JPH0442666Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a local air conditioner that can reach a three-dimensionally wide area of cold air.

(Prior art) A system in which the root part of the casing side of the air duct has a movable structure is known from Japanese Utility Model Application Publication No. 61-101333, etc., but this uses a link mechanism to automatically swing in one direction such as up and down. The range of motion is limited.

(Problem to be solved by the invention) In the conventional air conditioner mentioned above, the swing angle and direction are fixed and cannot be changed, so the distance that the cold air can reach is limited. Air conditioning for workers has not been able to provide a sense of comfort.

The present invention has been made to solve these problems and provide a local air conditioner that can freely change the rotation angle, speed, and direction. An object of the present invention is to provide a local air conditioner that can create a more comfortable feeling at a low cost by forming a rotatable joint from a flange and a bent duct connecting member at the base of a blower duct. purpose.

(Means for Solving the Problems) As is clear from the examples, the present invention provides a local air conditioner in which a flange 6 integrally having an outer flange 13 at one end of a short cylinder 12 is used to connect a cooler and a fan. It is fixed by the outer collar 13 to the peripheral edge of the cold air outlet 3 opened in the built-in casing 1, and the base of the duct connecting cylinder member 7 bent at an obtuse angle is attached to the short cylinder 12 so as to be airtight and rotatable. On the other hand, a gear 8 is integrally formed on the outer peripheral portion of the base of the duct connecting cylinder member 7, and a stepping motor 9 is fixed on the casing 1 near the duct connecting cylinder member 7. , a timing belt 11 is provided between the small gear 10 attached to the drive shaft of the stepping motor 9 and the gear 8.
It is characterized in that the duct connecting cylinder member 7 can be rotated within a predetermined angle by being stretched.

(Function) The present invention transfers the rotational force of the stepping motor 9 to the duct connecting cylinder member 7 via the timing belt 11.
It has a structure in which the transmission is transmitted to the gear 8 portion of the shaft, and it does not cause any slippage and can be turned quietly.Furthermore, since it is a turning structure, it is possible to swing the head at a wide angle of nearly one revolution.

In addition, by changing the number and speed of pulses applied to the stepping motor 9, the swing angle and speed can be adjusted.
The direction of the center of oscillation can be arbitrarily selected.

(Example) Hereinafter, an example of the present invention will be described based on the accompanying drawings.

Fig. 3 is an external view of a local air conditioner according to an example of the present invention, and although not shown inside the vertically long casing 1, there are a compressor, a condenser, an expansion valve, and an evaporator as a cooler. Necessary equipment such as a container is built in, and a cooling air inlet 2 is opened at the upper part of the side panel, and a cold air outlet 3 and an exhaust grille 4 are opened at the left and right portions of the upper panel.

A duct joint mechanism is disposed at the cold air outlet 3, and the base of the flexible duct 5 is connected to this joint mechanism.

The above-mentioned joint mechanism is a characteristic feature of the present invention, and its details are shown in FIGS. 1 and 2. A duct connecting cylindrical member 7 that is rotatably fitted externally, a gear 8 provided integrally with the cylindrical member 7, and a casing 1 in the vicinity of the cylindrical member 7.
A stepping motor 9 fixed on the top, a small gear 10 attached to the drive shaft of the motor 9, and a timing belt 11 stretched between the two gears 8 and 10 are used as element members. There is.

The flange 6 has an outer flange 13 integrally attached to one end of a short cylinder 12, and is made of light alloy or hard synthetic resin.The flange 6 is fixed to the peripheral edge of the cold air outlet 3 with the outer flange 13 to form a short cylinder. 12 is held upright.

On the other hand, the duct connecting cylindrical member 7 is a cylindrical body bent at an obtuse angle, and is also made of light alloy, hard synthetic resin, etc. The base is, for example, a three-stage cylinder, and the small diameter part and the large diameter part are made of fluororesin. The sliding gouts 14 with a small coefficient of friction are interposed to fit the short cylinder 12 of the flange 6, and the middle diameter part is fitted to the short cylinder 12 with a sealing material 15 interposed.
The distal end portion serves as a connecting portion to which the base portion of the flexible duct 5 can be internally fitted and connected.

The cylindrical member 7 configured in this way is the sliding gear 1.
4 and the sealing material 15, it can be freely turned around the short cylinder 12 of the flange 6 while maintaining airtightness.

The cylindrical member 7 further includes a gear 8 on the outer peripheral portion of the base.
It has an integral surrounding area.

On the other hand, the stepping motor 9 is fixed to the top plate of the casing 1 with its axis vertical, but in the example shown, it is fixed to the outer flange 13 of the flange 6 and fixed to the casing 1.

This stepping motor 9 is a known motor that rotates at a rotation angle proportional to the number of pulses by applying a pulse voltage to a coil with different polarity. is changed, and a small gear (pinion) 10 on the drive shaft is connected to the gear 8.
It is fitted horizontally at the same level as the

The timing belt 11 has both gears 8,
It is a reinforcing rubber belt having convex portions and concave portions corresponding to 10 teeth, and is stretched between both gears 8 and 10, meshed with each other, and stretched.

In FIGS. 1 and 2, reference numeral 16 is a cover that is covered so that the flange 6, the base of the duct connecting cylinder member 7, the stepping motor 9, and the timing belt 11 are not exposed.

In the air conditioner having the above configuration, the duct 5 is operated by hand to position the tip of the duct, as in the conventional machine.

Next, the stepping motor 9 is driven to reciprocate the cylindrical member 7 at an arbitrary angle, for example, within a range of 100 degrees, regardless of the movement of the person.
It is possible to swing the head automatically at a speed of approximately 100 degrees, and thus the tip of the duct 5 can be swung horizontally within a range of 100° to blow air over a wide range.

On the other hand, as shown in FIG. 3, a sensor 17 whose axis is oriented in the direction of the air outlet is attached to the air outlet end of the duct 5 to detect a moving person and automatically track the person and direct the air outlet. I can do it.

In this case, it goes without saying that the number and interval of pulses applied to the stepping motor 9 may be changed depending on the movement range and speed of the person.

(Effect of the invention) In the present invention, the duct connecting cylinder member 7 can be rotated using the stepping motor 9 as a driving source via the small gear 10, the timing belt 11, and the gear 8, so that the number and speed of the pulse voltage can be changed. By simply selecting the swing angle, speed, and direction, you can freely obtain a more desirable range of cold air, making it possible to achieve more comfortable local cooling.

Further, since the timing belt 11 is used, there is no slippage at all, and quiet operation is achieved.

[Brief explanation of drawings]

1 and 2 are a front sectional view and a plan view showing the main structure of an embodiment of the present invention, and FIG. 3 is an external perspective view. 1...Casing, 3...Cold air outlet, 6...
Flange, 7...Cylindrical member for duct connection, 8...Gear, 9...Stepping motor, 11...Timing belt, 12...Short cylinder, 13...Outer flange.

Claims (1)

[Scope of utility model registration request] A flange 6 integrally having an outer flange 13 at one end of the short cylinder 12 is fixed by the outer flange 13 to the peripheral edge of the cold air outlet 3 opened in the casing 1 containing a cooler and a fan, and is bent at an obtuse angle. The base of the duct connecting cylindrical member 7 is externally fitted into the short cylinder 12 in an airtight and rotatable manner, and a gear 8 is integrally formed on the outer peripheral portion of the base of the duct connecting cylindrical member 7. , a stepping motor 9 is fixed on the casing 1 near the duct connecting cylinder member 7, and a timing belt 11 is inserted between the small gear 10 attached to the drive shaft of the stepping motor 9 and the gear 8. A local air conditioner characterized in that the duct connecting cylinder member 7 can be rotated within a predetermined angle by being stretched.