JP3143415B2 - Fan - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric fan capable of dividing a stand into a base and a column.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Utility Model Publication No. 57-58478 (F16M 11/20) is known as an electric fan that can divide a stand into a base and a column. In this electric fan, a column support having a first terminal is recessed on an upper surface of a base, and a first support is provided.
A column having a second terminal detachably connected to the terminal at the column lower end is inserted into the column support portion, and a screw is screwed into a screw hole of the column through a hole formed in the base rear surface from the base rear surface side. And the strut are integrated.

However, when inserting the support into the base, it is necessary to check the positions of the first terminal and the second terminal, and to insert them carefully so as not to cause a positional shift. It has.

Further, if the support is forcibly inserted into the base with the first terminal and the second terminal being displaced from each other, the terminal may be damaged.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned drawbacks, and has improved a workability of assembling a base and a column with a simple structure, and a terminal for electrically connecting the base and the column. An object of the present invention is to provide a fan that can prevent breakage of a fan.

[0006]

Means for solving the above problems include a base, a column supporting portion provided on the base and having an upper opening and a lower opening on the upper surface and the lower surface of the base, respectively; A support having a support inserted from an upper opening of the support and supported by a peripheral wall of the support, and a protrusion provided below the support and protruding downward from the lower surface of the base through a lower opening of the support of the support. A fixing member attached to a projecting portion projecting from the lower surface of the base to fix the base and the support, a first terminal provided on the support of the support of the base, and a first terminal provided on the support of the support. A second terminal detachably connected to the one terminal, a fan head supported on an upper portion of the column and having an electric motor, a fan rotationally driven by the electric motor, and a guard body covering the fan; And said Provided with a plurality of projections projecting toward the inner post support portion to the post support opening edge of over scan,
A concave portion for receiving the protrusion is provided on the support portion of the column.

[0007] In the means for solving the above problems,
In a state where the fixing member is attached to the protruding portion projecting from the lower surface of the base, it is preferable that the fixing member abut on the lower surface of the base located substantially below the fitting surface between the protruding portion and the concave portion.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIGS.
Details will be described below based on the electric fan 1 shown in FIG.

Reference numeral 2 denotes a stand for the electric fan 1, and a base 3 and
It comprises a support column 4 detachably mounted on the base 3, a slide pipe 5 slidably supported by the support column 4, and a neck piece (not shown) supported on the upper end of the slide pipe 5 so as to be capable of raising and lowering. . A fan head having an electric motor is supported on the neck piece so as to be able to swing left and right. 6 is a fan detachably attached to the electric motor, 7
Is a guard that is detachably attached to the fan head by covering the fan 6.

The base 3 includes a base 8 made of synthetic resin having an open lower surface, and a metal lid 9 for closing the lower surface of the base 8. Reference numeral 10 denotes a column supporting portion formed at a substantially central portion of the base 3. An annular groove 11 serving as an engaging portion is formed on the periphery of the column supporting portion 10 on the upper surface of the base 3, and a lower portion of the column supporting portion 10 is formed. A substantially annular concave groove 12 serving as an engaging portion is formed on the periphery. Numeral 13 denotes a positioning projection formed to bulge in the vertical direction from the peripheral wall of the support column 10 toward the inside of the support column 10.
Is inserted into the positioning recess 33 provided in the base member 3 to prevent the support column 4 from rotating with respect to the base 3. Reference numeral 14 denotes an annular engaging groove formed at the lower end of the peripheral wall of the column supporting portion 10 of the base 8, and an annular rising piece 24 of the lid 9 described later fits therein.

Reference numeral 15 denotes a rib formed from the back surface of the base 8 and connecting the peripheral wall of the base 8 to one of the positioning projections 13 to form a storage chamber 17 for storing a power cord 16 and to form a power cord 16 therein. Are supported via a bushing 18, and the ribs 15 are formed from the positioning projections 13 to reinforce the positioning projections 13. Reference numeral 19 denotes a board fixed to the back surface of the base 8, and has a switch or the like operated by an operation piece 20 provided on the base 8. Reference numeral 21 denotes a safety switch fixed to a boss (not shown) formed from the back of the base 8 and disposed on the other positioning projection 13.
When the fixing member 35 is screwed to a support portion 25 of the support 4 to be described later by projecting the fixing member 35 from the lid 9 to the back surface, power is supplied to the substrate 19 by operating the fixing member 35. I have. Reference numeral 23 denotes a first terminal provided below the support column 10, and is supplied with power from the substrate 19.

A substantially ring-shaped rising piece 24 is formed by pressing on the periphery of an opening forming the column supporting portion 10 of the lid 9 by pressing, and the rising piece 24 is attached to the base 8.
The supporting column 10 is fitted into an engaging groove 14 provided at the lower end of the peripheral wall.

Reference numeral 25 denotes a support portion formed at the lower portion of the support column 4. The support portion 25 includes a base 26 formed integrally with the support column 4, and a screw portion 27 fixed to the base portion 26 and to which a fixing member 35 described later is screwed. And a screw body 28 having the same. Base 26 of the support 25
In addition, a flange portion 29 is formed on the upper portion of the support portion 25, and an annular rib 30 serving as a locking portion to be fitted downwardly from the flange portion 29 to the concave groove 11 on the upper surface of the base 8 is formed. At the lower end of the base 26 of the portion 25, a fitting portion 31 serving as a locking portion that fits into the concave groove 12 on the lower peripheral edge of the support member 10 is formed. Reference numeral 32 denotes a second terminal provided on the lower surface of the support portion 25, and a first terminal 23 provided at the lower end portion of the column support portion 10 is detachably connected to supply electric power to the electric motor. Reference numeral 33 denotes a positioning recess formed on the side surface of the base 26 of the column 4 so as to correspond to the positioning projection 13 of the column support 10. The positioning recess 13 is positioned when the support 25 is inserted into the column support 10. The support portion 25 is positioned with respect to the column support portion 10 by fitting the
25 rotations are regulated. Numeral 34 denotes an engagement claw formed on the screw body 28. The engagement claw 34 engages with the lower surface of the column support 10 when the support 25 is completely inserted into the column support 10, and the column 4
To the base 3 temporarily.

Reference numeral 35 denotes a ring-shaped synthetic resin fixing member for fixing the support column 4 to the base 3 and having a substantially U-shaped cross section having an outer peripheral wall, an inner peripheral wall, and a bottom wall. The threaded portion 36 formed on the support 4 is screwed to the threaded portion 27 of the support 4 to fix the support 4 to the base 3. The fixing member 35 faces the lower end of the peripheral support wall 10 of the support 3 of the base 3 and the first terminal 23 and the second terminal 32 in a state of being screwed to the screw 27 of the support 4, and operates the safety switch 21. The portion 22 is pressed. Further, the fixing member 35 includes:
A plurality of reinforcing ribs for connecting the outer peripheral wall and the inner peripheral wall are formed, and one of the reinforcing ribs is formed higher than the other reinforcing ribs, and the reinforcing ribs are screwed to the screwing portions 27 of the support columns 4. Abuts on an extension rib (not shown) extending downward from the lower end of the support member 10 to prevent the fixing member 35 from being overtightened.

Next, a method of attaching the support 4 to the base 3 will be described. The support 25 of the support 4 is replaced with the support 10 of the base 3
Then, the positioning projection 13 is fitted into the positioning recess 33 and inserted. During this insertion operation, the positioning projections
Since the terminals 13 are fitted to each other, the first terminal 23 and the second terminal 32 are prevented from being displaced from each other, thereby preventing each terminal from being damaged.

Further, even if the first terminal 23 and the second terminal 32 are misaligned and the support 4 is forcibly mounted on the base 3, the bottom of the support 4 hits the plurality of positioning projections 13 and the support 4 is inserted into the base 3. The first terminal 23 and the second terminal 32 are prevented from being damaged.

Further, the fitting of the positioning recess 33 and the positioning projection 13 restricts the rotation of the support portion 25 to prevent an excessive force from being applied to the first terminal 23 and the second terminal 32.

The support portion 25 of the support 4 is a support portion of the base 3
When the support 3 is completely mounted, the engagement claws 34 formed on the base 26 of the support 25 engage with the lower surface of the support 10 to temporarily fix the base 3 and the support 4. In order to screw the fixing member 35, it is necessary to invert the support 4 together with the base 3, but since the base 3 and the support 4 are temporarily fixed, the inversion operation must be performed.
In addition to the above, it is possible to prevent the base 3 from falling off during the inversion and during the inversion state, and it is possible to improve the assembling workability.

The base 3 and the column 4 are reversed in a temporarily fixed state, and the fixing member 35 is screwed into the screwing portion 27 of the support portion 25 to fix the base 3 and the column 4. By the screwing of the fixing member 35, the operating portion 22 of the safety switch 21 is pressed by the fixing member 35,
Power can be supplied to the motor via the terminal 23 and the second terminal 32, and the assembly of the base 3 and the support 4 is completed.

Since the fixing member 35 is screwed at a position facing the fitting surface with the positioning concave portion 33 and the positioning protrusion 13,
The column support portion 10 and the support portion 25 can be firmly tightened, and can be attached to the base 3 in a stable state without shaking the column 4, thereby suppressing excessive force from being applied to each terminal. Terminal damage is prevented.

Further, the annular rib 30 on the upper part of the support part 25 is fitted into the concave groove 11 on the peripheral edge of the upper part of the support part 10, and
Since the lower fitting portion 31 fits into the concave groove 12 on the lower peripheral edge of the support column 10, the support column 4 may be fixed in a state where the fixing member 35 is not screwed or in a state where the fixing member 35 is not completely tightened. Therefore, even when an external force is applied in the lateral direction, the support pillar 4 is supported in a more stable state by the fitting between the annular rib 30 and the concave groove 11 and the fitting between the fitting portion 31 and the concave groove 12.

When the base 3 is stepped on by mistake,
The inner wall of the column support 10 tries to deform in the inner diameter direction,
The fitting portion 31 of the support portion 25 is fitted into the concave groove 12 below the column support portion 10, and the rising piece 24 of the lid 9 is engaged with the engagement groove 14 of the base 3.
The strength of the column support 10 is improved because
The deformation of the peripheral wall of the support column 10 is prevented. When the flange 29 of the support 4 is stepped on by mistake, the flange 29 of the support 4 tries to deform so as to warp upward.
The annular rib 30 is fitted into the concave groove 11 on the upper peripheral edge of the support column 10 and the fitting portion 31 of the support 25 is fitted into the concave groove 12 on the lower peripheral edge of the support column 10, so that Strength is improved,
Deformation of the column 4 is prevented.

Further, since the safety switch 21 is operated by the fixing member 35 for fixing the support 4 to the base 3, the power cord 16 is inserted into an outlet while the support 4 is removed from the base 3 and the power switch 16 is erroneously inserted. There is no electric shock even if one terminal 23 is touched.

[0024]

According to the first aspect of the present invention, the workability of assembling the column and the base can be improved with a simple configuration, and the first terminal and the second terminal can be securely connected. Thus, it is possible to prevent the terminal from being damaged.

According to the configuration of the second aspect of the present invention, the column supporting portion and the supporting portion can be firmly tightened with a simple configuration, and the column can be stably mounted on the base without shaking. Therefore, it is possible to prevent the terminals from being damaged by preventing excessive force from being applied to each terminal.

[Brief description of the drawings]

FIG. 1 is an enlarged sectional view of a main part in a state where a stand according to an embodiment of the present invention is assembled.

FIG. 2 is a sectional view of the main part.

FIG. 3 is a bottom view of the same.

FIG. 4 is an essential part cross-sectional view showing a state where the stand is disassembled.

FIG. 5 is a bottom view showing a state where the fixing member is removed.

FIG. 6 is a bottom view of the column.

FIG. 7 is a bottom view of a base of the base.

FIG. 8 is a bottom view of a screwed body of the column.

FIG. 9 is a side view of a screwed body of the column.

FIG. 10 is an enlarged sectional view of a main part of the stand in an assembled state viewed from another direction.

FIG. 11 is an enlarged cross-sectional view of a main part when the fixing member is removed and viewed from another direction.

FIG. 12 is an enlarged cross-sectional view of a main part of the base viewed from another direction.

FIG. 13 is a top view of the base.

FIG. 14 is an external perspective view of the electric fan.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 fan 2 stand 3 base 4 support 6 fan 7 guard 8 base 9 lid 10 support support 11 concave groove (engagement part) 12 concave groove (engagement part) 14 engagement groove 23 first terminal 24 rising piece 25 Supporting part 28 Screwed body 30 Annular rib (locking part) 31 Fitting part (locking part) 32 Second terminal 35 Fixing member

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) F16M 11/20-11/42 F04D 25/08 306

Claims (2)

(57) [Claims] 1. A base, and a base provided on the base.
Having an upper opening and a lower opening on the upper surface and the lower surface, respectively.
A column support, and a support inserted through an upper opening of the column support.
A pillar having a support supported by a peripheral wall of a pillar support
And provided below the support portion and opened below the support column portion.
A protrusion projecting downward from the lower surface of the base through the mouth;
A fixing member attached to the projecting portion projecting from the lower surface of the base and fixing the base and the support, a first terminal provided on the support support of the base, and a support provided on the support of the support;
A second terminal detachably connected to the first terminal, a fan head supported on the support and having an electric motor, a fan driven to rotate by the electric motor, and a guard body covering the fan. provided, provided with a plurality of projections projecting toward the inner post support portion to the post support opening edge of said base, characterized in that the recess Ru accept projecting portions provided on the supporting part of the strut fan. 2. A fixing device according to claim 2, wherein said projecting portion projects from the lower surface of said base.
With the fixed member attached, the fitting surface between the protrusion and the recess
The fixing member is brought into contact with the lower surface of the base located substantially below.
Fan according to claim 1, wherein the allowed.