JPH0584165A - Vertical vacuum cleaner - Google Patents

Abstract

(57) [Summary] [Purpose] In a vertical vacuum cleaner in which an agitator is driven to rotate by an electric motor, it is an object to stop rotation of the agitator when unnecessary and prevent damage to the carpet fiber. [Structure] A suction tool 8 having an agitator 6 which is rotationally driven by an electric motor 7, and a suction tool 8 which is swingably held,
The main body 1 in which the electric blower 5 and the like are arranged, the suction tool 8 and the main body 1 are connected to each other, and at least the hose 9 detachably connected to the suction tool 8 is provided. When the state is set, the first switch device that opens the rotary drive power supply circuit of the agitator 6 and the second switch device that opens the power supply circuit when the hose 9 is removed from the suction tool 8 are connected in series. It is possible to drive the rotation properly only when necessary.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical vacuum cleaner equipped with an agitator which is driven by a motor to rotate properly.

[0002]

2. Description of the Related Art A conventional vertical vacuum cleaner will be described below. As shown in FIGS. 6 and 7, the main body 1 has a dust collecting chamber 3 for accommodating a paper bag 2 for accumulating dust that has been absorbed in the central portion, a cord winding device 4 and an electric blower 5 above and below the dust collecting chamber 3. Are installed. Below the main body 1, an electric motor 7 that rotationally drives the agitator 6 in the front and the agitator 6 in the rear.
A suction tool 8 having a built-in is pivotally supported by the main body 1 and is rotatably held. The hose 9 connects the agitator chamber 10 in which the agitator 6 is arranged and the dust collection chamber 3, and constitutes a path for transferring the dust collected by the suction tool 8 into the paper bag 2 by the suction airflow of the electric blower 5. It is detachably connected to the suction tool 8. When cleaning a narrow space that cannot be cleaned by the suction tool 8, the hose 9 is removed from the suction tool 8 and the gap suction tool attached to the main body 1 is connected to the tip. Reference numeral 11 denotes a control switch arranged on the upper portion of the main body 1, and the operation and stop operation of the electric blower 5 and the electric motor 7 can be manually performed from the outside (see, for example, Japanese Utility Model Laid-Open No. 2-116247).

In this type of vertical vacuum cleaner, when cleaning a carpet or carpet surface, the agitator 6 is rotated to scrape up the dust that has sunk into the roots of the fibers to improve the dust collecting performance.

[0004]

However, in the above-mentioned conventional configuration, the main body 1 is placed against the cleaning surface when the gap suction tool is used or when another task is done during cleaning. If the operation to stop the operation of the electric motor 7 by operating the control switch 11 is neglected in the upright state, the rotation of the agitator 6 continues and the agitator 6 is kept in the same place.
Had a problem of rotating and damaging the carpet and carpet fibers.

The present invention solves the above-mentioned problems of the prior art, and when the main body is placed almost upright with respect to the cleaning surface,
When using the gap suction tool, the drive power supply circuit of the agitator is automatically opened to prevent continuous rotation of the agitator on the same cleaning surface, prevent damage to the carpet, etc., and improve vertical safety. A type vacuum cleaner is provided.

[0006]

In order to achieve this object, a vertical vacuum cleaner according to the present invention is provided with a suction tool having a built-in agitator which is rotationally driven by an electric motor, and a suction tool which holds the suction tool in a swingable manner. A vacuum cleaner body in which a dust collection chamber, a cord winder and an electric blower are installed, the suction tool and the dust collection chamber are communicated with each other,
At least a hose removably connected to the suction tool is provided, and when the main body is placed substantially upright with respect to the floor surface, the first switch device that opens the power supply circuit for the rotational drive of the agitator and the hose outside the suction tool A second switch device for opening the power feeding circuit is connected and arranged in series, and the second switch device has a conductive plate attached to the tip of the hose on the suction tool side and an elastic plate attached to the conductive plate. The configuration includes a pair of connection terminals that are in contact with and in contact with each other, and further includes a pair of connection terminals that are displaced by being biased by the tip end portion of the hose to make contact.

[0007]

With this configuration, when the main body of the vacuum cleaner stands upright with respect to the cleaning surface, the power supply circuit for driving the agitator is opened by the first switch device.
Also, when an application part for hose connection such as a suction tool for a gap is used, the second switch device eliminates unnecessary rotation of the agitator, and further, the switching of the second switch device is performed only by connecting the hose. It will be possible.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 5 showing an embodiment of the present invention
Then, the same parts as those in the conventional example are designated by the same reference numerals, and the description thereof will be omitted.

(Embodiment 1) As shown in FIGS. 1 to 4, the suction tool 6 comprises an upper suction tool 17 and a lower suction tool 18.
The main body shaft 19 provided at the lower end of the main body 1 is sandwiched, and is swingably coupled to the main body 1 with the main body shaft 19 as a rotation axis.
The agitator 6 is disposed in front of the suction tool 6, and is rotatably held by the lower suction tool 18 in the suction chamber 10 that opens downward. The electric motor 7 that drives the agitator 6 to rotate is
It is sandwiched between the upper suction tool 17 and the lower suction tool 18, and the rotation is transmitted to the agitator 6 by the timing belt 13. The suction passage 14 formed by the upper suction tool 17 and the lower suction tool 18 communicates with the suction tube 15 and the suction chamber 10 which are also sandwiched between the upper suction tool 17 and the lower suction tool 18.

An upper end of the hose 9 is detachably held by the main body 1 and communicates with the dust collecting chamber 3, and a lower end of the hose 9 is detachably connected to the suction tool 6 by fitting and connecting the connecting tube 12 to the suction tool tube 15. And communicates with the suction passage 14. A ring 20 made of a copper alloy is attached to the outer peripheral surface of the tip of the connecting pipe 12.

Reference numeral 16 is a micro switch, and a cam projection 23 formed below the main body shaft 19 has an actuator 21.
To open the power supply circuit to the electric motor 7 in a state where the main body 1 is substantially upright with respect to the floor surface, and the main body 1 is fed to the suction tool 6 in a state where the main body 1 is positioned rearward with respect to the floor surface. Close the circuit.

Reference numeral 22 denotes a pair of connecting terminals fixed to the upper suction tool 17 and the lower suction tool 18 so as to elastically contact the ring 20.
When the connection pipe 12 is inserted into the suction pipe 15, the pair of connection terminals 22 are brought into conduction through the ring 20 and the power supply circuit to the electric motor 7 is closed, and the connection pipe 12 is removed from the suction pipe 15. When removed, the pair of connection terminals 22 are brought into a non-conducting state to open the power feeding circuit. The micro switch 16 is connected in series with the pair of connection terminals 22.

Reference numeral 24 is a handle held by the main body 1. Regarding the vertical vacuum cleaner configured as described above,
The operation will be described below.

When using the vertical vacuum cleaner, the handle 1 is held and the main body 1 is tilted rearward with respect to the suction tool 6 for use. When cleaning the carpet or carpet surface, the main body switch device 11 is operated to bring the electric motor 7 into an operating state and the agitator 6 is rotationally driven. At this time, since the connecting pipe 12 is connected and inserted into the suction pipe 15, and the cam projection 23 does not displace the actuator 21, the power supply circuit to the electric motor 7 is in a closed state, and the electric motor 7 is in operation. continue. In this state, when the main body 1 is made to stand upright with respect to the floor surface in order to perform an operation other than operating the main body 1 such as organizing the surroundings, the cam projection 23
Displaces the actuator 21, the microswitch 16 opens the power supply circuit to the electric motor 7, and the operation of the electric motor 7 is stopped. Therefore, the rotation of the agitator 6 also stops,
It is possible to prevent the fibers of the carpet and the carpet from being damaged by the continuous rotation of the agitator 6 at the same position.

When using accessories such as a suction tool for gaps,
When connecting the accessories to the connecting pipe 12 of the hose 9, the connecting pipe 1
When 2 is removed from the suction pipe 15, the conduction between the pair of connection terminals 22 via the ring-shaped conductive plate 20 is cut off, the power supply circuit to the electric motor 7 is opened, and the rotation of the agitator 6 is stopped. In the same manner as described above, it is possible to prevent damage to the fibers of the carpet or carpet without turning off the switch device 11. Especially, the cleaning using the accessory is easy to carry out by holding the handle 24 with the hand opposite to the hand holding the accessory casually and tilting the main body 1 with respect to the suction tool 6, and the first switch that opens in the upright state is used. Since the rotation of the agitator 6 can be stopped without depending on it, the usability is improved, and a person other than the user of the vacuum cleaner, for example, the agitator 6 which is rotating without being noticed by an infant touches the agitator 6 with fingers. You will not be hurt.

Further, in the configuration of the second switch device,
The cost is low because only the pair of connection terminals 22 and the ring-shaped conductive plate 20 are used.

(Second Embodiment) A second embodiment of the present invention will be described below.

As shown in FIG. 5, the connection terminal A25 and the connection terminal B26 are held by the lower suction tool 18, and when the connection tube 12 is connected and inserted into the suction tool tube 15, the outer peripheral surface of the distal end portion of the connection tube 12 is connected. The connection terminal A25 is displaced downward by being pressed by and is brought into contact with the connection terminal B26 to close the power supply circuit to the electric motor 7. When the connecting tube 12 is removed from the suction tool tube 15, the connection terminal A25 returns to the inside of the suction tool tube 15 and is displaced, the contact between the connection terminal A25 and the connection terminal B26 is lost, and the power supply circuit is opened.

As described above, the operation of the second embodiment is the same as that of the first embodiment, and the cost can be further reduced by eliminating the ring 20 in the structure.

[0020]

As is apparent from the above description of the embodiments, the present invention is directed to a suction device having an agitator which is rotationally driven by an electric motor, and a dust collection chamber which holds the suction device so as to be swingable. The main body provided with the cord winder and the electric blower, the suction tool and the dust collecting chamber communicated with each other, and at least the hose detachably connected to the suction tool was provided, and the main body was placed almost upright on the floor surface. At this time, the first switching device that opens the power supply circuit for rotational drive of the agitator and the second switching device that opens the power supply circuit when the hose is removed from the suction tool are connected in series, and the main body is cleaned. When it is almost upright, or when using a suction tool for a gap, it automatically opens the power supply circuit for driving the agitator to eliminate continuous rotation of the agitator on the same cleaning surface, so that carpets and carpets It is possible to prevent damage to the Wei and in which safety can be realized an excellent vertical electric vacuum cleaner with improved.

[Brief description of drawings]

FIG. 1 is a schematic front view showing the concept of a vertical vacuum cleaner according to first and second embodiments of the present invention.

FIG. 2 is a sectional view of an essential part showing the concept of a first switch device of the vertical electric vacuum cleaner.

FIG. 3 is an electric circuit diagram of the vertical vacuum cleaner.

FIG. 4 is a second vertical vacuum cleaner according to the first embodiment of the present invention.
Sectional view showing the concept of the switch device

FIG. 5 is a sectional view of an essential part showing the concept of a second switch device of a vertical vacuum cleaner according to a second embodiment of the present invention.

FIG. 6 is a schematic front view showing the concept of a conventional vertical vacuum cleaner.

FIG. 7 is a schematic side view showing the concept of the vertical vacuum cleaner.

[Explanation of symbols]

 6 Agitator 7 Electric motor 9 Hose 12 Connection pipe 14 Suction tool pipe 20 Ring-shaped conductive plate 22 Connection terminal 25 Connection terminal A 26 Connection terminal B

Claims (3)

[Claims] 1. A suction tool having a built-in agitator which is rotationally driven by an electric motor, and a cleaner body which holds the suction tool swingably and has a dust collecting chamber, a cord winder and an electric blower therein. What is claimed is: 1.A vertical electric vacuum cleaner comprising a hose communicating with the suction tool and the dust collecting chamber and at least detachably connected to the suction tool, wherein the cleaner body is substantially upright with respect to a floor surface. A first switch device that opens a power supply circuit for rotary drive of the agitator and a second switch device that opens a power supply circuit for rotary drive when the hose is removed from the suction tool are connected in series. Vertical vacuum cleaner. 2. The vertical switch according to claim 1, wherein the second switch device includes a conductive plate attached to the tip of the hose on the suction tool side, and a pair of connection terminals that elastically contact the conductive plate. Type vacuum cleaner. 3. The vertical vacuum cleaner according to claim 1, wherein the second switch device is provided with a pair of connection terminals that are urged by the tip of the suction-side hose to be displaced and contacted.