JPH01305198A - Electric fan - Google Patents

Abstract

PURPOSE:To make the use in the standing state convenient so as to obtain a sufficient wind quantity by arranging a blowing fan and motor on one side and a source battery on the other side and providing a stand freely closable on the surface of a cover for covering an accumulating part of the source battery. CONSTITUTION:There are provided a blowing fan 15 and motor 2 on one side of a fan case 1 and a source battery 3 on the other side thereof. There is also provided a stand freely closable on the surface of a cover for covering an accumulating part of the source battery 3. With this arrangement, as a switch is turned on, the blowing fan is rotated so as to obtain a sufficient quantity of wind through the air hole of the fan cover 17. In this case, the whole of the electric fan can be used by the hand and also can be used in the state that the stand is stood and the fan is located on a desk.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a cordless electric fan that can be held in the hand or placed on a table.

BACKGROUND OF THE INVENTION Conventionally, this type of electric fan has been cordless and portable, but since the stand spanned the entire backside of the electric fan, there were various problems when using the electric fan with the stand upright and set down.

Also, the hole on the back side of the fan case that sucks in the wind was approximately the same length as the outside diameter of the blower fan.

Problems to be Solved by the Invention With such a conventional configuration, when used in a standing position, the stand may block the ventilation holes, the stand may make the entire fan larger, and the fan may be unbalanced when placed. There was a problem.

In addition, regarding the amount of air blown, in order to obtain a sufficient amount of air blown, the outer diameter of the blades must be increased, which causes the problem that the outer diameter of the fan case becomes larger.

The present invention solves these problems, and when used by placing it on a desk, etc., the ventilation holes of the stand are not obstructed, and the stand itself is compact, so that when the stand is placed upright, it does not block the fan. It is a well-balanced.

Also, the structure is such that a sufficient amount of air can be obtained.

Means for Solving the Problems In other words, the present invention provides a system in which a blower fan and motor are disposed on one side, a power supply battery is disposed on the other side, and a stand that can be opened and closed is provided on the surface of the lid that covers the power supply battery compartment. It is something that In addition, in order to obtain a sufficient amount of air, a notch is provided at the circumferential end from the back side hole of the fan case to the same area as the front end surface of the fan case, extending almost all the way around the fan case.

Function: Due to this configuration, the stand is compact, making it easy to carry, and also allows the fan to be installed in a well-balanced manner when used as a stand-alone device.

Further, according to this configuration, even a small blade can provide a sufficient amount of air.Examples of the present invention will be described with reference to FIGS. 1 to 5. In the figure, 1 is a fan case, and this fan case 1 includes a motor 2 and its power battery 3, and this power battery 3.
A negative spring 4, a positive spring 6, a battery lead 6, and a lead 8 extending through the positive spring 6 and reaching the switch 7 are provided. The cord coming out from the other terminal of the switch 7 is connected to the positive terminal of the motor 2 via the positive lead 9.
A negative terminal of the motor 2 is connected to a negative spring 4 via a negative lead 1o.

A lid 11- is provided on the portion facing the power source battery 3, which accommodates the above-mentioned components. This lid 11 has a stand 12
One end is fixed so that it can be raised and lowered freely, and the other end can be opened. Note that the fan case 1 is provided with a notch 13 almost all around the circumference.

14 is a ventilation hole provided in the fan case 1.

16 is a fan for blowing air and is attached to the motor 2.

15& is a front end surface of the ventilation fan, and the notch portion 13 is provided up to the same height as this front end surface 16a. 16
Attach the fan cover 17 with the cover and attach the cover 1'6.
is fitted into the fan case 1.

Next, the operation will be explained. When the switch 7 is turned on, the ventilation fan 16 rotates, and the air sucked in through the ventilation holes 14 is discharged through the air holes in the fan cover 17. At this time, the electric fan may be used by holding it in its entirety, or by raising the stand 12 as shown in FIGS. 4 and 6, it can also be used as a device on a desk.

Next, the operation will be explained. When the switch is turned on, air is sucked in from both the notch 13 provided in the fan case 1 and the ventilation hole 140 as the ventilation fan rotates 160 times, and a sufficient amount of air is drawn from the air hole in the fan cover 17. comes out.

In addition, in this type of electric fan, the motor is fitted into the case and the blades are fixed to the motor.

However, with this type of configuration, force is required to remove the motor during repair, and because the solid parts fit together, the fit becomes loose when reassembled after removal.
The problem was that it was difficult to stop.

In the present invention, a motor is provided inside the center of a blade, a motor mounting bracket is provided with a plurality of protrusions on the outer periphery for fixing the motor to a case, and the blade is fitted into the motor and the protrusions are attached to the motor mounting bracket. An opening is provided at a position opposite to the .

Illustrated in the diagram. In Fig. 6, 1 is the case, and the motor 2
is fixed to the case 71 by a motor mounting bracket 2a and a plurality of protrusions 2a' provided on the outer periphery of the motor mounting bracket. When repairing or replacing the motor 2, remove the motor mounting bracket 21 from the case 1 by turning the protrusion 2a/ provided on the motor mounting bracket 2a through the opening 16b provided in the blade 16.
After removing the motor 2 and the blades 16, the motor 2 can be replaced.

Effects of the invention 1', J. As described above, according to the present invention, in an extremely small and thin electric fan, it is possible to provide the metand in a well-balanced manner without blocking the ventilation holes or making the whole structure too large. It is a characteristic of The present invention makes it convenient to use in an upright position by providing a stand integrally with the lid so that it can be opened and closed freely, and it is also possible to obtain a sufficient amount of airflow.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view showing an electric fan according to an embodiment of the present invention, FIG. 2 is a top view with main parts cut away, and FIG. 3 is a bottom view.
FIG. 4 is a perspective view of the electric fan with the stand raised, FIG. 6 is a perspective view of the electric fan set up on a table with the stand, and FIG. 6 is a sectional view of the motor fixed to the case with a mounting bracket. 1...Fan case, 2...Motor,
21L...Motor mounting bracket, 21L'...
...Convex part, 3...Power battery, 4...Minus spring, 6...Positive spring, 6 Battery lead, 7...Switch, 8... ...Lead, 9
...Positive lead, 1o...Negative lead, 11...Lid, 12...Stand, 13...Notch, 14. ...Ventilation hole, 16...Blower fan, 15a...
...Front end surface of the ventilation fan, 16...Cover,
1 completed...Fan cover. 1-71: Nogusu 2-, -'e-ta 3,, -'rt bowl 5bi 11-・-I-catty 12-1-su 9so Y IS (L-it! Is it possible to contribute to the hanging faso? Glance☆■Ig--Kaha'- 17-)yy cover-

Claims (3)

[Claims] (1) An electric fan that is equipped with a blower fan and a motor on one side of a fan case and a power source battery on the other side, and a stand that can be opened and closed is provided on the surface of a lid that covers a power source battery compartment. (2) A box-shaped fan case that sucks air from the rear and the outer diameter direction of the blower fan is provided, and the notch at the peripheral end is inserted through the back side hole of the fan case until it reaches the same part as the front end surface of the blower fan. A fan installed almost all around. (3) A motor provided inside the center of the blade, and a motor mounting bracket provided with a plurality of protrusions on the outer periphery for fixing the motor to the case, the blade being fitted into the motor; An electric fan having an opening at a position opposite to the protrusion.