JP2012202343A - Electric fan - Google Patents

Abstract

PROBLEM TO BE SOLVED: To safely function a toppling preventive tool at the angle of elevation when the toppling risk is high so that an electric fan head can be turned at the angle of elevation of 90° without any toppling of the electric fan while the excellent appearance of the entire electric fan is maintained.SOLUTION: An electric fan includes an elevation angle locking/unlocking device 5 for holding the turn of a head 1 within the predetermined angle and for releasing the holding of the turn, a toppling preventer 4 for preventing any toppling of the electric fan, a toppling preventive movable locking/unlocking device 6 for holding the toppling preventer 4 to the predetermined position and releasing the holding, and a control circuit 7 for controlling these devices. The toppling preventer 4 is safely functioned as necessary while the head 1, the elevation angle locking/unlocking device 5, the toppling preventer 4, the toppling preventive movable locking/unlocking device 6, and the control circuit 7 are related to each other.

Description

The present invention relates to an electric fan that can safely make an elevation angle of a head portion of an electric fan 90 degrees without falling by a fall prevention function.

Conventionally, a large amount of electric fans in circulation cannot make the elevation angle of the head part 90 degrees. Although there is a proposal to set the elevation angle of the head part to 90 degrees, there is a high possibility that the head part will fall due to the deviation of the head part weight. (See Patent Document 1, Patent Document 2, and Patent Document 3)
There has also been proposed a tipping prevention device that can be removed from or stored in a base portion that supports the head portion and the column portion of the electric fan. (See Patent Document 4 and Patent Document 5)
From the above, it is desirable that the fan head unit elevation angle and the overturn prevention tool work safely.

No. 03-43435 Japanese Patent Laid-Open No. 07-155104 JP 07-158597 A JP 2002-5081 A JP 2007-316501 A

It is known that the combined use of a fan during heating in a general living room has a high energy saving effect. In particular, it is effective to blow the wind of the electric fan directly above, but a general electric fan head cannot make the elevation angle 90 degrees. The method of using the electric fan while lying on its back is not good because it takes a place.

Further, in order to make the electric fan head portion rotatable at an elevation angle of 90 degrees, it is necessary to increase the base portion bottom area. Also, when used in summer, the elevation angle is close to 0 degrees, and the large base is unnatural in design.

The object of the present invention is to maintain a good appearance of the entire fan, and to make the fan head portion turnable to an elevation angle of 90 degrees without causing the fan to fall. It is to make the fall prevention device function safely.

In order to achieve the above object, the electric fan according to claim 1 is an elevation angle rotation lock / unlock device 5 for holding and releasing rotation of the head portion 1 within a predetermined angle, and an overturn for preventing the electric fan from overturning. It comprises a prevention tool 4 and a fall-preventing movable lock / unlock device 6 that holds and releases the fall-prevention tool 4 in a predetermined position, and according to claim 2, the device 5 and the fall-prevention tool 4 And the device 6 and a control circuit 7 for controlling them.

And, since the fall prevention tool 4 functions safely when necessary, in claim 1, the head part 1, the elevation rotation lock / unlock device 5, the previous fall prevention tool 4 and the fall prevention are provided. The movable lock / unlock device 6 operates in an interrelated manner. In claim 2, the head unit 1, the device 5, the anti-tip device 4, the device 6, and the control circuit 7 operate while being associated with each other.

During normal use in summer, the head portion 1 is within the predetermined elevation angle, the first-elevation angle rotation lock / unlock device 5 is in a locked state, and the fall prevention device 4 is housed to prevent the fall. The movable lock / unlock device 6 is in the unlocked state.

In the case of claim 1, in order to set the elevation angle to 90 degrees, when the fall prevention tool 4 is installed at the predetermined position, the fall prevention movable lock / unlock device 6 is in the locked state and the elevation angle rotation lock / The unlocking device 5 is in an unlocked state, and the head portion can be rotated up to an elevation angle of 90 degrees.

In the case of claim 1, in order to store the fall prevention tool 4, when the head portion is rotated within the predetermined angle, the fall prevention movable lock / unlock device 6 is unlocked, and the fall The prevention tool 4 can be stored, and the elevation angle rotation lock / unlock device 5 is locked simultaneously with the storage.

In the case of claim 2, in order to set the elevation angle to 90 degrees, when the fall prevention tool 4 is installed at the predetermined position, the control circuit 7 senses the installation and the fall prevention movable lock / unlock device 6. And the elevation angle rotation lock / unlock device 5 are set to the unlocked state. The head unit 1 can be rotated up to an elevation angle of 90 degrees.

In the case of claim 2, when the head portion 1 is rotated within the predetermined angle and the elevation angle rotation lock / unlock device 5 is locked, the control circuit 7 senses the lock state and prevents the fall. The movable lock / unlock device 6 is set to the unlocked state. And the fall prevention tool 4 becomes movable.

According to the present invention, when the head unit 1 is within the predetermined angle, it can be safely used as a normal electric fan, and when the head unit 1 exceeds the predetermined angle, the overturn prevention tool is always installed at the predetermined position, Safety against falling can be secured.

The first aspect of the present invention can be used in a form in which the support portion of the electric fan does not expand and contract. The second aspect of the present invention can also be used for a type in which a support portion of an electric fan extends and contracts.

The figure which looked at the state where the head 1 of Example 1 of this invention is an elevation angle of 90 degree | times from the front and upper left diagonal. The figure which looked at the state at the time of the normal use of the head 1 of Example 1 of this invention from the front and upper left slant. The figure which removed half the fan main body cover which looked at the state at the time of normal use of the head 1 of Example 1 of this invention from the back and upper right diagonal. The figure which removed the fan, fan guard, and main body cover which looked at the state of the head of Example 1 of this invention 90 degree of elevation from the front and upper left diagonal. When the head according to the first embodiment of the present invention has an elevation angle of 90 degrees, the main shaft portion 2a, the elevation angle rotation interlocking cam 5a, and the elevation angle rotation interlocking shaft 5b are shown in detail. The flow until the head 1 according to the first embodiment of the present invention changes from within a normal predetermined elevation angle to an elevation angle of 90 degrees and returns again within the predetermined elevation angle. The figure which looked at the state at the time of normal use of the head 1 of Example 2 of this invention from the front and the upper right diagonal. The figure which looked at the state where the head 1 of Example 2 of this invention is an elevation angle of 90 degree | times from the front and diagonally upper right. The figure which remove | eliminated half the fan 1a, the guard 1c, and the main body cover which looked at the state at the time of normal use of the head 1 of Example 2 of this invention from the back and upper left diagonal. The figure which remove | eliminated half the fan 1a, the guard 1c, and the main body cover which looked at the state where the head 1 of Example 2 of this invention is an elevation angle 90 degree | times from the back and upper left diagonal. The detailed exploded view 1 which looked at the state in which the fall prevention tool 4 of Example 2 of this invention was accommodated from the front and diagonally lower left. The detailed exploded view 2 which looked at the state by which the fall prevention tool 4 of Example 2 of this invention was pulled out from the back and diagonally lower right. The flow until the head 1 according to the second embodiment of the present invention changes from the normal predetermined elevation angle to the elevation angle of 90 degrees and returns to the predetermined elevation angle again.

Embodiment 1 of the present invention will be described below with reference to the drawings. FIG. 2 shows a state during normal use of the electric fan. The base portion 3, the column portion 2 provided almost vertically on the base portion 3, and the head portion at the upper end of the column portion 2 are shown. 1.

As shown in FIGS. 1, 2, 3, and 4, the head unit 1 includes a fan motor 1a, a propeller-type fan 1b attached to the fan motor 1a, and a protective guard that covers the fan 1b. 1c, a neck piece 1d that supports the fan motor 1a, and a main shaft portion 2b to which the neck piece 1d is fixed.

As shown in FIGS. 1, 2, 3, 4, and 5, the neck holder 2a fixed to the upper end portion of the support column 2 is pivotally supported via a main shaft portion 2b to which a neck piece 1d is fixed. Thereby, the head 1 is rotatable in the vertical direction. An elevation rotation interlocking cam 5a is pivotally supported on a substantially outer flange portion of the main shaft surface.

The device group for safely setting the head portion 1 at an elevation angle of 90 degrees, which is a feature of the present invention, includes a fall prevention tool 4, an elevation rotation / lock / unlock device 5, and a fall prevention tool movable lock / unlock. It is comprised with the locking device 6, and the head part 1, the fall prevention tool 4, the apparatus 5, and the apparatus 6 are interlock | cooperating with each other.

As shown in FIGS. 3 and 4, the overturn prevention device 4 includes a guide roller 4 a for smoothly moving the overturn prevention device 4, and a front-rear two-way rotating wheel 4 b.

As shown in FIGS. 3 and 4, the elevation angle rotation lock / unlock device 5 includes an elevation angle rotation interlock cam 5a that controls the rotation of the head unit 1 and an elevation angle rotation interlocked with the elevation angle rotation interlock cam 5a. The interlocking shaft 5b and a one-way rotating wheel type stopper 5c that rotates when descending the slope 6a for braking the elevation rotation and does not rotate when ascending are configured.

As shown in FIGS. 3 and 4, the overturn prevention tool movable lock / unlock device 6 prevents the overturn prevention tool 4 from moving in the storage direction when the head unit 1 rotates beyond a predetermined elevation angle. Therefore, it comprises a slope 6a having a predetermined frictional resistance for receiving the one-way rotating wheel type stopper 5c.

In the normal use state, as shown in FIGS. 2 and 3, the overturn prevention device 4 is housed in the electric fan body, and the one-way rotating wheel type stopper 5c is at the highest position of the slope 6a, and the elevation angle rotation lock / unlock device 5 is. Thus, the head 1 rotates only within a predetermined elevation angle.

In order to set the head 1 to an elevation angle of 90 degrees from the normal use state, as shown in FIGS. 1 and 4, when the tipping prevention device 4 is pulled out from the stored state to the rear of the fan, the one-way rotating wheel type stopper 5c is Apart from the slope 6a, the elevation angle rotation lock / unlock device 5 is unlocked. Alternatively, the one-way rotating wheel type stopper 5c goes down the slope 6a.

As shown in FIG. 4, when the fall prevention tool 4 is installed at a predetermined position and the head 1 is rotated to an elevation angle of 90 degrees, the one-way rotating wheel type stopper 5c is grounded to the lowest part of the slope 6a and the device 6 is locked. Thus, the fall prevention tool 4 is safely held at a predetermined position.

In order to make the head 1 within a normal predetermined elevation angle, when the head 1 is rotated within the predetermined elevation angle, the one-way rotating wheel type stopper 5c is separated from the slope 6a, and the overturn prevention tool movable lock / unlock device 6 becomes an unlocked state and can store the fall prevention tool 4.

When the overturn prevention tool 4 is housed, the one-way rotating wheel type stopper 5c is held above the highest part of the slope 6a, whereby the head part 1 can be rotated within a predetermined elevation angle.

FIG. 6 is a flow until the head 1 changes from within the normal predetermined elevation angle to the elevation angle of 90 degrees and returns to within the predetermined elevation angle again.

There is a certain relationship between the deviation of the center of gravity of the head 1 and the position where the tipping prevention tool 4 functions safely. By appropriately reflecting the certain relationship on the slope of the slope 6a, even if the head 1 is in an arbitrary position between a predetermined elevation angle and less than 90 degrees, the one-way rotating wheel type stopper 5c However, it stops in the appropriate position of the slope 6a, and the fall prevention tool 4 can be functioned appropriately.

Embodiment 2 of the present invention will be described below with reference to the drawings. FIG. 7 shows a state during normal use of the electric fan. The base portion 3, the column portion 2 provided substantially vertically on the base portion 3, and the head portion at the upper end portion of the column portion 2. 1.

As shown in FIGS. 7, 8, 9, and 10, the head unit 1 includes a fan motor 1a, a propeller-type fan 1b attached to the fan motor 1a, and a protective guard that covers the fan 1b. 1c, a neck piece 1d that supports the fan motor 1a, and an elevation angle rotation stopper receiver 1e.

As shown in FIGS. 7, 8, 9, and 10, the neck piece 1d of the head portion 1 and the neck holder 2a attached to the upper end portion of the column portion 2 are rotated up and down via the main shaft portion 2b. It is pivotally supported.

A device group for safely setting the head portion 1 to an elevation angle of 90 degrees, which is a feature of the present invention, includes an overturn prevention tool 4, an elevation angle rotation stopper 5d fixed to the neck holder 2a and incorporating a circuit, and an overturn. The prevention device movable lock / unlock device 6 and a control circuit 7 are included. The head unit 1, the overturn prevention tool 4, the elevation angle rotation stopper 5 d, and the overturn prevention tool movable lock / unlock device 6 are interlocked with each other by a control circuit 7.

As shown in FIGS. 9 and 10, the overturn prevention device 4 is smoothly moved by the guide roller 4a and the front-rear two-way rotating wheel 4b.

As shown in FIGS. 7 and 9, the head portion 1 is prevented from turning more than a predetermined elevation angle by the elevation angle rotation stopper 5 d and the elevation angle rotation stopper receiver 1 e. The built-in circuit of the elevation angle rotation stopper 5d transmits an electrical signal related to the locked / unlocked state of the elevation angle rotation stopper 5d to the control circuit 7 and receives an electrical signal from the control circuit 7.

As shown in FIGS. 9, 10, 11, and 12, the fall prevention tool movable lock / unlock device 6 prevents the fall prevention tool 4 installed at a predetermined position from moving in the storage direction. The fall prevention tool stopper 6b and a predetermined position detection sensor 6c that senses that the fall prevention tool 4 is disposed at a predetermined position and is separated from the predetermined position and transmits an electric signal to the control circuit 7 are configured. Yes.

The overturn prevention tool stopper 6b incorporates a circuit that receives an electric signal from the control circuit 7 and controls locking / unlocking.

In a normal use state, the head 1 rotates only within a predetermined elevation angle by the elevation angle rotation stopper 5d and the elevation angle rotation stopper receiver 1e.

As shown in FIGS. 9, 10, 11, and 12, in order to bring the head 1 to an elevation angle of 90 degrees from the normal use state, the overturn prevention device 4 is pulled out from the stored state to the rear of the fan and put into a predetermined position. When installed, the predetermined position detection sensor 6 c detects the installation and transmits an electrical signal to the control circuit 7.

Then, the control circuit 7 that has received the electrical signal from the predetermined position detection sensor 6c transmits an electrical signal to the fall prevention tool stopper 6b, and the fall prevention tool stopper 6b receives the signal and enters a locked state. Is held in place.

At the same time as described above, the control circuit 7 that has received an electrical signal from the predetermined position sensor 6c transmits an electrical signal to the elevation angle rotation stopper 5d, the elevation angle rotation stopper 5d is unlocked, and the head 1 has an elevation angle of 90 degrees. Can be turned up to.

In order to make the head 1 rotatable within a normal predetermined elevation angle, the head 1 is rotated within a predetermined elevation angle and the elevation angle rotation stopper 5d is locked. It rotates only within the elevation angle. At the same time, an electrical signal is transmitted from the elevation rotation stopper 5d to the control circuit 7.

And the control circuit 7 which received the electrical signal from the elevation angle rotation stopper 5d transmits an electrical signal to the fall prevention tool stopper 6b. The fall prevention tool stopper 6b that has received the electrical signal is unlocked, and the fall prevention tool 4 can be stored.

FIG. 11 is a flow until the head 1 changes from within a predetermined elevation angle to an elevation angle of 90 degrees and returns again within the predetermined elevation angle.

The number of stages in which the elevation angle rotation stopper 5d locks the head 1 is increased, and the number of installation of the fall prevention tool stopper 6b and the predetermined position detection sensor 6c is increased. By appropriately controlling the predetermined position sensing sensor 6c, the head 1 can be safely held at any position between a predetermined elevation angle and less than 90 degrees.

DESCRIPTION OF SYMBOLS 1 Head part 1a Fan motor 1b Fan 1c Guard 1d Neckpiece 1e Elevation angle rotation stopper receiver 2 Support | pillar part 2a Neck holder 2b Main shaft part 2c Support | pillar 3 Base part 4 Fall prevention tool 4a Guide roller 4b fixed to the outer case Direction rotating wheel 5 Elevation angle rotation locking / unlocking device 5a Elevation angle rotation interlocking cam 5b Elevation angle rotation interlocking shaft 5c Descending one-way rotation wheel type stopper 5d that interlocks the rotation of the elevation angle and the movement of the overturn prevention device Detects locking / unlocking Elevation angle rotation stopper 6 with built-in circuit to prevent falling over and movable locking / unlocking device 6a Slope 6b with predetermined frictional resistance of wheel-type stopper receiving down and rotating in one direction Falling prevention tool stopper 6c Predetermined position sensor 7 Control circuit 7a Signal cable

Claims (3)

A head unit including a fan motor, a fan, a guard, and a neck piece pivotally supported through a main shaft so as to be freely rotatable up and down;
A neck holder that pivotally supports the neck piece via the main shaft, and a column part that supports and stands up the head part via the neck holder;
A base portion that supports the column portion;
A fan composed of a fall prevention device, an elevation rotation lock / unlock device, and a fall prevention device movable lock / unlock device,
The overturn prevention device has a function of preventing the electric fan from overturning when the head part exceeds an elevation angle setting angle.
The elevation angle rotation lock / unlock device includes a lock function that holds the rotation of the head portion within the elevation angle setting angle and an unlock function that releases the hold,
The fall prevention tool movable lock / unlock device includes a lock function for holding the fall prevention tool in a fall prevention setting position and an unlock function for releasing the hold.
The head portion is within the elevation angle setting angle, and the elevation rotation lock / unlock device is in a locked state;
When the fall prevention tool is installed at the fall prevention setting position, the fall prevention tool movable lock / unlock device is in a locked state, the fall prevention tool is held at the fall prevention setting position, and the elevation angle rotation lock / The unlocking device is unlocked, and the holding of the state in which the head portion rotates within the elevation angle setting angle is released, and the head portion can rotate beyond the elevation angle setting angle,
When the head portion is rotated within the elevation angle setting angle and the elevation angle rotation lock / unlock device is locked, the fall prevention device movable lock / unlock device is unlocked and the fall prevention device of the fall prevention device The electric fan according to claim 1, wherein the holding to the fall prevention setting position is released, and the fall prevention tool is movable. A head unit including a fan motor, a fan, a guard, and a neck piece pivotally supported through a main shaft so as to be freely rotatable up and down;
A neck holder that pivotally supports the neck piece via the main shaft, and a column part that supports and stands up the head part via the neck holder;
A base portion that supports the column portion;
A fan comprising a fall prevention device, an elevation rotation lock / unlock device, a fall prevention device movable lock / unlock device and a control circuit for performing a predetermined control;
The overturn prevention device has a function of preventing the electric fan from overturning when the head part exceeds an elevation angle setting angle.
The elevation angle rotation lock / unlock device includes a lock function that holds the rotation of the head portion within the elevation angle setting angle and an unlock function that releases the hold,
The fall prevention tool movable lock / unlock device includes a lock function for holding the fall prevention tool in a fall prevention setting position and an unlock function for releasing the hold.
The control circuit has a function of sensing and controlling a state of the elevation rotation lock / unlock device and the overturn prevention device movable lock / unlock device,
The head portion is within the elevation angle setting angle, and the elevation rotation lock / unlock device is in a locked state;
When the fall prevention tool is installed at the fall prevention setting position and the control circuit senses the installation and transmits an electrical signal to the fall prevention tool movable lock / unlock device and the elevation rotation lock / unlock device,
The overturn prevention device movable lock / unlock device is in a locked state, the overturn prevention device is held in the overturn prevention setting position, and the elevation angle rotation lock / unlock device is in an unlock state, and the head portion is rotated. Holding within the elevation angle setting angle is released, and the head part can be rotated beyond the elevation angle setting angle,
The head portion is rotated within the elevation angle setting angle, and the elevation angle rotation lock / unlock device is locked, and the control circuit senses the lock state, and the overturn prevention device movable lock / unlock device is moved to When an electrical signal is transmitted,
The electric fan according to claim 1, wherein the overturn preventive device movable lock / unlock device is in an unlocked state, the holding of the overturn preventive device in the overturn preventive setting position is released, and the overturn preventive device is movable. The electric fan according to claim 1 or 2, wherein a head unit including a fan motor, a fan, a guard, and a neck piece pivotally supported to rotate up and down and up and down to 90 degrees is used.