DESC: FORM 2
THE PATENT ACT 1970 (as amended)
(39 of 1970)
&
The Patents Rules, 2003

COMPLETE SPECIFICATION
(See section 10 and rule 13)

1. TITLE OF THE INVENTION

“IMPROVED MECHANISM FOR ATTAINING VARIABLE ANGLE OF OSCILLATION IN AN ELECTRIC FAN”

2. APPLICANT(S):

OTTOMATE INTERNATIONAL PVT LTD
Awfis Space Solutions, Level # 6, N Heights, Phase # 2, Madhapur,
HITEC City, Hyderabad - 500081,
Telangana, India.

3. PREAMBLE TO THE DESCRIPTION
COMPLETE
The following specification particularly describes the invention and the manner in which it is to be performed.

4. DESCRIPTION
Technical Field of the Invention

The present invention relates generally to oscillating fans and more particularly to an improved mechanism for attaining variable angle of oscillation required by occupants in a place.

Background of the Invention

Commonly used oscillating fans operate at a fixed angle of about 90-degrees range. These fans however, can be opted to operate for oscillating mode or for fixed-direction mode by simple manipulation of a clutch knob. Fans of the type mentioned above are found not very satisfactory to some users' requirements and needs.

Various schemes have been tried to oscillate the fan to desired oscillating angle to maximize utilization of the generated air stream. Pre-adjustable cranks and devices that can oscillate to a desired angle and automatically adjusting to a lesser oscillation angle, or to “0” degrees are tried. There are fans that will change their orientation if encounters an interference by an object are tried. These efforts do work well however, need further improvement for giving maximum comfort by ensuring right desired angles.

Brief Summary of the Invention

The present invention solves this need and other problems in the field of adjustable oscillating angles of electric fans by providing, in a preferred form, an electric fan including a fan body.

The present invention is a system for attaining controlled oscillations at variable angles both in horizontal and vertical directions in an electric pedestal/wall mount fan, wherein the system comprising a motor housing connected to the fan assy, a plurality of stepper motors for both horizontal and vertical oscillations of the pedestal/wall mount fan, a motor control unit (MCU) to operate the said stepper motors, a controller inside the MCU for maintaining horizontal oscillations of the fan between the specified points, a remote and a motor driver circuit board to supply power to the stepper motors.

The system has a remote with two buttons S and E to enable the controller to read the starting and ending points of the oscillations.

The user provides a command to the system by operating/intiating one of the two buttons. The system the reads the starting and ending points of the oscillations and the signals are sent to the motor control unit (MCU) which activates the driver circuit to supply the required power to run the stepper motor either clockwise or anticlockwise.

The vertical movement of the fan will be enabled by adjusting the direction of the rotation of the stepper motor which is connected to the hinge through a gear mechanism. The utilization of air throw of the fan is improved resulting in the comfort to the user

The circuit board is loaded with data of a plurality of preset rotational angles. A comparing program is written into the circuit board and compares the rotational angle indicated by the signal with a selected one of the plurality of preset rotational angles.

Brief Description of the Drawings

Various objects and advantages of the present invention will become apparent to those skilled in the art upon reading the following detailed description of the preferred embodiments, in conjunction with the accompanying drawings, wherein like reference numerals have been used to designate like elements, and wherein:

FIG. 1 illustrates the motor housing of the proposed system connected to the fan back/assy equipped with a stepper motor for horizontal movement of the pedestal/wall mount fan according to the embodiment of the invention.

FIG. 2 illustrates the front view of the pedestal/wall mount fan operated under the proposed system according to the embodiment of the invention.

FIG. 3 illustrates the top view of the pedestal/wall mount fan depicting the controlled ranges of horizontal oscillations according to the embodiment of the invention.

FIG. 4 illustrates the front and side views of the pedestal/wall mount fan with the arrangement of another/second stepper motor connected to the hinge through a gear mechanism according to the embodiment of the invention.

FIG. 5 illustrates the proposed system with all the components according to the embodiment of the invention.

Detailed Description of the Invention

It is to be understood that the present disclosure is not limited in its application to the details of composition set forth in the following description. The present disclosure is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.

The present invention pertains to a system (500) for attaining controlled oscillations at variable angles both in horizontal and vertical directions in an electric pedestal/wall mount fan (207), wherein the system is proposed to control the range of the horizontal oscillation from full range (60° ( -30° ~ +30°)) to controlled range (20° ( -10° ~ +10°) ~ 30° ( -15° ~ +15°)) and the vertical movement is enabled by adding one more stepper motor (414) along with gear mechanism at the fan motor hinge.

Referring to the drawings, wherein like reference numerals designate identical or corresponding systems, preferred embodiments of the present invention are described.

FIG. 1 illustrates the motor housing (105) of the proposed system connected to the fan back/assy equipped with a stepper motor (102) for horizontal movement of the pedestal/wall mount fan (207) according to the embodiment of the invention. As shown in FIG. 1, the motor housing (105) is connected to the fan assy and is equipped with the stepper motor (102), shaft (106) and a connector (104). The stepper motor shaft (106) is connected to one side of the connector (104) and the other side is connecting to boss on the hinge. The shaft (106) is eccentric with the stepper motor (102), to generate oscillations while the stepper motor (102) is rotating as the Fan assy is connected to the stepper motor through connector (104).

FIG. 2 illustrates the front view of the pedestal/wall mount fan (207) operated under the proposed system (500) according to the embodiment of the invention. As shown in FIG. 2, the PCB housing (208) is equipped with a circuit board (520) having a comparing program which compares the rotational angle indicated by the signal from the remote (516) with a selected one of the plurality of required rotational angles.

FIG. 3 illustrates the top view of the pedestal/wall mount fan (207) depicting the controlled ranges of horizontal oscillations according to the embodiment of the invention. As shown in FIG. 3, the range of horizontal oscillations can be controlled from the full range (319) to the controlled range (317). When the user initiates the required button either S or E on the remote, the system (500) reads the starting and ending points of the oscillations. Once it reads starting & ending points, the controller gives command to stepper motor to rotate between the two defined points. In this way the controlled horizontal oscillations are created with unlimited options at variable angles. The “S” button is for reading the starting point and “E” for reading the ending points of the oscillations.

FIG. 4 illustrates the front and side views of the pedestal/wall mount fan (407) with the arrangement of another/second stepper motor (414) connected to the hinge through a gear mechanism according to the embodiment of the invention. As shown in FIG. 4, the second stepper motor (414) is positioned at the at the fan motor hinge along with the gear mechanism between the pivot and the stepper motor (414). The vertical movement (415) of the fan will be enabled by adjusting the direction of the rotation of the stepper motor (414) which is connected to the hinge through a gear mechanism (412).

FIG. 5 illustrates the proposed system (500) with all the components according to the embodiment of the invention. As shown in FIG 5, the user provides the command to the system (500) by operating/intiating one of the two buttons on the remote. The system (500) the reads the starting and ending points of the oscillations and the signals are sent to the motor control unit (MCU) (518) which activates the driver circuit to supply the required power to run the stepper motor (502) either clockwise or anticlockwise. The circuit board (520) contains a processor and is equipped with a comparing program which compares the rotational angle indicated by the signal with a selected one of the plurality of rotational angles. The controller (518) reads the signals from the remote and gives command to stepper motor (502) to rotate between the two defined points. In this way the controlled horizontal oscillations are achieved with unlimited options. The oscillating angle of a fan (207) may be changed when the fan is at rest and when it is running and oscillating at the same time. The utilization of air throw of the fan is thereby improved resulting in the comfort to the user

The features and advantages of the invention may be realized and obtained by means of the instruments and combinations particularly pointed out in the appended claims. These and other features of the present invention will become more fully apparent from the following description and appended claims or may be learned by the practice of the invention as set forth hereinafter.
,CLAIMS:5. Claims
I/We claim
1) An improved system (500) for attaining controlled oscillations at variable angles both in horizontal and vertical directions in an electric pedestal/wall mount fan, wherein the system comprising:
A motor housing (105) connected to the fan assy;
a plurality of stepper motors (102) & (414) for both horizontal (102) and vertical (414) oscillations of the pedestal/wall mount fan (207);
a motor control unit (MCU) (518) to operate the said stepper motors (102) & (414);
a controller inside the MCU (518) for maintaining horizontal oscillations of the fan between the specified points; and
a motor driver circuit board (520) to supply power to the stepper motors.

2) The system (500) as claimed in claim 1, wherein the motor housing (105) further comprises a stepper motor (102) for horizontal oscillations, a connector (104) to connect the motor to the shaft and other units which control the fan (207).

3) The system (500) as claimed in claim 1, wherein the stepped motors (102) & (414) are two in number each responsible for horizontal and vertical oscillations respectively. The first stepper motor (102) is positioned inside the motor housing (105) which gives horizontal movement and second stepper motor (414) along with gear mechanism (412) is placed at the fan motor hinge for attaining vertical movement of the fan.

4) The system (500) as claimed in claim 1, wherein the motor control unit MCU (518) activates the stepper motor driver circuit (520) to supply the required power to the stepper motor (102) after receiving a command/signal from the remote (516) along with the specified angles of oscillations.

5) The system (500) as claimed in claim 1, wherein two buttons are provided on the remote called "S" and "E” for the user to control the oscillations, each for reading the starting and ending points of the oscillations.

6) The system (500) as claimed in claim 1, wherein the controller gives command to stepper motor (102) to rotate between the two defined points. In this way we can create controlled oscillations with unlimited options.

7) The system (500) as claimed in claim 1, wherein the controller detects the rotational angle of the rotational shaft and the gear wheel and sends the signals to the circuit board (520) having a processor and is loaded with data of a plurality of rotational angles.

8) The system (500) as claimed in claim 1, wherein the circuit board (520) is equipped with a comparing program which compares the rotational angle indicated by the signal with a selected one of the plurality of rotational angles.

9) The system (500) according to claim 1, wherein the vertical movement is enabled by adjusting the direction of the rotation of the stepper motor, vertical movement is obtained by adding one more stepper motor (414) which is connected to the hinge through a gear mechanism (412).

10) The system (500) as claimed in claim 1, wherein the shaft (106) is eccentric with the stepper motor (102), while the stepper motor (102) is rotating for generating oscillations as the fan assy is connected to the stepper motor (102) through connector (104).

11) The system (500) as claimed in claim 1, wherein the horizontal oscillations are controlled from 60° ( -30° ~ +30°) to 20° ( -10° ~ +10°) ~ 30° ( -15° ~ +15°) and vertical movement by 20° ( -10° ~ +10°) ~ 30° ( -15° ~ +15°) with the aid of the proposed system. The utilization of air throw of the fan can be improved resulting in the comfort to the user.

DATE & SIGNATURE

Dated 04th July 2019.

Signature

(SRINIVAS MADDIPATI)
IN/PA – 3124
Agent for Applicant