JPH09178083A - Electric fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the accidents of electric shocks while a base and a strut are placed away from each other by providing a safety switch operated by the fixing of the base and the strut by a fixing member for conducting electricity to a first terminal and shutting off electric conduction by the disconnection of the fixing member. SOLUTION: A safety switch 21 is operated by fixing a strut 4 to a base and engaging a fixing member 35 in the supporting part of the strut 4 and by the fixing member 35. In other words, the switch is not operated unless the base and the strut 4 are surely fixed. Thus, the occurrence of electric shocks is prevented when the strut 4 is removed from the base while an electric wire 16 is kept inserted into a plug and a first terminal is touched by mistake, the erroneous use of the unstable strut 4 not fixed by the fixing member 35 is prevented and thus safety is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a fan in which a stand can be separated into a base and a support.

[0002]

2. Description of the Related Art Conventionally, as a fan capable of separating a stand into a base and a support, for example, Japanese Utility Model Publication No. 57-58478 (F.
16M 11/20) etc. are known. This fan is provided with a pillar support part on the upper surface of the base and a support part at the bottom of the pillar is inserted into the pillar support part, and a screw is inserted into the screw hole of the pillar from the back side of the base through the hole formed on the back surface of the base. The base and the support pillar are integrated by screwing together, and in the state where the base and the support pillar are integrated, the first terminal provided on the base and the second terminal provided on the support pillar are connected. Is configured to power the electric motor.

However, when the power line provided on the base is connected to the outlet, a current flows to the first terminal. Therefore, the power line is connected to the outlet by mistake with the support pillar separated from the base. When you touch the terminal 1
There was a risk of electric shock.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above drawbacks, and an object of the present invention is to provide a fan capable of preventing an electric shock accident in a state where a base and a support are separated from each other.

[0005]

According to the present invention, a base having a supporting column, a supporting column which is provided at a lower portion of the supporting column of the base is supported, and the base is fixed to the supporting column. A fixing member, a fan head having an electric motor supported by the support, a fan rotationally driven by the electric motor, a guard body that covers the fan, a first terminal provided on the base, and the support. Is provided and electrically connected to the electric motor.
A second terminal removably connected to the terminal, which is operated by fixing the base and the support to the base by a fixing member to enable the first terminal to be energized, and by removing the fixing member. It is characterized in that a safety switch for cutting off the power supply to the first terminal is provided.

According to the present invention, a base having a column supporting portion,
A support pillar in which a support portion provided at a lower portion is supported by the support pillar portion of the base, a fixing member that is attached to the support portion of the support pillar from the lower surface side of the base, and fixes the base and the support pillar, and is supported by the support pillar. , A fan head having an electric motor, a fan rotatably driven by the electric motor, a guard body for covering the fan, a first terminal provided on the base, and an electric motor provided on the column and electrically connected to the electric motor And a second terminal detachably connected to the first terminal by mounting the supporting portion to the supporting pillar supporting portion, and is operated by mounting a fixing member to the supporting portion of the supporting pillar mounted on the base. A safety switch is provided, which enables the first terminal to be energized and shuts off the energization to the first terminal when the fixing member is detached from the supporting portion.

According to the present invention, a base having a pillar support portion,
A support, in which a support provided at a lower portion is inserted into a support support of the base, a support mounted on the support of the support protruding from the lower surface of the base, a fixing member for fixing the base and the support, and supported by the support, An electric fan head having an electric motor, a fan rotatably driven by the electric motor, a guard body covering the fan, a first terminal provided on the base, and an electric connection provided on the support column. And a second terminal detachably connected to the first terminal by mounting the support portion to the column support portion, the operation portion is mounted on the base with the operation portion protruding from the bottom surface of the base, and protrudes from the bottom surface of the base. A safety switch is provided, which is operated by the fixing member when the fixing member is attached to the supporting portion to enable energization to the first terminal, and which shuts off energization to the first terminal when the fixing member is detached from the supporting portion. And it features.

The operating portion of this safety switch is preferably located above the lower end of the base.

According to the present invention, a base having a column support portion,
A support pillar provided at a lower portion of the support pillar of the base is supported, a fixing member for fixing the base and the support pillar, a fan head having an electric motor supported by the support pillar, and the electric motor. A rotationally driven fan, a guard body covering the fan, a first terminal provided on the base, and a support provided on the support post and electrically connected to an electric motor.
A second terminal detachably connected to the first terminal by mounting the support portion to the support pillar portion; and a first member operated by the support pillar by fixing the base and the support pillar to the base by a fixing member. The present invention is characterized in that a safety switch is provided, which enables the terminals to be energized and shuts off the energization to the terminals of the base when the fixing member is detached from the supporting portion.

According to the present invention, a base having a column supporting portion,
A support pillar in which a support portion provided at a lower portion is supported by the support pillar portion of the base, a fixing member that is attached to the support portion of the support pillar from the lower surface side of the base, and fixes the base and the support pillar, and is supported by the support pillar. A fan head having an electric motor, a fan rotatably driven by the electric motor, a guard body covering the fan, a first terminal provided on the base, and an electric motor provided on the support post. A second terminal that is connected and that is detachably connected to the first terminal by mounting the supporting portion to the supporting pillar supporting portion, by mounting a fixing member to the supporting portion of the supporting pillar mounted on the base, It is characterized in that a safety switch is provided which allows the first terminal to be energized by being operated by and which shuts off the energization to the first terminal when the fixing member is detached from the supporting portion.

In this structure, it is desirable that the base is provided with an urging means for urging the supporting column in the direction in which the supporting section separates from the supporting section.

According to the present invention, a base having a column support portion,
A support pillar in which a support portion provided at a lower portion of the base support portion of the base is supported, a fixing member movably provided on the support pillar and fixed to the base to fix the base and the support pillar, and the support pillar A fan head having an electric motor, a fan rotatably driven by the electric motor, a guard body covering the fan, a first terminal provided on the base, and an electric motor provided on the column. And a second terminal that is detachably connected to the first terminal by mounting the supporting portion to the supporting pillar supporting portion, and is operated by fixing the base and the supporting pillar to the base with a fixing member. The first terminal can be energized, and the first member can be removed by removing the fixing member.
It is characterized by the provision of a safety switch that shuts off power to the terminals.

According to the present invention, a base having a column support portion,
A support pillar provided at a lower portion of the support pillar of the base is supported, a fixing member for fixing the base and the support pillar, a fan head having an electric motor supported by the support pillar, and the electric motor. A fan that is driven to rotate, a guard body that covers the fan, a first terminal that is provided on the base, and an electrically connected electric motor that is provided on the support post,
A second terminal that is detachably connected to the first terminal by mounting the support portion to the column support portion, and is operated by fixing the base and the column to the base with a fixing member to the first terminal. And a safety switch for disconnecting the pair of power supply lines to the first terminal when the fixing member is detached from the support portion.

According to the present invention, a base having a pillar support portion,
A support pillar in which a support portion provided at a lower portion is supported by the support pillar portion of the base, a fixing member that is attached to the support portion of the support pillar from the lower surface side of the base, and fixes the base and the support pillar, A fan head having an electric motor, a fan rotatably driven by the electric motor, a guard body for covering the fan, a first terminal provided on the base, and an electric motor provided on the support column. And a second terminal detachably connected to the first terminal by mounting the supporting portion to the supporting pillar supporting portion, and is operated by mounting a fixing member to the supporting portion of the supporting pillar mounted on the base. Is provided with a safety switch that allows the first terminal to be energized and disconnects the pair of power supply lines to the first terminal when the fixing member is detached from the supporting portion.

According to the present invention, a base having a pillar support portion,
A support, in which a support provided at a lower portion is inserted into a support support of the base, a support mounted on the support of the support protruding from the lower surface of the base, a fixing member for fixing the base and the support, and supported by the support, An electric fan head having an electric motor, a fan rotatably driven by the electric motor, a guard body covering the fan, a first terminal provided on the base, and an electric connection provided on the support column. And a second terminal detachably connected to the first terminal by mounting the support portion to the column support portion, the operation portion is mounted on the base with the operation portion protruding from the bottom surface of the base, and protrudes from the bottom surface of the base. A safety switch, which is operated by the fixing member when the fixing member is attached to the supporting portion, allows the first terminal to be energized, and disconnects the pair of power supply lines to the first terminal when the fixing member is detached from the supporting portion. Setting Characterized in that was.

According to the present invention, a base having a column support portion,
A support pillar provided at a lower portion of the support pillar of the base is supported, a fixing member for fixing the base and the support pillar, a fan head having an electric motor supported by the support pillar, and the electric motor. A rotationally driven fan, a guard body covering the fan, a first terminal provided on the base, and a support provided on the support post and electrically connected to an electric motor.
A second terminal detachably connected to the first terminal by mounting the support portion to the support pillar portion; and a first member operated by the support pillar by fixing the base and the support pillar to the base by a fixing member. The present invention is characterized in that a safety switch is provided which enables the terminals to be energized and shuts off a pair of power lines to the terminals of the base when the fixing member is detached from the supporting portion.

According to the present invention, a base having a column support portion,
A support pillar having a support portion provided at a lower end portion supported by the support pillar portion of the base, a fixing member movably provided on the support pillar and fixed to the base to fix the base and the support pillar, and the support pillar upper portion. And a fan head having an electric motor,
A fan rotatably driven by the electric motor, a guard body covering the fan, and a first terminal provided on the base,
A second terminal that is provided on the pillar and is electrically connected to the electric motor, and is detachably connected to the first terminal by mounting the supporting portion on the pillar supporting portion; It is characterized in that a safety switch is provided which is operated by fixing the support to enable the first terminal to be energized and which disconnects the pair of power supply lines to the first terminal by detaching the fixing member.

As a structure for shutting off the pair of power supply lines to the first terminal, it is desirable that the safety switch is composed of a single switch having a contact for each power supply line.

Further, a safety switch is provided for each power supply line, and a pair of safety switches are provided on the support post of the base.
It is desirable to dispose them at positions facing each other by 80 degrees.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below in detail based on a fan 1 shown in the drawings.

Reference numeral 2 is a stand of the fan 1, which includes 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 neckpiece (not shown) supported on the upper end of the slide pipe 5 so as to be raised. . A fan or the like having an electric blower is supported on the neck piece so as to be swingable right and left. Reference numeral 6 is a fan that is detachably attached to the electric motor, and 7 is a guard that is detachably attached to the head of the electric fan by covering the fan 6.

The base 3 is composed of a base 8 made of synthetic resin having an open lower surface, and a metallic lid 9 for closing the lower opening of the base 8. Reference numeral 10 denotes a pillar support portion formed at a substantially central portion of the base 3, and an annular groove 11 is formed on the periphery of the pillar support portion 10 on the upper surface of the base 3 and a substantially annular recess is formed on the lower edge of the pillar support portion 10. Groove 12 is formed. 13
Is a positioning protrusion that is formed to bulge in the vertical direction from the peripheral wall of the support column 10 toward the inside of the support column 10, and is fitted into a positioning recess 33 provided in a support section 25 of the support column 4 described later. The rotation of the column 4 with respect to the base 3 is stopped. Reference numeral 14 is an annular engagement groove formed at the lower end of the peripheral wall of the column supporting portion 10 of the base 8, which is an annular rising piece of the lid 9 described later.
24 is designed to fit.

Reference numeral 15 denotes a rib which is formed so as to hang down from the rear surface of the base 8 and which connects the peripheral wall of the base 8 and one of the positioning projections 13 to form a compartment 17 for accommodating the power supply line 16 and also to form the power supply line.
16 is supported via a bushing 18, and the rib 15 is formed from the positioning protrusion 13 so that the positioning protrusion 13
Are reinforced. 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. Numeral 21 is fixed to a boss (not shown) formed so as to hang down from the rear surface of the base 8, and the other positioning protrusion
A safety switch arranged on the cover 13 controls the operation portion 22 of the cover 9.
When the fixing member 35 is screwed into the supporting portion 25 of the support column 4 described below, the fixing member 35 is operated by the fixing member 35 to enable power supply to the first terminal 23. Since the operating portion 22 of the safety switch 21 is located above the lower end of the peripheral wall of the base 3 and above the lower end of the supporting portion 25 of the column 4, the base 3 is fixed to the floor with the fixing member 35 removed. The operation unit 22 is not operated even when placed on a surface or the like. Reference numeral 23 denotes a first terminal provided below the support column 10, and is supplied with power from the substrate 19.

Around the periphery of the opening forming the strut support portion 10 of the lid 9, a substantially annular rising piece 24 is formed by burring toward the upper side, and the rising piece 24 is formed by 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, and a base portion 26 integrally formed with the support column 4, and a screwing portion fixed to the base portion 26 and to which a fixing member 35 described later is screwed.
And a threaded body 28 having 27. The support section
On the base portion 26 of 25, a collar portion 29 is formed on the upper portion of the support portion 25, and the collar portion
An annular rib 30 that fits into the recessed groove 11 on the upper surface of the base 8 is formed downward from 29, and the lower end of the base 26 of the support 25 is fitted into the recessed groove 12 at the lower peripheral edge of the column support 10. Mating part
31 are formed. Reference numeral 32 is a second terminal provided on the lower surface of the support portion 25, which is a first terminal provided at the lower end of the column support portion 10.
23 is detachably connected to supply power to the electric motor. 33 is a support for the supporting column 10 on the side surface of the base 26 of the supporting column 4.
The positioning recess is formed at a position facing the positioning projection 13 and the positioning projection 13 is fitted into the positioning recess 33 to support the support pillar 10 when the support 25 is inserted into the pillar support 10. The part 25 is positioned and the rotation of the support part 25 is restricted. 34 is an engaging claw formed in the positioning recess 33 of the screw body 28, the engaging claw 34 is engaged with the lower surface of the support column 10 in a state in which the support portion 25 is completely inserted into the support column 10, The column 4 is temporarily fixed to the base 3.

Reference numeral 35 denotes a ring-shaped fixing member made of a synthetic resin for fixing the support column 4 to the base 3. The fixing member 35 has a substantially U-shaped cross section having an outer peripheral wall, an inner peripheral wall and a bottom wall, and the inner peripheral wall inner surface. The threaded portion 36 formed on the base 3 is screwed into the threaded portion 27 of the column 4 to fix the column 4 to the base 3. The fixing member 35 substantially opposes the lower end of the peripheral wall of the support column 10 of the base 3 while being screwed into the screwing section 27 of the support column 4 and presses the operating section 22 of the safety switch 21. There is.
A plurality of reinforcing ribs that connect the outer peripheral wall and the inner peripheral wall are formed on the fixing member 35, and one of the reinforcing ribs is formed higher than the other reinforcing rib, and the reinforcing rib is attached to the threaded portion 27 of the column 4. In a screwed state, a high reinforcing rib is brought into contact with an extended rib (not shown) extending downward from the lower end of the column support portion 10 to prevent the fixing member 35 from being over-tightened.

Next, the circuit will be described with reference to FIG.
A control circuit 37 is connected to the first terminal 23 via a step-down circuit 38, and is supplied with power which has been stepped down to a predetermined voltage by the step-down circuit 38. Reference numeral 39 denotes an operation switch circuit having a switch (not shown) mounted on the substrate 19, and outputs an operation signal of the switch to the control circuit 37. Reference numeral 40 is a motor drive circuit that controls the electric motor 41 based on the signal from the control circuit 37, and 42 is a neck that controls a swing motor 43 that swings the fan head in the left-right direction based on the signal from the control circuit 37. It is a vibration motor drive circuit.

In the circuit of this embodiment, the safety switch
As shown in FIG. 15, 21 is constituted by a normally open switch provided on one side of the power supply line 16 from the plug 44 to the second terminal 32.

Next, a method of attaching the support column 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 13 is fitted, the support part 25 rotates and the terminals 23, 32
It will not be damaged by the force applied to it.

The support portion 25 of the column 4 is the column 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 support 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 support column 4. By screwing the fixing member 35, the operating portion 22 of the safety switch 21 is pressed against the fixing member 35, and the terminal
The electric power can be supplied to the electric motor through 23 and 32, and the assembly of the base 3 and the support column 4 is completed.

Since the fixing member 35 is screwed in a position facing the peripheral wall of the support column 10 and the wall surface of the support unit 25, the support unit 10 and the support unit 25 can be firmly tightened, and the support column 4 is fixed. It can be mounted on the base 3 in a stable state without wobbling. Further, since the fixing member 35 is screwed onto the outer periphery of the supporting portion 25, as compared with the conventional configuration in which the screw of the fixing member is screwed from the lower surface side of the base through the through hole formed in the supporting column supporting portion, The area of the screwed portion between 25 and the fixing member 35 is increased, the supporting strength of the support column 4 can be increased, and the support column 4 can be stably supported by the base.

Further, the annular rib 30 on the upper part of the support part 25 fits into the concave groove 11 on the peripheral edge of the upper part of the support column 10, and the fitting part 31 on the lower part of the support part 25 fits into the concave groove 12 on the peripheral part of the lower part of the column support part 10. The fixing member 35 is not screwed into
Even if an external force is applied to the column 4 in the lateral direction with the 35 not completely tightened, the annular rib 30 and the concave groove
11 and the fitting between the fitting portion 31 and the concave groove 12
Is supported in a more stable state.

When the base 3 is stepped on by mistake,
Although the peripheral wall of the column support part 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 collar portion 29 of the support column 4 is accidentally stepped on, the collar portion 29 of the support column 4 tries to deform so as to warp upward. The fitting portion 31 of the support portion 25 is fitted into the concave groove 11 on the upper peripheral edge of the support portion 10
Fits into the recessed groove 12 at the lower peripheral edge of the support column 10, so that the strength of the lower part of the support column 4 is improved and deformation of the support column 4 is prevented.

Further, the safety switch 21 is operated by the fixing member 35 by mounting the supporting column 4 on the base 3 and screwing the fixing member 35 to the supporting portion 25 of the supporting column 4, so in other words, the base 3 Since it can be operated only when the support column 4 and the support column 4 are securely fixed, there is no electric shock even if the support column 4 is removed from the base 3 and the first terminal 23 is accidentally touched with the power line 16 plugged into the outlet. At the same time, it is possible to prevent erroneous use of the support column 4 in which the fixing member 35 is forgotten to be attached in an unstable state, and it is possible to prevent safety.

Further, since the operating portion 22 of the safety switch 21 is located above the lower end of the peripheral wall of the base 3, even if the base 3 is placed on the floor or the like with the fixing member 35 removed. Since the operation portion 22 of the safety switch 21 is not operated by the floor surface or the like, it is possible to reliably prevent an electric shock accident.

Although the safety switch 21 is provided only on one side of the power supply line 16 from the plug 44 to the first terminal 23 in the above-described embodiment, as shown in FIG. It may be provided on both power supply lines 16 leading to. Power line 16
In the case of a configuration in which only one side is cut off, if the user touches the contact point to which the other power supply line 16 is connected while being grounded, a leakage current may flow, and the first terminal 23 cannot be easily touched. Although it is necessary to have a configuration, in the present embodiment in which both power supply lines 16 are cut off, the configuration of the first terminal 23 portion for leakage current countermeasures can be simplified.

As a construction for shutting off both power supply lines 16, as shown in FIGS. 17 and 18, a two-contact safety switch 21 having a normally open contact is provided on both power supply lines 16 and operation of this safety switch 21 is performed. A configuration in which the portion 22 is operated by the fixing member 35 can be considered. With this configuration, both power supply lines 16 can be shut off by the single safety switch 21, and the configuration can be simplified.

Further, as shown in FIG. 19, safety switches 21 and 21 are provided on both power supply lines 16, respectively.
A configuration may be used in which the operation parts 22 and 22 of 21 are operated by the fixing member 35. In this configuration, the safety switches 21,
It is preferable to arrange them at a position facing each other by about 180 degrees. In the configuration in which two safety switches 21 and 21 are provided, the safety switches 21 and 21 are compared to the configuration in which one safety switch 21 is provided.
Due to the restoring force of the operating parts 22, 22,
Since a large force is applied in the direction away from the safety switch
If the configuration is such that 21 and 21 are arranged closer to one side of the pillar support portion 10, the restoring force of the operation portions 22 and 22 of the safety switches 21 and 21 acts in the direction of prying the fixing member 35, and the fixing member 35 There is a problem that the operability deteriorates, but the safety switches 21 and 21 are set to about 18
Safety switch 2
The restoring force of the operation portions 22 and 22 of 1 and 21 does not act on the fixing member 35 in a biased manner, and the operability of the fixing member 35 does not deteriorate.

Further, in the above-mentioned embodiment, the fixing member 35 is screwed and fixed to the supporting portion 25 of the support column 4, but as shown in FIGS. 20 to 22, the supporting portions 25 are substantially opposed to each other. A protrusion 45 having a substantially cylindrical side surface is formed, and a substantially L-shaped engagement groove 46 into which the protrusion 45 of the support portion 25 fits is formed on the inner surface of the fixing member 35.
May be formed. In this configuration, the fixing member
35 is moved in the axial direction of the support column 4 along the engagement groove 46 with the protrusion 45 fitted in the engagement groove 46, and the fixing member 35
Is fixed by rotating along the engagement groove 46 until the protrusion 46 rides over the engagement protrusion 47 formed at the end of the engagement groove 46. In this fixed state, the fixing member 35 presses the operating portion 22 of the safety switch 21 and the power can be supplied to the first terminal 23.

As shown in FIGS. 21 and 22, the engaging groove 46 is inclined so that its horizontal portion is closer to the base 3 toward the end, and the fixing member 35 is rotated to support the base 3 and the support pillar. It is desirable that 4 can be firmly fixed.

In this configuration, compared to the above-mentioned embodiment,
It is possible to reduce the rotating operation at the time of attaching and detaching the fixing member 35, and improve the attaching and detaching operability.

Further, the support portion 25 and the fixing member 35 of the support column 3 may have the structure shown in FIGS. 23 to 25. That is, the concave groove 48 is formed on the opposite side surfaces of the support portion 25, the fixing member 35 is formed in an elliptical shape, and the fixing member 35 is formed on the inner side surface thereof.
The engaging rib 49 may be formed so as to be inserted and fitted into the groove 48 along the longitudinal direction thereof.

In this structure, as shown in FIGS. 23 and 25, the support portion 25 is inserted into one end of the fixing member 35 on which the engaging rib 49 is not formed, and the fixing member 35 is moved in the arrow direction in FIG. Then, as shown in FIG. 24, the engaging rib 49 is formed into the concave groove 48.
To fit. The engaging rib 49 gradually inclines toward the base 3 toward the tip side, and the concave groove 48 gradually inclines toward the base 3 in the inserting direction of the engaging rib 49. Fixing member 35
By the sliding of, the fixing member 35 tightly fixes the base 3 and the column 4 to each other. The protrusion 50 is formed in the groove 48 and the engaging rib 49
In addition, since the concave portion 51 that engages with the protrusion 50 is formed with the engaging rib 49 fitted in the concave groove 48, the fixing member 35 does not fall off.

With the fixing member 35 attached, FIG.
As shown in, the fixing member 35 operates the safety switch 21,
It is possible to energize the first terminal 23.

In each of the above-mentioned embodiments, the supporting portion 25 of the support column 4 is used.
26, the base 3 and the support column 4 are integrated by projecting the base 3 from the support column 10 of the base 3 to the lower surface side and fixing the fixing member 35 to the support section 25 protruding from the lower surface of the base 3.
Also, as in the embodiment shown in FIG. 27, a fixing member 53 made of a screw is inserted through a through hole 52 formed in the bottom surface of the support pillar 10 and the fixing member 53 is screwed onto the bottom surface of the support portion 25 to support the pillar 4. The base 3 is fixed by the fixing member 53.
Alternatively, the safety switch 21 may be pressed by the fixing member 53 in a state where the column 4 is fixed.

Further, in the above-mentioned respective embodiments, the safety switch 21 is operated by the fixing members 35 and 53, but as shown in FIGS. 28 and 29, the safety switch 21 is operated.
Is disposed at a position where the operating portion 22 is operated by the support column 4, and the support column 10 is attached to the bottom surface of the support column 10 of the base 3.
The safety switch 21 is not operated by the support column 4 when the support portion 25 of the support column 4 is merely inserted into the support column 4, and the safety switch 21 is operated by the support column 4 with the fixing member 53 screwed onto the support portion 25.
An elastic body 54 for urging the support column 4 upward so as to operate the column 21 may be provided, and the safety switch 21 may be operated by the support column 4.

In each of the above-mentioned embodiments, the fixing members 35 and 53 are mounted on the support column 4 from the lower surface side of the base 3, but as shown in FIGS. 30 and 31, they may be mounted from the upper surface side of the base 3. Good.

This embodiment will be described with reference to FIGS. 30 and 31. Reference numeral 55 denotes a fixing member made of synthetic resin, which is an outer peripheral wall,
A flange 57 which is formed in a substantially U-shaped cross-section having an inner peripheral wall and a ceiling wall, forms a threaded portion 56 on the lower inner surface of the inner peripheral wall, and abuts the flange portion 29 of the column 4 inward from the inner peripheral wall. Is formed. Reference numeral 58 is an annular groove formed on the periphery of the base supporting portion 10 of the base, and is a screwing portion to which the screwing portion 56 of the fixing member 55 is screwed.
Has 59.

In this embodiment, the support portion 25 of the column 4 is inserted into the column support portion 10 of the base 3 and the fixing member 55 is screwed into the groove 58 of the base 3 to be fixed. In this state, as shown in FIG. 29, the collar portion 57 of the fixing member 55 abuts the collar portion 29 of the supporting column 4 to fix the supporting column 4 to the base 3 and the fixing member 55.
The outer peripheral wall presses the operating portion 22 of the safety switch 21 so that the terminal 23 can be energized.

Also in this embodiment, FIG. 16 to FIG.
As in the embodiment shown in FIG. 9, both power supply lines 16 may be cut off.

[0052]

As described above, according to the structure of claim 1 of the present invention, it is possible to prevent an electric shock accident in a state where the base and the support are separated from each other, and the base and the support are fixed by the fixing member. Since it is possible to energize only in the state, it is possible to prevent misuse in an unstable state where the base and the support are forgotten to be fixed, and it is possible to improve safety.

According to the second aspect of the present invention, it is possible to prevent an electric shock accident in a state where the base and the support are separated from each other, and it is possible to energize only when the base and the support are fixed by the fixing member. Therefore, it is possible to prevent erroneous use in an unstable state where the base and the pillar are forgotten to be fixed, and it is possible to improve safety. Also, since the fixing member is configured to be fixed to the support from the lower surface side of the base, the fixing member is not visible in the usage state, etc.
It has effects such as not impairing the appearance.

According to the structure of claim 3 of the present invention, it is possible to prevent an electric shock accident in a state where the base and the support are separated from each other, and to energize only when the base and the support are fixed by the fixing member. Therefore, it is possible to prevent erroneous use in an unstable state where the base and the pillar are forgotten to be fixed, and it is possible to improve safety. In addition, since the fixing member is fixed to the support portion of the column protruding from the lower surface of the base, the fixing member is not visible in use, the appearance is not deteriorated, and the column is supported more stably on the base. There is an effect such as being able to.

According to the structure of claim 4 of the present invention, when only the base is placed on the floor or the like, the safety switch is not operated by the floor or the like, and the electric shock is generated in the state where the base and the support are separated. This has the effect of preventing accidents.

According to the structure of claim 5 of the present invention, it is possible to prevent an electric shock accident in a state where the base and the support are separated from each other, and to energize only when the base and the support are fixed by the fixing member. Therefore, it is possible to prevent erroneous use in an unstable state where the base and the column are forgotten to be fixed, and it is possible to improve safety.

According to the structure of claim 6 of the present invention, it is possible to prevent an electric shock accident in a state where the base and the support are separated from each other, and to energize only when the base and the support are fixed by the fixing member. Therefore, it is possible to prevent erroneous use in an unstable state where the base and the pillar are forgotten to be fixed, and it is possible to improve safety. Also, since the fixing member is configured to be fixed to the support from the lower surface side of the base, the fixing member is not visible in the usage state, etc.
It has effects such as not impairing the appearance.

According to the configuration of claim 7 of the present invention, it is possible to more reliably prevent the support pillar from operating the safety switch with the fixing member removed, and it is possible to prevent the base and the support pillar from being fixed. It is possible to prevent misuse in a stable state and improve safety.

According to the structure of claim 8 of the present invention, it is possible to prevent an electric shock accident in a state where the base and the support are separated from each other, and to energize only when the base and the support are fixed by the fixing member. Therefore, it is possible to prevent erroneous use in an unstable state where the base and the column are forgotten to be fixed, and it is possible to improve safety.

According to the configuration of claim 9 of the present invention, it is possible to prevent an electric shock accident in a state where the base and the support are separated from each other, and to energize only when the base and the support are fixed by the fixing member. Therefore, it is possible to prevent erroneous use in an unstable state where the base and the pillar are forgotten to be fixed, and it is possible to improve safety. Also, since the safety switch shuts off the pair of power lines to the first terminal,
It is possible to reliably prevent a leakage current when the base and the support are separated.

According to the structure of claim 10 of the present invention, it is possible to prevent an electric shock accident in a state where the base and the support are separated from each other, and to energize only when the base and the support are fixed by the fixing member. Therefore, it is possible to prevent erroneous use in an unstable state where the base and the pillar are forgotten to be fixed, and it is possible to improve safety. Further, since the safety switch cuts off the pair of power supply lines to the first terminal, it is possible to reliably prevent the leakage current when the base and the support are separated. Further, since the fixing member is configured to be fixed to the column from the lower surface side of the base, there is an effect that the fixing member is not visible in the use state and the appearance is not spoiled.

According to the eleventh aspect of the present invention, it is possible to prevent an electric shock accident in a state where the base and the support are separated from each other, and to energize only when the base and the support are fixed by the fixing member. Therefore, it is possible to prevent erroneous use in an unstable state where the base and the pillar are forgotten to be fixed, and it is possible to improve safety. Further, since the safety switch cuts off the pair of power supply lines to the first terminal, it is possible to reliably prevent the leakage current when the base and the support are separated. Further, since the fixing member is configured to be fixed to the support portion of the column protruding from the lower surface of the base, the fixing member is not visible in the use state, the appearance is not damaged, and the column is supported more stably on the base. There are effects such as being able to.

According to the twelfth aspect of the present invention, it is possible to prevent an electric shock accident in a state where the base and the support are separated from each other, and to energize only when the base and the support are fixed by the fixing member. Therefore, it is possible to prevent erroneous use in an unstable state where the base and the pillar are forgotten to be fixed, and it is possible to improve safety. Further, since the safety switch cuts off the pair of power supply lines to the first terminal, it is possible to reliably prevent a leakage current when the base and the support are separated.

According to the thirteenth aspect of the present invention, it is possible to prevent an electric shock accident in a state where the base and the support are separated from each other, and to energize only when the base and the support are fixed by the fixing member. Therefore, it is possible to prevent erroneous use in an unstable state where the base and the pillar are forgotten to be fixed, and it is possible to improve safety. Further, since the safety switch cuts off the pair of power supply lines to the first terminal, it is possible to reliably prevent a leakage current when the base and the support are separated.

According to the structure of claim 14 of the present invention, with a simple structure, it is possible to reliably prevent a leakage current in a state where the base and the support are separated.

According to the fifteenth aspect of the present invention, there is an effect that the leakage current can be surely prevented in a state where the base and the support are separated without deteriorating the attachment / detachment operability of the rotating member. Play.

[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 an enlarged cross-sectional view of a main part with the fixing member removed.

FIG. 3 is an enlarged cross-sectional view of a main part of the base of the base.

FIG. 4 is a bottom view of the threaded body of the column.

FIG. 5 is a side view of a threaded body of the column.

FIG. 6 is an enlarged cross-sectional view of a main part of the stand in an assembled state.

FIG. 7 is an enlarged cross-sectional view of a state in which the stand is assembled.

FIG. 8 is a bottom view of the stand in an assembled state.

FIG. 9 is an enlarged cross-sectional view showing a disassembled state of the stand.

FIG. 10 is a bottom view of the stand showing a state where the fixing member is removed.

FIG. 11 is a bottom view of the column.

FIG. 12 is a bottom view of the base of the base.

FIG. 13 is a top view of the base.

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

FIG. 15 is a circuit diagram of the same.

FIG. 16 is a circuit diagram showing another embodiment of the present invention.

FIG. 17 is an enlarged cross-sectional view of an essential part showing an embodiment forming the same circuit.

FIG. 18 is a bottom view of the base of the base.

FIG. 19 is a bottom view of the base of the base showing the other embodiment.

FIG. 20 is an enlarged sectional view of an essential part showing another embodiment of the present invention.

FIG. 21 is an enlarged sectional view of an essential part showing a state in which the fixing member is removed.

FIG. 22 is an enlarged sectional view of an essential part showing a state where the fixing member is attached.

FIG. 23 is an enlarged bottom view of the essential parts of another embodiment of the present invention.

FIG. 24 is a cross-sectional view taken along the line AA of FIG. 23, showing a state in which the fixing member is attached.

FIG. 25 is a cross-sectional view taken along the line AA of FIG. 23, showing a state in which the fixing member is removed.

FIG. 26 is an enlarged sectional view of an essential part showing a state in which a fixing member according to another embodiment of the present invention is attached.

FIG. 27 is an enlarged sectional view of an essential part showing a state where the fixing member is removed.

FIG. 28 is an enlarged sectional view of an essential part showing a state in which a fixing member according to another embodiment of the present invention is attached.

FIG. 29 is an enlarged sectional view of an essential part showing a state where the fixing member is removed.

FIG. 30 is an enlarged sectional view of an essential part showing a state in which a fixing member according to another embodiment of the present invention is attached.

FIG. 31 is an enlarged sectional view of an essential part showing a state in which the fixing member is removed.

[Explanation of symbols]

 1 Fan 2 Stand 3 Base 4 Post 10 Post support 19 Board 21 Safety switch 22 Operation part 23 Terminal 25 Support part 32 Terminal 35 Fixing member 53 Fixing member 54 Elastic body 55 Fixing member

Claims (15)

[Claims] 1. A base having a supporting column, a supporting column supporting a supporting section provided at a lower portion of the supporting column of the base, a fixing member for fixing the base and the supporting column, and a supporting unit for supporting the supporting column. And a fan head having an electric motor, a fan rotatably driven by the electric motor, a guard body for covering the fan, a first terminal provided on the base, and an electric motor provided on the support post. A second terminal that is connected to and detachably connected to the first terminal by mounting the support portion to the support pillar, and is operated by fixing the base and the support pillar to the base with a fixing member. It is possible to energize one terminal and remove the fixing member to
An electric fan, which is equipped with a safety switch that shuts off power to the terminals. 2. A base having a supporting column, a supporting column supporting a supporting unit provided at a lower portion of the supporting column of the base, and a supporting unit mounted on the supporting unit of the supporting column from a lower surface side of the base.
A fixing member that fixes the base and the support, a fan head that is supported by the support and has an electric motor, a fan that is driven to rotate by the electric motor, and a guard body that covers the fan.
A first terminal provided on the base, and a second terminal provided on the column and electrically connected to the electric motor and detachably connected to the first terminal by mounting the support portion on the column support portion. The base is operated by attaching a fixing member to a supporting portion of a support attached to the base to enable energization to the first terminal, and detaching the fixing member from the supporting portion energizes the first terminal. An electric fan that is equipped with a safety switch that shuts off the power. 3. A base having a column support, a column into which a support provided at a lower portion of the column support is inserted, and a column supporting the column protruding from the lower surface of the base. A fixing member for fixing the fan, a fan head having an electric motor supported by the column, a fan rotationally driven by the electric motor, a guard body covering the fan, and a first terminal provided on the base. A second electrically connected to the electric motor provided on the pillar, and detachably connected to the first terminal by mounting the supporting portion on the pillar supporting portion
A terminal, the operating portion is mounted on the base so as to project from the lower surface of the base, and the fixing member is mounted on the supporting portion projecting from the lower surface of the base so that the first terminal can be energized. An electric fan provided with a safety switch for cutting off the power supply to the first terminal when the fixing member is detached from the supporting portion. 4. The electric fan according to claim 2, wherein the operating portion of the safety switch is located above the lower end of the base. 5. A base having a supporting column, a supporting column supporting a supporting section provided at a lower portion of the supporting column of the base, a fixing member for fixing the base and the supporting column, and a supporting structure for the supporting column. And a fan head having an electric motor, a fan rotatably driven by the electric motor, a guard body covering the fan, a first terminal provided on the base, and an electric motor provided on the support post. And a second terminal that is detachably connected to the first terminal by mounting the supporting portion to the strut supporting portion, and is operated by the strut by fixing the base and the strut to the base with a fixing member. A fan provided with a safety switch that enables the first terminal to be energized and shuts off the energization to the terminal of the base by detaching the fixing member from the supporting portion. 6. A base having a pillar support portion, a pillar on which a support portion provided at a lower portion of the pillar support portion of the base is supported, and a support portion attached to the pillar support portion from a lower surface side of the base,
A fixing member for fixing the base and the support, a fan head supported by the support and having an electric motor, a fan rotationally driven by the electric motor, and a guard body covering the fan,
A first terminal provided on the base and an electric motor provided on the support, and detachably connected to the first terminal by mounting the support of the support on the support of the base. Two terminals are provided, and by attaching the fixing member to the support portion of the support column attached to the base, the first terminal can be energized by being operated by the support column, and the fixing member is detached from the support portion. An electric fan provided with a safety switch for cutting off power to the first terminal. 7. The electric fan according to claim 5, wherein the base is provided with an urging means for urging the support column in a direction in which the support section separates from the support section. 8. A base having a pillar support, a pillar on which a support provided at a lower portion of the pillar support is supported, and a base movably mounted on the pillar and fixed to the base. A fixing member for fixing the support, a fan head supported by the support and having an electric motor, a fan rotatably driven by the electric motor, a guard body covering the fan, and a first member provided on the base. A second terminal, which is provided on the pillar and electrically connected to the electric motor, and which is detachably connected to the first terminal by mounting the supporting portion on the pillar supporting portion.
A safety that includes a terminal and is operated by fixing the base and the support to the base by a fixing member to enable the energization to the first terminal, and disconnects the energization to the first terminal by detaching the fixing member. An electric fan characterized by having a switch. 9. A base having a supporting column, a supporting column supporting a supporting section provided at a lower portion of the supporting column of the base, a fixing member for fixing the base and the supporting column, and a supporting unit for the supporting column. And a fan head having an electric motor, a fan rotatably driven by the electric motor, a guard body for covering the fan, a first terminal provided on the base, and an electric motor provided on the support post. A second terminal that is connected to and detachably connected to the first terminal by mounting the support portion to the support pillar, and is operated by fixing the base and the support pillar to the base with a fixing member. An electric fan provided with a safety switch that enables electricity to be supplied to one terminal and that disconnects a pair of power supply lines to the first terminal when the fixing member is detached from the supporting portion. 10. A base having a supporting column, a supporting column which supports a supporting section provided at a lower portion of the supporting column of the base, and a base mounted on the supporting unit of the supporting column from the lower surface side of the base. A fixing member for fixing the fan, a fan head having an electric motor supported by the support, a fan rotatably driven by the electric motor, a guard body covering the fan, and a first terminal provided on the base. A second electrically connected to the electric motor provided on the pillar, and detachably connected to the first terminal by mounting the supporting portion on the pillar supporting portion
A first terminal, which is operated by mounting a fixing member to a supporting portion of a support mounted to the base to enable energization to the first terminal, and which is detached from the supporting portion of the fixing member. A fan provided with a safety switch for cutting off a pair of power lines to the fan. 11. A base having a column support, a column into which a support provided at a lower part of the column support is inserted, and a column supporting the column protruding from the lower surface of the base. A fixing member for fixing the fan, a fan head having an electric motor supported by the column, a fan rotationally driven by the electric motor, a guard body covering the fan, and a first terminal provided on the base. A second electrically connected to the electric motor provided on the pillar, and detachably connected to the first terminal by mounting the supporting portion on the pillar supporting portion
A terminal, the operating portion is mounted on the base so as to project from the lower surface of the base, and the fixing member is mounted on the supporting portion projecting from the lower surface of the base so that the first terminal can be energized. A fan provided with a safety switch for disconnecting the pair of power supply lines to the first terminal when the fixing member is detached from the supporting portion. 12. A base having a pillar support portion, a pillar supporting a support portion provided at a lower portion of the pillar support portion of the base, a fixing member for fixing the base and the pillar, and a support member for the pillar. A fan head having an electric motor, a fan rotatably driven by the electric motor, a guard body covering the fan, a first terminal provided on the base, and an electric motor provided on the column And a second terminal that is detachably connected to the first terminal when the support part is attached to the support part, and is operated by the support by fixing the base and the support to the base with a fixing member. A fan is provided with a safety switch that allows electricity to be applied to the first terminal and that disconnects a pair of power lines to the terminal of the base when the fixing member is detached from the support portion. 13. A base having a column support, a column supported by a support provided at a lower end of the column support of the base, a column movably provided on the column and fixed to the base. And a support member for fixing the support and the support, a fan head having an electric motor supported above the support, a fan rotatably driven by the drive motor, a guard body covering the fan, and a base provided on the base. The base is provided with a first terminal and a second terminal that is provided on the pillar and is electrically connected to the electric motor, and is detachably connected to the first terminal by mounting the support portion to the pillar support portion. The first member is operated by fixing the base and the support by the fixing member, and the first terminal is energized.
An electric fan provided with a safety switch for cutting off a pair of power lines to terminals. 14. The fan according to claim 9, wherein the safety switch is composed of a single switch having a contact point for each power supply line. 15. The safety switch is provided on each of the power supply lines, and the safety switch is arranged at a position facing approximately 180 degrees of the support portion of the base. The fan according to item 13.