JPS61212697A - Device for adjusting height of electric fan - Google Patents

Abstract

PURPOSE:To improve the operational performance of the captioned electric fan by bending the end part of a stopper plate on the front surface side of the electric fan and extending it along the longitudinal direction of a movable pipe to the extent of forming L figure-like shape so as to allow the extension part to have the function of a push type operating lever for connecting and disconnecting the stopper plate to and from a movable pipe. CONSTITUTION:In a device 10 for adjusting the height of an electric fan, a stopper plate 16 having an opening in which a movable pipe is inserted, is provided on the upper end of a pipe supporting part 13. The stopper plate 16 is provided with a rising part 17 which is formed in such a way that the end part thereof is bending and extending it upward to the extent of forming L figure-like vertical section and the movable pipe 11 is bonded with the opening 15 at the front end side and the inner edge part on a rear end side, thereby a braking force is applied to the upward energized motion of the pipe. Owing to this arrangement, the pushing action of the operating lever enable the stopper plate to horizontally swing so as to close the opening for the switch with said switch itself. Thus, the operational performance of the electric fan is improved without the invasion of dust.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a height adjusting device for an electric fan, and more specifically, the present invention relates to a height adjusting device for an electric fan, and more specifically, the height of the fan is adjusted by moving the position of the fan up and down using a movable pipe equipped with a fan at the upper end. Relating to a device for adjustment.

(Prior Art) Conventionally, a device for adjusting the height of an electric fan by moving the fan up and down using a movable pipe having a fan at the upper end is disclosed in, for example, Japanese Patent Laid-Open No. 118371/1983. It was composed of That is, in the conventional electric fan 1 of this type, the height adjustment device 2 is provided with a movable pipe insertion hole in the center inside the support 4 which slidably supports the movable pipe 3 as shown in the fourth column and FIG. A stopper plate 6 having an opening 5 was arranged. This stopper plate 6 is mounted inside the support 4 so as to be able to swing up and down using the vicinity of one end on the front side of the electric fan as a fulcrum, and the movable pipe 3 is inserted into the opening 5 of the stopper plate 6 . A spring 7 is engaged with the one end of the stopper plate 6 to pull the one end downward, thereby constantly deflecting the other end of the stopper plate 6 upward. Therefore, the stopper plate 6 is inclined with respect to the movable pipe 3, and as a result, the diameter of the opening 5 in the inclination direction of the stopper plate 6 when viewed in plan becomes smaller, and the inner edge of the opening 5 on one end side and the other end becomes smaller. contacts the movable pipe 3 and brakes its movement (increased to %).

The other end of the stopper plate 6 protrudes outward from a slit 8 formed on the back surface of the expanded column 4, and an operating lever part 9 is provided in the protrusion. Therefore, when this operating lever portion 9 is pushed down, the stopper plate 6 becomes horizontal, thereby releasing the contact between the front and rear inner edges of the opening 5 of the cyst collar plate 6 and the movable pipe 3. 3 can rise.

(Problem to be Solved by the Invention) However, in the conventional electric fan height adjustment device, the operating lever part 9 of the stopper plate 6 is made to protrude outside the support on the side opposite to the fulcrum, so the stopper plate 6 is held horizontally. The stroke for positioning was long, and as a result, the length of the slit 8 had to be increased.

The longer length of the slit means that the opening area in the open state is larger, which allows dust to enter, and also for design reasons, this slit is formed on the front side of the support of the fan. It had the disadvantage of being difficult to operate because it was hidden behind the camera.

Therefore, an object of the present invention is to solve such conventional problems, and to adjust the height of an electric fan with good operability without creating a slit or large opening that would allow dust to enter the height adjustment operation part. The goal is to provide equipment.

(Means for Solving the Problems) The electric fan height adjustment device of the present invention has an L-shape as a whole by bending the end of the stopper plate on the front side of the electric fan and extending it along the longitudinal direction of the movable pipe. It is characterized in that the extension part is used as a pressing lever for releasing the connection of the stopper plate to the movable pipe.

(Function) According to the electric fan height adjusting device of the present invention having such characteristics, when the stopper plate, which is obliquely deviated with respect to the movable pipe, is leveled to apply a brake to the upward movement of the movable pipe, the electric fan If you push in the operating lever that stands vertically in front of the lever, the stopper plate will swing around the fulcrum provided on the bottom surface near the base of the operating lever and become horizontal, releasing the brake on the movable pipe and allowing it to be pulled upward. I can do it.

(Example) Hereinafter, the electric fan height adjusting device of the present invention will be described in more detail with reference to the embodiment shown in the accompanying drawings.

FIG. 1 shows an electric fan height adjusting device IO according to an embodiment of the present invention. This height adjustment device IO is the fourth
Like the electric fan shown in the figure, it is installed inside a column 12 that slidably holds a movable pipe 11 that supports a fan, a motor, etc. at its upper end.

That is, a cylindrical pipe holding portion 13 is provided inside the support column 12.
is formed integrally with the support column 12, and this pipe holding portion 13
A movable pipe 11 is slidably inserted therein. The upper end of this pipe holding part 13 and the front side of the electric fan (the first
A fulcrum portion 14 projecting upward is formed on the left side (as seen in the figure). At the upper end of the pipe holding part 13, as shown in FIG.
An opening 15 through which the movable pipe 11 is inserted as shown in FIG.
A stopper plate 16 is placed thereon. This stopper plate 16 is located at one end (front end) on the front side of the electric fan.
It has a raised part 17 that is bent and extends upward, and has a cross-sectional shape as a whole, and this raised part 9 serves as an operating rod, which will be described later.

Accordingly, the fulcrum portion 14 is positioned in contact with the lower surface of the stopper plate between the base of the operating rod 17 and the movable pipe insertion opening 15.

A spiral spring device 19 is attached to the lower end of the movable pipe 11 using a stopper 18, and biases the movable pipe 11 with a constantly increasing deflection force. One end of the spiral spring 19a wound around the spiral spring device 19 is locked to the base of the operating rod 17 of the stopper plate 16. As a result, the base of the operating rod of the stopper plate 16 is pulled downward by the tensile force of the spiral spring 19a, and as a result, the other end of the stopper plate 15 (the end on the back side of the fan, that is, the rear end) is pulled downward by the fulcrum part 14. It is said that it is in a state where it has sprung up and is tilted. Due to the inclination of the stopper plate 15, the front and rear inner edges of the opening 15 are joined to the movable pipe 11 inserted through the opening 15, and the upward bias of the movable pipe 11 is braked. As a result,
When the operating rod 17 that stands up diagonally is pushed toward the movable pipe, the stopper plate 16 swings about the fulcrum 14 and becomes horizontal, so that the stopper plate 16 swings around the fulcrum part 14 and becomes horizontal, so that both inner edges of the front and rear ends of the opening 15 and the movable pipe 11
The movable pipe 11 is lifted up by the spiral spring device 19.

The operating rod 17 on this stopper plate 16 is shown in FIG.
A push button 20 as shown in b) is attached. The push button 20 has a U-shaped cross section with an open back, and seven rank portions 20c and 20d projecting upward and downward are formed at each end of an upper wall 20m and a lower wall 20b. An opening 20e is formed at the base of a seven-rank portion 20c that projects upward from the end of the earthen wall 20a.

Such a push button 20 has an opening 2 at the base of the flange portion 20c.
The protrusion 17a formed at the upper end of the operating rod 17 is inserted into the operating rod 17 to be hooked onto the operating rod 17.

The support 12 is divided into a support main body 12a and a base 12b attached to the top thereof, and a notch is formed at the upper end of the wall of the support main body 12a and the lower end of the wall of the base 12b, which are located on the front side of the electric fan. An opening 21 into which the push button 20 is fitted is formed. As a result, the push button 20 engaged with the operating rod 17 is fitted into the opening 21 of the front wall of the support column 12 from the inside, as shown in FIG. 3, so that the front wall 20f is exposed to the outside.

Therefore, when the user adjusts the height of the electric fan, by pushing in the push button 20 exposed on the front side of the electric fan so as to slightly protrude from the opening 21 of the support column 12, the stopper plate 16 is activated via the operation rod 17 as described above. When the movable pipe becomes horizontal and the movable pipe is allowed to rise, and when the push button 20 is released, the stopper plate 16 returns to the original braking position, that is, the inclined state, by the spiral spring 19a. In FIG. 1, reference numeral 22 indicates a lead wire that passes through the movable pipe 11 and is connected to the heptad at the upper end.

(Effects of the Invention) As described above, according to the electric fan height adjustment device of the present invention, the stopper plate that brakes the rise of the movable pipe can be horizontally oscillated by pressing the operating rod. For example, when a push button is used to push in an operating rod, the opening in the column into which the push button fits is always closed by the push button, so there is no intrusion of dust, and the column opening is left open. Since the electric fan does not erode when left in its original state, no design problem occurs even if the operating rod is placed in front of the electric fan and operated, and therefore, the operation becomes very easy and the operability is improved.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view of a fan support to show a height adjusting device for a fan according to an embodiment of the present invention, and FIG. 2(a) is a perspective view showing a stopper plate constituting the height adjusting device. ,
Figure 2(b) is a push button that is locked to the operating rod of the stopper plate, Figure 3 is a front view of the upper part of the support seen from the front side of the electric fan,
FIG. 4 is a side view showing a conventional electric fan equipped with a height adjusting device, and FIG. 5 is a cross-sectional view showing the conventional height adjusting device, with the upper part of the electric fan shown in FIG. 4 cut away. lO... Height adjustment device, 11... Movable pipe, 12
... Support column, 14 ... Support part, 15 ... Opening, 16
...Stopper plate, 17...Operation rod, 20...Push button. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] A movable pipe that is equipped with a fan at its upper end and is constantly given an upward pushing force, and a stopper plate that comes into contact with and separates from the outer peripheral surface of the movable pipe and that is constantly connected to the outer peripheral surface of the movable pipe to stop its upward movement. In a height adjusting device for a fan, which includes a stopper plate to which a deflection force is applied to make the stopper plate A height adjusting device for an electric fan, characterized in that the device has a pressing operation lever for releasing the connection of the movable pipe to the movable pipe.