JPH0344130Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The invention relates to a vacuum cleaner, in which the speed of the electric blower and the suction opening body are controlled by a hand-held control operator provided on the grip of the suction hose. The invention relates to a rotating brush and a rotating brush.

(Prior Art) In a conventional vacuum cleaner in which the speed of an electric blower installed in the vacuum cleaner body and the rotating brush driven by an electric motor in the suction port can be controlled using the grip part of the hose, the system shown in FIG. As shown, a variable resistor control operator 3 is provided on a grip portion 2 of a hose 1 to vary the resistance value of the variable resistor by sliding, rotating or pressing, and to control input to the electric blower. A display section 4 for displaying the speed control state of the electric blower and the control state of the rotating brush is formed in the section 2, and the control operator 3 is positioned at the position where the input to the electric blower is maximum (in the drawing, The switch that controls the rotating brush of the suction port body is turned on when the device reaches position 4 (indication 4) of "Tan Power Brush".

(Problems to be Solved by the Invention) In the above-mentioned conventional vacuum cleaner in which the display part 4 is formed on the grip part 2 of the hose 1, it is possible to check whether the rotating brush is rotating or not, and to what position the control operator is moved. If you are not careful, you may end up causing the rotating brush to rotate when it is not needed, which is very dangerous. It was hot. Of course, when the rotating brush rotates, noise is generated from the electric motor that drives this rotating brush, but the noise from the electric blower in the vacuum cleaner itself is louder, so it is difficult to determine whether the rotating brush is rotating by the sound. It is difficult.

This invention was developed in view of the above problems, and allows you to check whether the rotating brush is rotating without checking the display every time, and how far the control operator should be moved to start rotating the rotating brush. To provide a highly safe electric vacuum cleaner that can easily check whether the rotating brush is rotating or not and prevents the rotating brush from rotating unnecessarily.

[Structure of the idea]

(Means for Solving the Problems) The vacuum cleaner of the present invention has an electric blower and a control circuit for controlling the speed of the electric blower built into the vacuum cleaner body, and has one end connected to the suction port of the vacuum cleaner body. to the suction port which is removably connected to the other end of the hose via an extension tube etc.
A rotating brush driven by an electric motor is provided, and the grip portion of the hose is provided with a control portion that outputs a speed control signal to the control circuit and a switch that controls on/off the electric motor. A control operator is provided that moves in the longitudinal direction of the grip portion and changes the speed control signal output from the control unit, and the switch is turned on and off in conjunction with the movement of the control operator. A protrusion is provided near the side of the position where the switch is turned on.

(Function) In the vacuum cleaner of the present invention, when the control unit is adjusted using the control operator on the hose grip, the electric blower is driven at a speed controlled by the control unit, and the control operator is placed in a predetermined position. When the switch is turned on, the rotating brush is driven by the electric motor of the suction port body. A device that allows you to easily check with your fingertips whether the rotating brush is rotating or not, and how far the control operator must be moved to start rotating the rotating brush, without having to check with your eyes each time. It is.

(Embodiment) The configuration of an embodiment of the present invention will be explained with reference to FIGS. 1 to 5.

In FIG. 1, reference numeral 10 denotes a vacuum cleaner main body, which includes an electric blower 11 and a control circuit 12 for controlling the speed of the electric blower 11.
A dust collection case 13, in which a dust collection filter is removably attached, is removably attached to the front part of 0.
A suction port 15 to which a suction hose 14 is detachably inserted and connected is opened at the front of the dust collection case 13.

A connecting pipe portion 16 is provided at the base end of the hose 14 and is connected to the suction port 15 by insertion, and a pair of connectors (not shown) provided adjacent to the suction port 15 are connected to the connecting pipe portion 16. A pair of connection plugs 17 and 18 are provided which are electrically connected to each other. Also, an extension pipe 19 is attached to the tip of this hose 14.
A grip part 20 is integrally provided, one end of which is inserted and connected in a removable manner, and this grip part 20 has a connector electrically connected to one of the connection plugs 17 via a conductive wire inside the hose 14. 21 are provided.

The extension tube 19 is provided with an electric wire 22, and a connecting plug 23 and a connector 24, which are electrically connected to both ends of the electric wire 22, are provided at one end and the other end. The connection plug 23 is electrically connected to the connector 21 of the grip portion 20 or the connector 24 of another extension tube 24.

26 is a suction port body, with a dust suction port (not shown) on the bottom surface.
is formed with an opening, and a connecting pipe 27 that communicates with this dust suction port and is removably inserted and connected to the other end of the extension pipe 19 is provided at the rear part. Connector 2 of tube 19
A connection plug 28 electrically connected to 1 is provided. Moreover, inside the suction port body 26,
As shown in FIG. 4, a rotating brush 29 is rotatably supported facing the dust suction port, and
An electric motor 30 that rotationally drives this rotating brush 29 is provided. That is, a belt 34 for power transmission is stretched around a pulley 32 fixed to the rotating shaft 31 of the electric motor 30 and a pulley 33 fixed to the rotating brush 29. Furthermore, the electric motor 30 and the connecting plug 28 of the connecting pipe 27 are electrically connected via a conductor 35.

As shown in FIG. 2, a guide groove 41 is formed in the grip portion 20 of the hose 14 along the longitudinal direction of the grip portion 20. As shown in FIG. A control operator 42 is slidably provided in this guide groove 41 . Further, a guide groove 41 serving as a movement area of the control operator 42
A display 43 for displaying control details of the electric blower 11 is formed on the grip portion 20 along. This display 43 includes, for example, "Jiyutan Power Brush", "Jiyutan", "Fatami", "Sofa", "
A character display 44 such as "Curtain" or "Cut" is formed. This display 44 is the control operator 42
The display corresponds to the speed of the electric blower 11 adjusted according to the position of the electric blower 11. Projections 45 are formed near both sides of the guide groove 41 at the front end of the movement range of the control operator 42, that is, at the position where the "Jiyutan Power Brush" display 44a is located.

As shown in FIG. 3, the control operator 42 has a sliding piece 46 that is slidably inserted into the guide groove 41 and protrudes from the lower surface.
The lower end of the controller storage chamber 4 inside the grip portion 20
7, the slider 4 of the variable resistor 48 serves as a control section that outputs a speed control signal to the control circuit 12.
9, and the movement of this slider 40 changes the resistance value of the variable resistor 48, thereby changing the speed control signal. The variable resistor 48 is electrically connected to the connecting plug 17 of the connecting pipe portion 16 of the hose 14 via a conductor inside the hose 14. Further, the variable resistor 4
A normally open micro switch 50 that turns on and off the electric motor 30 in the suction port body 26 is disposed in the control unit storage chamber 47 and located in front of the control unit 8 . A rod-shaped projection 52 is formed on the movable piece 46 to press the operator 51 of the micro switch 50 to turn on the switch 50 when the control operator 42 is located at the frontmost end. Of the two terminals of the micro switch 50, one is connected to the connection plug 18 of the connection pipe portion 16 of the hose 14 via the conductor inside the hose 14.
The other is electrically connected to the grip portion 2.
It is electrically connected to the connector 21 of this grip part 20 via an electric wire 53 provided outside of the grip part 20.

Next, the electric circuit of the control circuit 12 will be explained with reference to FIG.

The electric blower 11 and a bidirectional thyristor 62 are connected in series to an AC power source 61, and a protective resistor 6 is connected in parallel with the bidirectional thyristor 62.
3 and a capacitor 64 are connected in series.
Further, a connection point between diodes 66 and 67 of the control circuit 12 is connected to the gate of the bidirectional thyristor 62, and these diodes 66 and 67 are connected to a full-wave rectifier circuit 69 connected to the AC power source 61 via a resistor 68. It is connected. This rectifier circuit 69 is composed of diodes 70, 71, 72, and 73, and this rectifier circuit 69 includes a resistor 74 and a Zener diode 7.
A constant voltage circuit 76 consisting of 5 is connected.

Further, the control circuit 12 is connected to the rectifier circuit 69 via a safety resistor 77 and a series-connected variable resistor 48 which serves as a control unit provided in the hose 14 and a switch 78 built into the variable resistor 48. has been done. This control circuit 12 has a capacitor 80 connected to the switch 78 of the control section via a safety resistor 79, a resistor 77, a variable resistor 48,
A time constant circuit 81 is formed by the resistor 79 and the capacitor 80, and the resistor 79 of this time constant circuit 81
The anode of PUT 82 is connected to the connection point between and capacitor 80 . Further, at the gate of this PUT 82, a resistor 8 is connected in series to the connection point between the resistor 74 of the constant voltage circuit 76 and the Zener diode 75.
3,84 connection points are connected. Also mentioned above
The gate of a thyristor 86 is connected to the cathode of the PUT 82 via a resistor 85, and this thyristor 86 is connected to the rectifier circuit 69 via a resistor 87. is connected. Furthermore, a resistor 88 is connected to the cathode side of this thyristor 86.
is connected. In addition, the diodes 66, 6
The connection point with 7 is connected to the anode of the bidirectional thyristor 62 via a resistor 89.

Next, the operation of this embodiment will be explained.

When cleaning by gripping the grip 20 of the hose 14 connected to the vacuum cleaner main body 10, move the control operator 42 along the guide groove 41 depending on the area to be cleaned, such as a rug, tatami mat, sofa, curtain, etc. When the slider 49 of the variable resistor 48 is moved, the slider 49 of the variable resistor 48
2, the resistance value of the variable resistor 48 is changed, the speed control signal input to the control circuit 12 is changed, and the speed of the electric blower 11 is adjusted and controlled. Furthermore, when the control operator 42 reaches the front end of its movement range, the rod-shaped protrusion 52 provided on the sliding piece 46 of the control operator 42 is connected to the microcontroller disposed in front of the variable resistor 48. switch 50
Press the operator 51 to turn on the micro switch 50. Then, the electric motor in the suction port body 26 is connected from the power supply circuit in the vacuum cleaner body 10 to the conductor in the hose 14, the electric wire 53 provided outside the grip part 20, and the electric wire 22 provided in the extension tube 19. Electric power is supplied to the motor 30, and the electric motor 30 generates rotational force. And this rotational force is the belt 3
4 to the rotating brush 29, which rotates, and this rotating rotating brush 29 scrapes up dust from the carpet and the like. Further, when the control operator 42 is at the front end of its movement range, that is, at a position other than the "Jiyutan Power Brush" display 44a, the micro switch 50 is in the OFF state and the rotating brush 29 does not rotate. Note that the circuit diagram in FIG. 5 does not show the above-mentioned power supply circuit.

Further, when operating the control operator 42, the control operator 42 is connected to a micro switch 50 disposed at the front end of its movement range, that is, inside the grip portion 20.
When the control operator 42 reaches the position where it is turned on,
If your finger touches the protrusion 45 provided near the side of the body, you can check whether the rotating brush 29 of the suction port body 26 is rotating or not, and how far the control operator 42 should be moved, without checking visually. It can be easily confirmed whether the rotating brush 29 starts to rotate. In other words, it is difficult to visually confirm the display 44 because it is close at hand and small, and it is also difficult to confirm aurally because the noise of the electric motor 30 of the suction port body 26 is masked by the noise of the electric blower 11. Whether or not the rotating brush 29 is rotating can be confirmed reliably and easily by feeling with the fingertips. Furthermore, the presence of the protrusion 45 allows the micro switch 5 for the rotating brush 29 to be
Since the movement of the finger operating the control operator 42 is restricted so that 0 does not easily turn on, it is possible to prevent the rotating brush 29 from being erroneously transferred.

Next, the operation of the control circuit 12 will be explained.

When the switch 78 built into the variable resistor 48 is turned on by operating the control operator 42 of the grip part 20 of the hose 14, the AC power supply 61 is full-wave rectified by the rectifier circuit 69, and the voltage is made constant by the Zener diode 75. The voltage applied to the capacitor 80 is applied to the capacitor 80 with the charging amount controlled by the safety resistor 77, the variable resistor 48, and the safety resistor 79, and the capacitor 80 is charged. When the voltage across the capacitor 80 reaches the reference voltage set by the resistors 83 and 84, the PUT 82 turns on and the charge in the capacitor 80 is discharged from the anode to the cathode of the PUT 82.
A trigger current flows from the cathode of No. 2 to the gate of the thyristor 86, and the thyristor 86 is turned on. When the thyristor 86 turns on, current flows from the rectifier circuit 69 to the resistor 87 and the thyristor 86, and from the electric blower 11 and the first anode of the bidirectional thyristor 62 to the gate and the diode 6.
6. Current flows through the resistor 87, the thyristor 86, and the diode 71 of the rectifier circuit 69. When the polarity of the AC power supply 61 is reversed, current flows through the diode 70 of the rectifier circuit 69, the resistor 87, the anode of the thyristor 86, the diode 67, and the second anode of the bidirectional thyristor 62, and the bidirectional thyristor 6
2 is turned on reliably even if the current state is oscillating, and the current continues to flow until the terminal voltage drops, so the bidirectional thyristor 62 is reliably triggered even if the electric blower 11 is an inductive load.

and the control operator 4 of the grip portion 20 of the hose 14.
When the resistance value of the variable resistor 48 changes by the operation 2, the charging cycle of the capacitor 80 changes as a speed control signal, the turn-on timing of the PUT 82 changes, and the speed of the electric blower 11 changes.

Next, another embodiment of the present invention will be described with reference to FIGS. 6 to 8.

In this embodiment, the protrusions 45 provided near both sides of the guide groove 41 extend along the guide groove 41 from the position of the display 44a of "Jiyutan Power Brush" to the position of the display 44b of "Jiyutan". It is now movable. That is, sliding grooves 91 are formed along the guide grooves 41, and sliding body storage portions 92 are provided below these sliding grooves 91.
are formed, and sliding bodies 93 are slidably supported within these sliding body housing portions 92, and protrusions 45 formed projectingly on the upper surfaces of these sliding bodies 93 are projected upwardly from the sliding grooves 91. ing. A pair of engagement recesses 94 are provided on the lower surface of the sliding body 93.
is formed, and the sliding body storage portion 9
2, the sliding body 93 is releasably engaged with the engaging recess 94 so that its protrusion 45 is next to the "Jiyutan Power Brush" display 44a or the "Jiyutan" display 44b. An engaging protrusion 95 is formed to maintain the position.

If the rotating brush 29 is used during cleaning, the protrusion 45 is positioned next to the "Jiyutan Power Brush" display 44a, but if the rotating brush 29 is not used, the protrusion 45 is placed next to the display 44a. It is advisable to move it to the side of the display 44b of "Jiyu-tan". By doing so, when the control operator 42 is moved to the display 44b of "JIUUTAN", the finger will touch the protrusion 45, and if the control operator 42 is moved further, the rotating brush 29 will start rotating.
Since the movement of the finger operating the brush 2 is also regulated by the protrusion 45, the rotating brush 29 will not be rotated inadvertently.

[Effect of idea]

According to the present invention, a control operator that moves in the longitudinal direction of the grip part of the hose and changes the speed control signal output from the control part is provided, and the movement of the control operator causes the rotation of the suction port body. In a vacuum cleaner in which the on/off switch for controlling the brushes is linked, a protrusion is provided near the side where the switch of the control operator is turned on. You can easily check with your fingertips whether the brush is rotating or not, and how far you have to move the control to make the rotating brush start rotating, which prevents you from rotating the rotating brush when it is not necessary. It is very safe.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a vacuum cleaner showing an embodiment of the present invention, Fig. 2 is a perspective view of the grip of the same hose;
Fig. 3 is a vertical cross-sectional view of the grip part, Fig. 4 is a perspective view of the inside of the suction port body, Fig. 5 is an electrical circuit diagram of the above,
FIG. 6 is a perspective view of a grip portion of a hose showing another embodiment of the present invention, and FIG. 7 is a longitudinal cross-sectional view of the vicinity of the same protrusion.
FIG. 8 is a cross-sectional view of the vicinity of the same protrusion as above, and FIG. 9 is a perspective view of a grip portion of a hose showing an example of a conventional vacuum cleaner. 10...Vacuum cleaner body, 11...Electric blower, 1
2...Control circuit, 14...Hose, 15...Suction port, 20...Grip portion, 26...Suction port body, 29...
... Rotating brush, 30 ... Electric motor, 42 ... Control operator, 45 ... Protrusion, 48 ... Variable resistor of control section, 50 ... Switch.

Claims (1)

[Claims for Utility Model Registration] (1) A vacuum cleaner body incorporating an electric blower and a control circuit for controlling the speed of the electric blower, a suction port body having a rotating brush driven by an electric motor, and the vacuum cleaner body one end of which is removably connected to the suction port of the motor, and the suction port body is removably connected to the other end of the handle, and a control section that outputs a speed control signal to the control circuit, and a control section that outputs a speed control signal to the control circuit; a hose having a switch for turning off the hose; a control operator is provided on the grip of the hose that moves in the longitudinal direction of the grip to change the speed control signal output from the control unit; A vacuum cleaner, wherein the switch is turned on and off depending on the position, and a protrusion is provided on the side of the control operator near the position where the switch is turned on. (2) The vacuum cleaner according to claim 1, wherein the protrusion is movable along the moving direction of the control operator.