JPH0732958Y2 - Height adjustment device for electric fan - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention is used in the technical field of electric fans, and specifically, the height of the electric fan (the height of the stand) can be arbitrarily adjusted. Height adjustment device.

[Conventional technology]

In the conventional fan, the number of rotations of the fan is switched to multiple stages to adjust the air volume, the neck swing angle is configured in a double structure,
By adjusting the height of the stand to be adjustable, it is designed to send the wind of any strength to the desired location at any angle to give the human body a pleasant cooling feeling, but the adjustment of the air volume is pushed. It is made by switching the button switch, and the swinging angle of the neck is adjusted by operating the knob attached to the head up and down.Furthermore, the height of the stand is operated by rotating the handle, using hydraulic pressure or spring. The operation was very complicated in that it had to be adjusted manually by directly operating the elevating device, which had to be operated manually.

Therefore, it was considered to automatically perform each operation of the air volume, the swinging angle, and the height by electronic control.

However, since the air volume and the swinging angle are both adjusted by controlling the rotation of the fan motor,
Although it can be easily electronically controlled, most of the conventional general electric fans can be easily electronically controlled because the height of the stand is adjusted exclusively by mechanical means such as hydraulic pressure, springs, or gears. There was a problem I couldn't do.

On the other hand, Japanese Utility Model Laid-Open No. 61-29096 (Japanese Patent Application No. 59-11403).
The fan described in No. 0) can be electronically controlled because the height of the stand can be adjusted by rotating the motor.

[Problems to be solved by the device]

However, in the above fan, the height is adjusted by rotating the pulley with a motor to wind up or wind down the wire. Then, there was a problem that the height adjustment became abnormal.

SUMMARY OF THE INVENTION Therefore, the technical problem of the present invention is to make it possible to adjust the height of an electric fan directly by electronic control directly or by a remote controller or a program easily and even accurately.

[Means for Solving the Problems]

Means taken in the present invention to solve the above technical problems are as follows.

(1) A supporting rod having a pipe structure that supports a fan and a head of a fan to which the motor is attached is inserted into a stand rod having the same pipe structure that is erected on the machine stand so as to be vertically movable. While attaching the nut body to the lower end,
A screw shaft rotated by an electronically controllable motor mounted in the machine base is inserted into the inside of the stand rod, and this screw shaft is placed inside the nut body so that the supporting rod can be moved up and down. Screw in.

(2) On the machine base, an operation panel board that can manually operate the rotation of the motor and a remote control signal receiver that can also be remotely operated are provided.

[Action]

 The above means operate as follows.

The element described in (1) above raises and lowers the head of a fan with a fan and its motor mounted by screwing a screw shaft rotated by an electronically controllable motor and a nut body mounted on the support rod side. With this configuration, the head of the fan can be smoothly and accurately moved up and down in an extremely stable state by electronic control, and the up and down operation can be programmed.

The element described in (2) above enables the up / down operation of the electric fan (head) by an electronically controllable motor to be manually operated directly using the operation panel provided on the machine base, while using the remote control transmitter to separate It is possible to operate up and down accurately even from a closed place.

As described above, the technical problems described above can be solved by the above means, and the problems of the conventional technology can be solved.

〔Example〕

Hereinafter, preferred embodiments of the height adjusting device for a fan according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an embodiment of a fan equipped with a height adjusting device according to the present invention, and FIG. 2 is an enlarged sectional view of an essential part of the fan. In the figure, 1 is a fan base (base), 2 is a stand having a pipe structure standing on the base 1, and 3 is a support rod that is vertically slidably fitted into the inside 2a of the stand 2. , The fan 5 and its guard 6 are attached to the upper end of the support rod 3, and the fan 5
A head 4 having a built-in motor (not shown) is attached so that the swinging angle can be adjusted. The support rod 3 can slide up and down with respect to the stand 2, but cannot rotate.

Next, 7 is a nut body attached to the lower end portion of the support rod 3. The nut body 7 has an electronically controllable pulse motor or servo motor attached to the machine base 1 or a DC motor.
A screw shaft 9 rotated by various motors 8 such as a motor and an AC motor is screwed in, and the tip end thereof is inserted into the inside 3a of the support rod 3. Reference numeral 10 indicates a support ring for the screw shaft 9.

Further, in the figure, 11a and 11b are upper and lower limit switches mounted on the upper and lower side surfaces of the stand 2, respectively, and these supporting switches 3a and 11b are moved up and down by forward or reverse rotation of the screw shaft 9. When the nut body 7 is detected, the rotation of the motor 8 is stopped and the lifting and lowering of the supporting rod 3 is stopped to prevent the supporting rod 3 from rising and falling more than necessary. .

Reference numeral 12 denotes a sensor for remote control signals provided on the front surface of the machine base 1, which transmits a remote control signal consisting of radio waves, sounds or light sent from a transmitter (not shown).
The remote control unit controls the rotation of the motor 8 by receiving the signal. Furthermore, what is generally indicated by reference numeral 14 is
A raising switch 13a for rotating the motor 8 in the forward direction to raise the supporting rod 3, a conversely lowering switch 13b for rotating the motor 8 in the reverse direction to lower the supporting rod 8, and the motor 8
An operation panel board having a keyboard 13c for inputting and changing a control program for the motor 5a (see FIG. 3) of the fan 5 and the configuration shown in FIG. 1 is merely an example of the embodiment. .

FIG. 3 is a block diagram showing an electric configuration of the height adjusting device for a fan according to the present invention, which is a CPU 15 forming the center of a control unit and a memory ROM 16 storing a system program.
A fan motor 4a, a lifting motor 8, the upper and lower limit switches 11a and 11b described above, and a remote control sensor 12 are connected to an I / O port 18 connected between And switches 13a, 13b and keyboard 13c of the operation panel board 14 are connected, and a clock circuit 19 for transmitting a reference clock signal is connected, and each is controlled according to a program stored in the memory 16. Made of

That is, the electronically controllable motor 8 can be remotely operated by sending a remote control signal to the remote control sensor 12, or manually operated by using the switches 13a and 13b of the operation panel board 14, Since it is also possible to automatically control the microcomputer according to the program stored in the memory 16, the height of the fan, which has only been manually operated until now, can be freely adjusted by the above three kinds of means. .

〔effect〕

As described above, according to the height adjusting device for a fan according to the present invention, the height adjustment, which has been limited only to manual operation until now, can be performed by remote control or program control according to the adoption of the electronically controllable motor. Since it has been made possible, for example, it is possible to operate the height of the fan from a distant position to any height, or to perform a novel operation that the height can be automatically adjusted according to the time (program). And, while it is possible to eliminate the complexity of high and low operation, while adjusting the height of the fan by screwing the screw shaft and the nut body,
It is possible to provide a revolutionary electric fan capable of performing height adjustment extremely smoothly in a stable state over a long period of time.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of a fan equipped with a height adjusting device according to the present invention, FIG. 2 is an enlarged cross-sectional view of an essential part thereof, and FIG. 3 is the present invention. 3 is a block diagram showing the electrical configuration of FIG. 1 is a machine stand, 2 is a stand, 3 is a support rod, 4 is a head, 5
Is a fan, 7 is a nut body, 8 is a motor, 9 is a screw shaft, 12
Is a remote control sensor, 14 is an operation panel board, 15 is a CPU, and 16 is a memory.

Claims (1)

[Scope of utility model registration request] 1. A support rod having a pipe structure for supporting a head of an electric fan having a fan and a motor attached thereto is inserted into a stand rod of the same pipe structure, which is erected on a machine stand, so as to be vertically movable. While a nut body is attached to the lower end of the rod, a screw shaft rotated by an electronically controllable motor mounted in the machine base is inserted into the stand rod, and the screw shaft is attached to the support rod. It is screwed into the nut body so that it can be moved up and down, and the machine base has an operation panel board that can manually operate the rotation of the motor and a remote control signal reception that can also be remotely operated. A height adjusting device for a fan, which is provided with a section.