JPS5946397A - Motor control device for fan - Google Patents

Abstract

PURPOSE:To obtain a ventilating mode in accordance with the degree of desire for cool air by a method wherein a cam zone for continuous ventilation and the cam zone for shifting to intermittent ventilation, separated from the continuous ventilating zone by the cam zone of off-cooling, are formed in a cam mechanism for opening and closing a cam switch. CONSTITUTION:When a time 3 is set to the cam zone 7 for the continuous ventilation, the movable contact piece 4c of the cam switch 4 contacts with the fixed contact piece 4a and the motor 1 is conducted through a manual airflow volume setting switch 2. The ventilating air volume may be set by switch elements 2a-2c and the constant air volume is maintained until a cam slider 9 arrives at the off-cooling zone OF1. When the timer 3 is set in the continuous conducting area 8a of the cam zone 8 for shifting to the intermittent ventilation, the movable contact piece 4c contacts with the fixed contact piece 4b of the cam switch, a speed regulating tap 1c for low speed is selected forcibly and the motor 1 is conducted continuously. When the cam slider 9 moves into an intermittent conducting area 8b, the movable contact piece 4c is displaced to a neutral position between the fixed contact piece 4b and the movable contact piece 4c to effect ON-OFF operations, thereafter, the operation of the fan is stopped when the slider 9 has arrived at the position OF2.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention uses one timer to continuously blow air at a set speed during a set time, and to continuously blow air at a set speed until the point in time when the setting is over. The present invention relates to a motor control ηO device for an electric fan that is capable of selectively performing operation that automatically shifts to an intermittent air blowing state thereafter.

[Technical background of the invention]

Generally, the electric fan 33 is equipped with a manual volume setting switch and a timer, and has the function of blowing a set constant air volume (and waiting for operation for a desired time).

[Background technology! 1 Problem] With such an electric fan, for example, if you go to bed with the fan running, even if you wish to have intermittent ventilation so that it does not get too cold at the time of sleep, this cannot be satisfied. On the other hand, if you use an electric fan with a timer that automatically sends it to the M+ state after the set time has elapsed, even in the normal cooling/IJ state, there will always be a pop-up time, which will leave you dissatisfied. .

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and its purpose is to provide a function that allows one operation of continuous exit with a manually set constant air volume to continue until the set time limit ends, and a function that continues continuous air flow halfway between the settings li. Provides a motor control device for a single fan, which has both the function of automatically switching to an intermittent air blowing state, and the function of automatically switching to an intermittent air blowing state, and allowing the user to freely select the air blowing mode according to the circumstances in which the user wants to cool down. It's true.

[Summary of the invention]

In the present invention, a cam mechanism for opening and closing a cam switch constituting a timer is formed with a continuous air blowing force 11 area and an intermittent air transition force area separated by a bright area, and the continuous air blowing cam area is selected. In the state ℃, continuous air supply operation at a manually set constant air volume continues until the end of the time limit, and in the state where the cam area for transitioning to intermittent air supply mode is selected, the mode automatically changes to intermittent air operation mode from the second half of the time period. This makes it possible to obtain a ventilation mode depending on the situation for cooling off.

[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to FIGS. 1 to 53. In the figure, 1 is a speed control tap Ia for high speeds and a speed control tap 11 for medium speeds).

A motor for blowing air that has a speed control tap 10 for low speed and a common end 1d.These speed control taps 1a to 1G are connected to the cam switch of the timer 3 via the switch elements 2a, 2b, 2c of the manual air volume setting switch 2. One fixed contact piece 4a of 4
It is connected to one end of a power supply plug 5 via a movable contact piece 4c, and the common terminal 1d of the motor 1 is connected to the other end. Also, the other fixed contact piece 4 of the cam switch 4
b is connected to the speed adjustment tap 1C for low speed. A cam mechanism 6 controls the opening and closing of the cam switch 4, and together with the cam switch 4 constitutes the timer 3. This cam mechanism 6 uses, for example, a mainspring as its driving source, and as shown in principle in FIG.
The continuous air blowing cam area 7 is placed in the section L1 corresponding to approximately half of the one rotation area, and the intermittent air transfer cam area 8 is placed in the section L2 corresponding to the remaining half circumference area, respectively.
.

0) 2. The intermittent air flow transition cam region 8 is formed with a continuous energization region 8a and an intermittent energization region 8b located in the latter half region. This cam 8866 and one! Describing the interlocking relationship with the J-mu switch 4, the movable contact piece 4C is in closed contact with the stationary phase a when the cam slider 9 is on the first base circle C1 that coincides with the continuous ventilation cam area 7. Cam slider 9 is in bright area O
F1. When it is on the second base circle C2 that coincides with OF2, it is middle A'! state, and the cam slider 9 is in the continuously energized area 3a.
When it is on the third base circle C3 that coincides with C3, it is in closed contact with the other stationary phase C4b. Fig. 2 shows the operation surface section 10 of the timer 4 as described above. One card table 73 < part, and the other part that corresponds to Figure 1 has the same seasonal month as Figure 1.

Next, the operation of the above structure will be explained. Now timer 4
If the knob 11 is set to an arbitrary time period in the range 7 for continuous air blowing, then the movable contact piece 4G of the cam switch 4 will be closed to the fixed contact piece 4a. , the motor 1 is energized via the air volume manual setting switch 2. In this case, the feed PJA amount is set by selecting the speed adjustment taps 1a to 1C using the switch elements 2a to 2G of the rotation setting switch 2, and the cam slider 9 is set in the bright area O.
The set constant air volume is maintained at the condyle reaching F1.

Next, the knob 11 is set in the cam area 8 for intermittent ventilation transition, particularly in the continuous energization area 8a. As a result of the rolling, the movable contact piece 4c of the cam switch 4 closes to the fixed contact piece 4T, and as a result, the motor 1 is forced to select the speed adjusting tap 1C for low speed and is continuously energized, so that the motor 1 is in a continuous operating state of the minimum Htl fft. become. This state continues for a predetermined period of time, and when the cam slider 9 moves into the intermittent energization area 8b, the movable contact piece 4C is displaced between the closed contact position to the fixed contact piece 4b and the neutral position, and the A-off operation is performed. As a result, the Tanabata 1 is intermittently energized via the low-speed control tap 1C, so it enters an intermittent ventilation mode in which, for example, the air is blown for 3 minutes and stopped for 2 minutes, and the slider 9 is
Operation is stopped when the second position is reached. The above operation is shown as a time chart in FIG.

〔Effect of the invention〕

According to the present invention, as described above, in the cam mechanism of the timer, a cam area for continuous air blowing and a transition cam area for intermittent air feeding separated by a bright area are formed in the cam area for continuous air blowing. Continuous air blowing operation can be set at the cam area for continuous air blowing under the set speed of the motor for use.In addition to being able to perform continuous air blowing operation at will, it is also possible to select the cam area for intermittent air feeding before going to bed, etc. When the operation is started, the continuous air blowing operation is performed for a predetermined period of time, allowing for sufficient cooling, and after that, the air blowing is performed intermittently for a predetermined stop time, which results in a continuous decrease in body temperature. It has advantages that cannot be achieved by simply reducing the air volume, such as preventing excessive cooling inside the room and allowing children to cool down with peace of mind. It is possible to obtain the following effects.

[Brief explanation of drawings]

1 to 3 relate to one embodiment of the present invention; FIG. 1 is a connection diagram together with a cam of a timer, FIG. 2 is a plan view of the operating portion of the timer, and FIG. 3 is a time chart. In the figure, 1 is the motor, 1-a to 1C are speed adjustment taps, 2
is an air volume manual setting switch, 3 is a timer, 4 is a cam switch, 6 is a cam mechanism, 7 is a cam area for continuous air blowing, 8 is a cam area for transitioning to intermittent air blowing, 8a is a continuous energization area, and 8b is an intermittent energization area. . Applicant Tokyo Shibaura Electric Co., Ltd. No. 1 M Figure 2 Figure 3

Claims (1)

[Claims] 1. Equipped with a blower with a plurality of speed adjustment taps, a cam mechanism rotated by a drive source, and a cam switch opened and closed by the cam mechanism to control the power on and off of the motor. 11. A timer and a wind control setting switch for selecting and selecting the speed adjustment tap are provided, and the motor is set via the speed adjustment tap selected in the cam mechanism.
The cam area for continuous air blowing, which is continuously energized for 1 hour, and this cam area are separated by a bright area, and the power area for transitioning to intermittent air blowing, which automatically changes to the intermittent energized state after the motor is not continuously energized for a predetermined period of time, is divided by a bright area. The fan's motor control device features a mouth formed with a.