KR920004789Y1 - An electric vacuum cleaner - Google Patents

Abstract

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Description

Power cut control device of vacuum cleaner

1 is a front view showing a part of the vacuum cleaner having a device of the present invention in cross section.

2 is an excerpt of the "A" part of FIG. 1, (a) is a state in which the float is not raised, and (b) is a state in which the power is cut off due to the rise of the float.

FIG. 3 is an enlarged view of portion “B” of FIG. 2B.

4 is a front view showing a part of a conventional vacuum cleaner in cross section.

5 is a working state of the ball.

Figure 6 is an excerpt "C" of Figure 4;

* Explanation of symbols for main parts of the drawings

3: motor 4: inner lid

5: hole 7: ball

10: fixed contact terminal 11: movable contact terminal

The present invention relates to a drum type vacuum cleaner used to clean various kinds of dirt or contaminated liquids. More specifically, the power of the vacuum cleaner is automatically cut off when the liquid is sucked up to the limit amount during the suction cleaning of the liquid. A blocking control device.

Drum type vacuum cleaners which have been generally used in the prior art are fixed to one side wall of the drum 1, drums for collecting various dusts and liquids as shown in FIGS. 4 to 6, and suction hoses (not shown). A drum locker (2), which serves as a connector and prevents direct suction of solid dirt from colliding with the drum wall, a motor (3) installed at the top of the drum to generate suction force on the drum, and supports the motor. And the inner lid (4), which serves to reduce vibration or noise when the motor is driven, the float frame (6) coupled to the bottom center of the inner lid, and the level of liquid sucked into the drum while being embedded inside the float frame. According to the buckle (7), which serves to open and close the hole (5) formed in the inner lid while filtering, the filter (8) for filtering dirt and dust sucked in the drum, the upper lid (9) coupled to the upper motor Composed All.

Therefore, when power is supplied to the motor 3, the impeller inside the motor rotates at a high speed to generate suction force inside the drum 1, and the liquid contaminated by the suction force is transferred to the drum through the suction hose and the drum locker 2. 1) It is sucked into the inside, and the sucked dirt falls down while being filtered by the filter 8 and is collected in the drum 1.

In such a vacuum cleaner, the buckle 7 installed below the inner lid 4 serves to protect the vacuum cleaner by controlling the suction amount of the liquid when cleaning the liquid dirt.

That is, in a state in which the liquid cleaner liquid is sucked to a predetermined amount or less, the float 7 is in the same state as the second a degree, and the level of the liquid is sucked up to the float stop line Y through the float float X. When the buckle 7 closes the hole 5 formed in the inner lid 4, it prevents the liquid from being sucked into the installation portion of the motor 3 through the hole 5 and prevents the closing operation of the hole 5. Therefore, the electrical equipment including the motor 3 can be protected from the liquid.

However, the conventional vacuum cleaner as described above can prevent the damage to the motor and the electronics caused by the liquid flow into the motor installation by blocking the hole formed in the inner lid when the liquid is sucked to the branch stop line, Even when the inflow of liquid is blocked, the motor is continuously supplied with power and the impeller rotates, causing the motor to be overloaded, resulting in a decrease in the performance of the motor as well as shortening the life of the motor. This may cause a safety accident such as a fire in severe cases.

It is an object of the present invention to provide a power cut control device that can cut off a hole by a mouth when liquid is sucked up to a mouth stop line.

In order to achieve the above object, a fixed contact terminal is fixed to the inner lid of the vacuum cleaner of the present invention, and a movable contact terminal is installed above the float to move according to the position of the float. Power supply is to be turned on or off.

Hereinafter, the present invention will be described in detail with reference to FIGS. 1 to 3.

1 is a front view showing a part of a vacuum cleaner having a device according to the present invention in cross section, a drum 1, a drum locker 2, a motor 3, and an inner lid 4 having a hole 5; ), The float frame 6, the float 7, the filter 8, the same as the conventional vacuum cleaner of the upper lid (9).

The power cutoff control device of the present invention has a spool-shaped movable contact terminal 11 which is inserted into the fixed contact terminal 10 fixed to the bottom surface of the inner lid 4 and the hole 5 of the inner lid to be elevated. And a spring 12 installed between the bottom of the inner lid and the lower end of the movable contact terminal 11.

The movable contact terminal 11 is formed in a space therein so that the upper and lower portions of the inner lid 4 pass through each other, and the spring 12 exerts a downward force on the movable contact terminal 11 at all times. The thermocouple is used to connect the movable contact terminal 11 to the fixed contact terminal 10 in a normal use state, and the spring is selected to have an elastic modulus smaller than the buoyancy of the buckle 7.

In addition, the movable contact terminal (11) is guided to the bent frame (6) to move up and down, the movable contact terminal (11) and the fixed contact terminal (10) is connected to the power supply circuit of the motor to each contact terminal (10) 11) If it falls, the motor's power is cut off.

Therefore, when cleaning the liquid dirt by the vacuum cleaner, after the liquid is sucked into the drum 1 and the liquid level reaches the float float line X, the float 7 becomes buoyant by the buoyancy as the level rises gradually. It rises along (6) and connects to the bottom surface of the movable contact terminal 11, and until this time, each contact terminal 10, 11 maintains a connection state by the force of the spring 12 like 2a.

However, when the water level is higher in this state, the movable contact terminal 11 is raised while compressing the spring 12 by the buoyancy force of the float 7 so that the upper surface of the movable contact terminal 11 is fixed contact terminal 10 as shown in FIG. When the power supply to the motor 3 is cut off and the motor 3 stops operation, the float 7 rises to the position of the float stop Y, and the inner lid 4 Closing the hole (5) to prevent the sucked liquid from entering the motor installation portion.

As described above, the present invention is that when the liquid is sucked up to the limit amount during the cleaning of the liquid soil, the hole, which is a passage through the upper part, is closed and the power supply of the motor is automatically cut off, so the motor continues to operate in the closed state. It can prevent the overload of the motor caused by this, and the deterioration of the motor and shorten the lifespan caused by the motor. Also, it is possible to prevent the damage of electric equipment and the risk of fire due to the temperature increase of the motor.

Claims (1)

In the case where the float frame 6 is fixed below the inner lid 4 on which the motor 3 is supported, and the float 7 is embedded therein, the fixed contact terminal 10 is attached to the bottom surface of the inner lid 4. ) And the movable contact terminal 11 is coupled to the hole 5 of the inner lid so that the movable contact terminal is shorted at the fixed contact terminal and the power of the motor is cut off at the same time as the buoy 7 rises. Power cutoff control device of the vacuum cleaner, characterized in that.