JP2002115693A - Electric fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric fan allowing easily detaching a stand from a stand base. SOLUTION: This electric fan is comprised of a stand 1 supporting an electric motor, a stand base 2 having a recess part formed on the upper surface side for detachably fitting the stand 1, and a pair of pawls 5 to engage with projection ribs 4 provided on a inner surface of the recess part of the stand base 2 is provided on both sides of a lower end of the stand 1. An operation part 8 to apply a energizing force to the pawls 5 in the direction of releasing an engagement of the pawls 5 of the stand 1 with the projection ribs 4 of the stand base 2 is provided on a bottom surface of the stand base 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an electric fan. More specifically, the present invention relates to an electric fan whose stand can be easily removed from a stand base.

[0002]

2. Description of the Related Art Conventionally, there is an electric fan in which a stand having an electric motor and a stand base as a pedestal portion can be detachably connected so that the electric fan can be compactly packed.

As shown in FIGS. 7 and 8, such a fan includes a stand 31 for supporting an electric motor M, and a stand base having a concave portion 33 formed on an upper surface side for detachably fitting the stand 31. As shown in FIG. 32 and the stand 31
On both sides of the lower end, a pair of claws 35 for engaging with a projection rib 34 which is an engaged portion provided on the inner surface of the concave portion 33 of the stand base 32 is provided. Also, stand 3
A rib 39 is protrudingly provided on the front side of the lower end.
9 is engaged with a slit 40 formed on the inner surface of the concave portion 33 of the stand base 32.

[0007] As shown in FIGS. 7 to 10, the projecting rib 34 is formed integrally with the side wall 36 of the concave portion 33 of the stand base 32 and protrudes inward of the concave portion 33. The nail 35
It is usually formed integrally with the stand 31 by a synthetic resin or the like.

Conventionally, as shown in FIGS.
The finger is brought into contact with the operation portion 35a of the nail 35 through the hole 38 of the bottom plate 37 that covers the bottom surface of the stand base 32, and the pair of right and left claws 35 is narrowed from both sides in the direction in which the distance between the claws 35 is reduced (arrow X in FIG. ), The claw 35 engaged with the projection rib 34 of the stand base 32 comes off. Thereby, the stand 31 is moved to the stand base 32.
Can be separated from

[0006]

However, in the above-mentioned conventional electric fan, the claws 35 of the stand 31 are connected to the stand base 32.
In order to remove the left and right claws 35 from the projection ribs 34, it is necessary to directly press both the left and right claws 35 with fingers. At this time, finger 35
To remove the projection rib 34 by pressing, it is very hard, and to push the claw 35 at the same time, because the distance is large,
It is a difficult task to remove both claws 35 at the same time.

In addition, the stand 31 cannot be separated from the stand base 32 unless the claw 35 is pushed and spread and then removed from the projection rib 34 of the stand base 32 and then the stand 31 is further pushed upward. As a result, two processes are required.

The present invention has been made to solve such a problem, and an object of the present invention is to provide a fan capable of easily removing a stand from a stand base.

[0009]

A fan according to the present invention comprises a stand for supporting an electric motor, and a stand base having a concave portion formed on an upper surface for detachably fitting the stand. A fan provided on both sides of the stand base with a pair of claws for engaging an engaged portion provided on an inner surface of the recess of the stand base, wherein the stand base has a claw on the bottom surface. An operating portion for applying a biasing force in a direction in which the stand base is disengaged from the engaged portion is provided.

[0010] It is preferable that the operating portion has a wedge-shaped rib.

[0011] It is preferable that the operating portion includes an elastic tongue.

Preferably, a horizontal portion is provided at a lower end of the wedge-shaped rib of the operation portion so as to continuously urge the claw of the stand upward.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The fan of the present invention will be described in further detail with reference to the drawings. 1 is a bottom view showing an embodiment of the electric fan of the present invention, FIG. 2 is a top view of a bottom plate of FIG. 1, and FIG. 3 is an enlarged sectional view of an engagement portion between the stand and the stand base of FIG. 4 is an arrow A view of FIG.
5 is a cross-sectional explanatory view showing a state in which the operation of the operation unit of FIG. 3 is being disengaged from the claw and the projection rib, and FIG. 6 is a diagram of the operation of operating the operation unit of FIG. 3 to push the claw further upward. It is sectional explanatory drawing which shows a mode.

The fan of the present invention comprises a stand and a stand base, as shown in FIGS.
The configuration is the same as that of the conventional fan in that the engaging portions on both sides of the lower end of the stand and the engaged portion on the inner surface of the concave portion of the stand base are engaged.

However, the electric fan of the present invention is greatly different in that it has an operation section 8 for operating the claw 5 of the stand 1 as shown in FIGS.

That is, as one embodiment of the present invention,
The electric fan shown in FIGS. 1 to 6 includes a stand 1 for supporting the electric motor, and a stand base 2 having a rectangular recess 3 formed on the upper surface side for detachably fitting the stand 1. A pair of claws 5 is provided on both sides of the stand base 2 for engaging with a projection rib 4 which is an engaged portion provided on the inner surface of the recess 3 of the stand base 2. Further, on both sides of a bottom plate 7 provided on the bottom surface of the stand base 2, an operation section 8 for applying a biasing force to the claw 5 of the stand 1 in a direction of releasing the engagement with the projection rib 4 of the stand base 2. Is provided.

The operating portion 8 is provided with a plurality of wedge-shaped ribs 9 for applying a horizontal urging force to the claw 5, for example.
have. On the wedge-shaped rib 9, stand 1
Is located. Further, it is preferable to provide a gap of about 0.2 mm between the rib 9 and the claw 5 because no urging force is applied to the claw 5 on the stand 1 side in a normal state where no operating force is applied.

The operating section 8 includes an elastic tongue piece 10.
Is provided, when the operating force is applied, the rib 9 moves upward.
Can return to the original position by the restoring force of the tongue piece 10.

In addition, since the fan 10 has the tongue piece 10, it has a structure in which no holes are formed when viewed from the back side of the electric fan, and has a simple and simple shape.
Moreover, the ratio of foreign matters such as dust entering the inside of the stand base 2 is reduced. In addition, it is preferable that a mark 12 indicating a position to be pressed by a finger is provided at an appropriate position on the tongue piece 10 on the lower surface shown in FIG.

As shown in FIGS. 3 to 5, when the wedge-shaped ribs 9 provided on both sides of the bottom plate 7 are pushed up from below by a finger, the ribs 9 and the claws 5 come into contact with each other. ,
The rib 9 moves in the direction of the arrow X while sliding on the slope of the rib 9, and is disengaged from the projection rib 4. Therefore, the claw 5 can be easily removed, and the operating force is much smaller than in the past. Moreover, since the stand can be removed without damaging the finger with the end surface of the resin such as the nail 5,
A woman can safely remove the stand.

As shown in FIGS. 5 and 6, in this embodiment, the horizontal portion for urging the claw 5 of the stand 1 upward continuously from the lower end of the wedge-shaped rib 9 of the operating portion 8 is provided. Since the portion 11 is provided, the rib 9 of the bottom plate 7 is provided.
Is further pushed upward by a finger, so that the claw 5 slides to the lower end of the wedge-shaped rib 9 and then stops at the horizontal portion 11, and the horizontal portion 11
Can be pushed upward.

[0022]

According to the present invention, since the operating portion is provided on the bottom surface of the stand base, a small operating force is required, it is easy to remove both claws at the same time, and only one push-up operation is required. The stand can be separated by removing the claws.

[Brief description of the drawings]

FIG. 1 is a bottom view showing an embodiment of a fan of the present invention.

FIG. 2 is a top view of the bottom plate of FIG. 1;

FIG. 3 is an enlarged sectional view of an engagement portion between a stand and a stand base in FIG. 1;

FIG. 4 is a view on arrow A in FIG. 3;

FIG. 5 is a cross-sectional explanatory view showing a state in which the operation of the operation unit shown in FIG. 3 is being released from engagement between the claw and the projection rib.

FIG. 6 is a cross-sectional explanatory view showing a state in which a nail is further pushed upward by operating the operation unit of FIG. 3;

FIG. 7 is a partially cutaway front view of a conventional fan.

FIG. 8 is a cross-sectional view showing a state in which the stand of FIG. 7 is being separated from the stand base.

FIG. 9 is an enlarged sectional view of an engagement portion between the stand and the stand base in FIG. 7;

FIG. 10 is a view of the engagement portion between the stand and the stand base in FIG. 7 as viewed from below.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stand 2 Stand base 4 Projection rib 5 Claw 8 Operation part

Claims (4)

[Claims] 1. A stand for supporting an electric motor, and a stand base having a recess formed on an upper surface side for detachably fitting the stand, and a recess of the stand base is provided on both sides of a lower end of the stand. A fan provided with a pair of claws for engaging an engaged portion provided on the inner surface of the stand base, wherein the stand claw is provided on the bottom surface of the stand base with the engaged portion of the stand base. An electric fan provided with an operation unit for applying a biasing force in a direction in which the engagement of is released. 2. The electric fan according to claim 1, wherein the operation section has a wedge-shaped rib. 3. The electric fan according to claim 1, wherein the operation section includes a tongue piece having elasticity. 4. The electric fan according to claim 2, wherein a horizontal portion is provided at a lower end of the wedge-shaped rib of the operation portion to continuously urge the claw of the stand upward.