaching plate 14 so as to extend downward. On one side b, through holes 15b1 and 15b2 through which screws S3 and S4 for fixing the motor 11 pass are provided. Reference numeral 15b3 denotes a U-shaped groove, which is configured so that the shaft 11b of the motor 11 can be guided to a fixed position along the groove 15b3. Reference numeral 16e denotes a motor support portion having a substantially L-shaped cross section, which is provided on both sides of the bottom plate a so as to support the motor 11. The other side c is also provided with a U-shaped groove 15c3 for guiding the shaft 11b of the motor 11 to a fixed position, and a fixing hole 15c1 having a tap for tightening the screws S3 and S4. , 15c2 are provided. A flange 15c4 for fixing the gear portion 16 is provided at the upper end of the other side surface c. This flange
15c4 is the gear (not shown) of the gear section 16 and the shaft 11
The recessed portion 15c5 has a hole (not shown) for the worm portion 11c of b to engage with, and a hole (not shown) for mounting the gear portion 16 is provided. In this flange 15c4,
The gear portion 16 is configured to be fixed using screws S5 and S6.

The configuration of the gear section 16 will be described. First, the gear section 16
Has a gear (not shown) for transmitting the rotation of the shaft 11b of the motor 11 by the worm portion 11c at the tip, and this gear has a pinion shaft 16a as a central axis. The internal structure of the pinion shaft 16a is such that when the pinion shaft 16a is pulled up, transmission of rotation from the gears to the pinion shaft 16a is cut off, and when the pinion shaft 16a is pushed down, rotation transmission can be performed as usual. The lower part of the pinion shaft 16a is configured to be connected to the crank gear 16c. This crank gear 16c is provided with a crank shaft 16d at a position off the rotation axis. As shown in FIG. 2, a boss 18a provided on the neck piece 18 and a crankshaft 16d are connected by a link 17.

The operation of the above configuration will be described. First, the front bracket
13a, a rotor 11a having a shaft 11b, a stator core 12a having a bobbin 12b, and
To form the motor 11. Next, the gear portion 16 is integrally mounted on the flange 15c4 of the motor mounting plate 14 with the screws S5 and S6. Thereafter, the motor 11 is mounted on the motor mounting plate 14. To explain this mounting, the motor 11 is
The shaft 11b is inserted along the grooves 15b3 and 15c3 provided on the shaft 14 to the mounting position of the motor 11 so as to guide the shaft 11b. When the motor 11 is inserted to the mounting position, the motor 11 comes into contact with the motor support 16e provided on the bottom plate a of the motor mounting plate 14. In this state, the screws S3 and S4 are inserted into the through holes 15b1 and 15b2, penetrate from the front bracket 13a to the rear bracket 13b of the motor 11, and are fixed to fixing holes 15c1 and 15c2 provided on the other side surface c. Motor is completed. Therefore, the front bracket 13
a, a rotor 11a having a shaft 11b, a stator core 12a having a bobbin 12b, and a rear bracket 13b fixed by screws S1 and S2 to form a motor 11, and a motor mounting plate in which a motor mounting plate 14 and a gear unit 16 are integrally mounted. Since the motor 11 is fixed to the other side surface c, characteristics such as the number of rotations of the motor 11 alone can be measured. Further, since the motor 11 is detachable from the motor mounting plate 14, even if a situation occurs in which the characteristics of the motor 11 mounted on the motor mounting plate 14 differ from the specified range, the motor 11 can be immediately removed. Furthermore, regarding the dimensional tolerance at the time of design, the dimension between the stud 15a and the crankshaft 16d that determine the swing angle of the electric fan is determined by the dimensions of only the motor mounting plate 14 and the gear section 16. Therefore, the dimensional tolerance can be made much smaller than the conventional dimensional tolerance.

The present invention is not limited to the embodiment shown in the drawings and the detailed description.For example, the motor can be applied to a capacitor motor instead of a shading motor, and the motor mounting plate can be made of aluminum die-cast or iron plate. Well,
In this embodiment, the gear portion and the motor mounting plate are detachable. However, the gear portion and the motor mounting plate may be integrally formed. In short, the motor alone can be detached from the motor mounting plate and the gear portion. The present invention may be implemented as far as possible, and may be appropriately modified without departing from the scope of the invention.

[Effects of the Invention] According to the present invention, a conventional motor, motor mounting plate,
A motor mounting plate and a gear portion are integrally formed with the three members of the gear unit and the gear unit, which are integrally assembled using a single screw, and the motor is detachable from the mounting plate. Thus, the dimensional tolerance between the stud and the crankshaft can be reduced, and the swing angle of the electric fan can be kept substantially constant. Then, the motor can be detached as a single unit, and when the rotation speed, torque, etc. do not satisfy certain standards, the motor can be easily replaced.

Therefore, it is possible to provide a fan motor with high productivity and high reliability in the manufacturing process.

[Brief description of the drawings]

1 and 2 are views showing an embodiment of the present invention. FIG. 1 is an exploded perspective view showing a motor and a gear part integrated with a motor mounting plate. FIG. 2 is an assembled fan. FIGS. 3 and 4 are side views of a conventional motor, and FIGS.
FIG. 3 is an exploded perspective view, and FIG. 4 is a side view of an assembled state. In the drawing, 11b is a shaft, 11c is a worm, 15a is a stud, 11 is a motor, 16d is a crankshaft, 16 is a gear, 13a and 13b are brackets, 15b3 and 15c3 are grooves, c is a side surface, and 18 is a neckpiece. It is.

Claims (1)

(57) [Claims] 1. A rotor having a shaft provided with a worm portion at one end, a rotor having a rotor insertion hole, the stator inserted into the rotor insertion hole, and the rotor and the stator fixed by front and rear brackets. A motor having a completed motor, a groove for penetrating the shaft of the motor on the front and rear side surfaces, a fixing hole for fixing the motor on at least one of the front and rear side surfaces, and a stud on the bottom surface for attaching to the neck piece. A mounting portion, and a gear portion integrally provided on a rear side surface of the motor mounting plate and configured to convert a rotational force of the motor shaft to a rotational force of oscillating motion via a worm portion of the shaft to operate a crankshaft. The motor has a shaft for penetrating a shaft of the motor through a groove for penetrating the shaft of the motor mounting plate, and is attached to and detached from the fixing hole by a screw. Incorporated into standing, fan motor for at the time of 且 motor built, characterized in that the worm portion of one end of the shaft is connected to the Gya portion.