JPS6342936Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a vacuum cleaner.

Generally, in a vacuum cleaner, the dust collection power decreases as the amount of dust collected increases or as the load on the electric blower increases due to the type of floor surface. For this reason, conventionally, the input of the electric blower has been adjusted by manually operating a variable resistor, but the operation is cumbersome and there is no point in using it unless you know how to use it. For this reason, we installed a sensor whose output changes depending on the air volume or wind pressure, and added an automatic adjustment device that inputs the output from this sensor to the power control circuit and automatically changes the input to the electric blower. It is considered to do so. This allows the input of the electric blower to be automatically controlled and, depending on the application, to be used to manually adjust the input. However, the automatic and manual modes cannot be determined unless one gets up close and looks at the operation panel, which is inconvenient and frustrating for the user.

This idea was developed in consideration of these points, and it allows the input of the electric blower to be automatically varied according to the type of floor surface, and also allows the input to be arbitrarily set by manual operation according to the application. The object of the present invention is to provide a vacuum cleaner whose automatic or manual control status can be checked from a remote location.

This idea includes a sensor that outputs a control signal according to changes in wind pressure or air volume, and the control signal from this sensor is input to a power control circuit to automatically control the input to the electric blower depending on the type of floor surface. In addition, depending on the application, the input regulator can be manually operated to change the control signal from the input regulator, and this control signal can be input to the power control circuit to arbitrarily set the input of the electric blower. Moreover, it is constructed such that it can be determined at a glance whether it is in an automatic control state using a sensor or a manual control state using an input regulator, by means of a display connected to a switch linked to a switching section for switching between the two.

An embodiment of this invention will be explained based on the drawings.
1 is the vacuum cleaner body. This vacuum cleaner main body 1 is made by detachably connecting an electric case 2 and a dust case 3. A suction port 4 is formed on the front surface of the dust case 3, and a handle 5 and a clamp 6 for the electric case 2 are formed on the top surface. A lid 8 for opening and closing an opening 7 for discarding dust is provided, and a holding part 9 and a filter 10 for selectively holding a dust collection bag (not shown) are provided inside. There is a handle 1 on the top of the electric case 2.
1 is attached so as to be able to rise and fall freely, and an electric blower 12 and a cord reel (not shown) are arranged side by side inside.

Next, FIG. 3 shows an electric circuit. The electric blower 12 and the power control circuit 13 are connected in series and connected to a power source via a cord 14. In addition, remote control switch 15
A remote control circuit 15 is provided which closes the circuit between the power supply and the electric blower 12 and also closes the power supply circuit 16 when the switch a is turned on. Further, a sensor 17, a control circuit 18, a display comparison circuit 19, indicators 20 and 21, and a variable resistor 22 serving as an input regulator are provided, which are maintained in a driving state by receiving power from the power supply circuit 16. . These control circuit 18, power control circuit 13, display comparison circuit 19, and display 20 are connected in sequence. Furthermore, a changeover switch 23 and a switch 24, which are changeover units, are provided. A contact a of one changeover switch 23 is connected to the output side of the sensor 17, and a contact b is connected to the slider 2 of the variable resistor 22.
5, and the movable contact c is connected to the input side of the control circuit 18. The contact a' of the other switch 24 is connected to the display 21, and the movable contact e
is grounded. And the movable contacts c, e
are connected to contact point a or contact point d, respectively, when the slider 25 is operated outside the variable area. As shown in FIG. 2, the slider 25 of the variable resistor 22 has a knob 26 on the top and is attached to the electric case 25.
It is slidably installed at the top of the. Indicators 20 and 21 are also provided on the upper part of the electric case 2. The sensor 17 is arranged at the rear of the electric case 2. Note that the circuit elements are connected by a PC board 27 provided on the top of the electric case 2.

In such a configuration, the remote control switch 15a is turned on to drive the electric blower 12. Now move knob 26 to automatic position A.
When the switch 23 is positioned at , the changeover switch 23 is closed between a and c, and the switch 24 is also closed between d and e. On the other hand, depending on the dust collection condition and type of floor surface, the electric case 2
The amount of air (or wind pressure) flowing through the sensor 17 changes.
detects this state and outputs a control signal. This control signal is input to the power control circuit 13 via the changeover switch 23 and the control circuit 18, and therefore,
The power control circuit 13 increases the input to the electric blower 12 when the air volume is low, and conversely lowers the input when the air volume is large. The magnitude of the input to the electric blower 12, which is automatically varied in this manner, is displayed on the display 20. This automatic control state is also a state in which the switch 24 is turned on, and can be determined even when the user is away from the cleaner body 1 due to the light emitting action of the display 21.

When cleaning a thin sheet, the suction port body comes into close contact with the sheet, so in the automatic control state, the input of the electric blower 12 is increased, and the suction port body comes into closer contact with the sheet. In such a case, the resistance value of the variable resistor 22 is changed by sliding the knob 26 together with the slider 25. In conjunction with this operation, the changeover switch 23 is switched to the ON state between b and c, and the switch 24 is switched to the OFF state. Therefore, the output of the variable resistor 22 is input to the power control circuit 13 via the control circuit 18, and the electric blower 12 is driven with a desired small input to lower the degree of vacuum at the suction port and displace the air above the seat. It is possible to clean without getting it stuck. By adjusting the resistance value of the variable resistor 22 depending on the application, it is possible to arbitrarily set the input to the electric blower 12. This manual control state is determined by the indicator 21 going out when the switch 24 is turned off.

Note that the display 21 may be placed on the upper surface of the knob 26.

Since this device is configured as described above, the input of the electric blower can be automatically changed according to the type of floor surface etc. using the control signal from the sensor, and the input controller can be operated according to the application. The input of the electric blower can be set arbitrarily, and the state of automatic control by a sensor or manual control by an input regulator can be set even from a remote location by a display connected to a switch that switches between them. This has the effect of allowing clear discrimination.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
2 is a perspective view, FIG. 2 is a vertical side view, and FIG. 3 is a block diagram showing an electric circuit. 1...Vacuum cleaner body, 12...Electric blower, 13
... Power control circuit, 21 ... Display device, 22 ... Variable resistor (input regulator), 23 ... Changeover switch (switching section).

Claims (1)

[Scope of utility model registration request] The main body of the vacuum cleaner is provided with an electric blower whose input is controlled and driven by a power control circuit, and the power control circuit includes a sensor that outputs a control signal according to changes in air volume or wind pressure, and an input adjustment that allows the control signal to be changed manually. The vacuum cleaner is characterized in that a switch is provided which is selectively connected to the vacuum cleaner by a switching part and is turned on and off in conjunction with the switching part, and a display connected to the switch is provided on the vacuum cleaner main body. Machine.