JPH0759682A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To provide a vacuum cleaner which can prevent occurrence of such a risk that an obstacle over which the cleaner runs during cleaning, and does not require any complicated manipulation when the vacuum cleaner is moved during cleaning. CONSTITUTION:A suck-up nozzle 35 having a rotary brush 20 is provided in front of a castor 19. A motor for driving the rotary brush 20 is provided in rear of the castor 19. An arm 25 is provided to an arm plate 27 so as to be vertically turnable. An arm base 29 is attached to the upper surface of the arm 25. A ring 32 is provided on the lower side of the arm base 29 so as to be vertically turnable. The front end of the ring 32 abuts against the lower surface of the arm base 25, and the rear end thereof is locked to a flexible wire 31. A microswitch 51 for stopping the rotation of the motor is attached to the side surface of the link base 30.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric vacuum cleaner, and more particularly, to a cleaner body, a suction tool having a rotating brush which is connected to the cleaner body, and rotationally drives the rotating brush. The present invention relates to an electric vacuum cleaner that is equipped with a motor and is mainly used for business purposes.

[0002]

2. Description of the Related Art Conventionally, an electric vacuum cleaner equipped with a cleaner body, a suction tool connected to the cleaner body and having a rotating brush, and a motor for rotationally driving the rotating brush is used during cleaning. If there is a low obstacle in front of,
It is necessary to raise the rotating brush of the suction tool to get over the obstacle. At that time, if the rotating brush is rotating, the rotating brush may damage an obstacle. Further, if the electric vacuum cleaner is to be transported during cleaning, it is necessary to turn off the switch of the rotary brush drive motor to stop the rotation of the rotary brush, which is a troublesome operation.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to prevent the risk of damaging an obstacle overcoming during cleaning, and further, to prevent the obstacle from being damaged during cleaning. An object of the present invention is to provide an electric vacuum cleaner that does not require a troublesome operation when carrying it.

[0004]

SUMMARY OF THE INVENTION An electric vacuum cleaner according to the present invention has a cleaner body, a suction tool which is connected to the cleaner body so as to be able to rise and descend, and which has a rotating brush, and rotationally drives the rotating brush. A motor and a suction tool lifting mechanism that raises and lowers the suction tool with respect to the cleaner body are provided.
Switch means for detecting the upward movement of the suction tool and stopping the rotation of the motor is provided.

[0005]

Here, the suction tool is provided, for example, at the lower front part of the cleaner body via the compression coil spring. Further, the cleaner body and the suction tool are connected, for example, via a dust suction hose. The motor that drives the rotating brush to rotate is, for example,
It is provided at the rear part of the suction tool on the lower surface of the cleaner body. The rotation of the motor is transmitted to the rotating brush via, for example, a transmission belt. The suction tool elevating / lowering mechanism portion is provided, for example, at a location behind the suction tool on the lower surface of the cleaner body.

As the switch means, for example, a micro switch for cutting off the power source of the rotary brush driving motor is provided in the suction tool elevating mechanism. Such a switch means detects the upward movement of the suction tool when the suction tool elevating mechanism raises the suction tool, and then stops the rotation of the rotary brush drive motor.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Two embodiments of the present invention will be described in detail below with reference to the drawings. The present invention is not limited to these.

Embodiment 1 In FIGS. 7 to 10, reference numeral 1 is a cleaner body having an electric blower and a dust collecting chamber. The cleaner body 1 is fixed to the upper surface of the upper chassis 2. A dust suction hose 3 is detachably attached to the front of the cleaner body 1.

The upper chassis 2 is covered with an upper cover 4. A substantially ∩-shaped handle 5 extending obliquely rearward from the upper chassis 2 is attached to a rear portion of the upper chassis 2. A switch case 9 equipped with a cleaner body switch 6, a rotary brush switch 7 and a cord automatic winding device switch 8 is provided above the handle 5. The power supply cord 10 of the cleaner body 1 is detachably connected to the lower surface of the switch case 9.

A basket 11 for accommodating a cleaning tool (not shown) is provided at the center of the inside of the handle 5.
Below the upper chassis 2, an automatic cord winding device 13 for automatically winding the power cord 12 to a required length is provided. A power plug 1 is provided near the tip of the power cord 12.
A weight 15 is attached so that tension is not applied to 4.

As shown in FIGS. 1 to 4, a lower chassis 16 is provided below the automatic cord winding device 13.
The outside of the lower chassis 16 is covered with a lower cover 17. Wheels 18 are provided at the rear portion and casters 19 are provided at the front portion on the lower surface of the lower chassis 16. A suction device 35 having a rotating brush 20 is provided in front of the casters 19.

The suction device 35 of the lower surface of the lower chassis 16
A motor 21 that rotationally drives the rotary brush 20 is attached to a rear portion of the. The rotation of the motor 21 is transmitted to the rotating brush 20 via the transmission belt 22. The transmission belt 22 is covered with a belt cover 23 as shown in FIGS. 7 and 10.

The suction device 35 is attached to the arm plate 27. And the suction tool 35 is the arm plate 2
It is integrated with 7. An arm 25 is attached to the arm plate 27 so as to be vertically rotatable as one component of a suction tool elevating mechanism section that raises and lowers the suction tool 35. That is, the arm 25 is vertically rotatably attached to the side surface of the caster base 24 to which the caster 19 is attached. The arm plate 27 is pivotally supported at one rear position so as to be positioned at the tip (front end) of the arm 25, and is vertically slidably attached to the elongated hole 26 of the arm 25 at one front position. .

Reference numeral 28 is a compression type coil spring for pressing the suction tool 35 against the floor surface. That is, the coil spring 2
8, the upper end is fixed to the lower chassis 16 and the lower end is fixed to the suction tool 35, and is constantly urged vertically downward. The arm 25, the arm plate 27 and the coil spring 28 are
It is a pair of left and right configurations. With the arm 25 and the arm plate 27, the suction tool 35 can deal with unevenness of the floor surface.

An arm base 29 is attached to the upper surface of the arm 25 as one component of the suction tool elevating mechanism. Further, below the arm base 29, a link 32 is provided as one component of the suction tool lifting mechanism section. The link 32 is pivotally supported by a link base 30 protruding vertically downward from the lower surface of the lower chassis 16 so as to be vertically rotatable. The front end of the link 32 contacts the lower surface of the arm base 29, and the rear end of the link 32 is locked to the front end of the flexible wire 31 as one component of the suction tool elevating mechanism. As shown in FIGS. 5 and 6, the rear end of the flexible wire 31 is locked to a clamp 33 provided on the handle 5 as one component of the suction tool elevating mechanism section.

When the clamp 33 is pulled up from the state shown in FIG. 5 to the state shown in FIG. 6, the flexible wire 31 is pulled upward and the link 32 is rotated upward from the state shown in FIG. 1 to the state shown in FIG. Push 29 up. As a result, the arm 25 rotates upward and the suction tool 35 is lifted. Such a mechanism is used when the electric vacuum cleaner is transported.

When lowering the suction tool 35, the clamp 33
Is pushed down from the state of FIG. 6 to the state of FIG. Then,
The flexible wire 31 is loosened, and the suction tool 35 is pressed against the floor surface by the biasing force of the coil spring 28.

In FIG. 1 and FIG. 2, the link base 3
On the side surface of 0, a micro switch 51 as a switch means for stopping the rotation of the motor 21 is attached. The micro switch 51 is pushed by the rear end of the link 32 that is rotated downward when the suction tool 35 is brought into contact with the floor surface to be turned on (FIG. 1), and the motor 21 is rotated to rotate the rotary brush 20. To rotate. In addition, the micro switch 51 is turned off when the rear end of the link 32 that is rotated upward when the suction tool 35 is lifted from the floor surface is separated (FIG. 2), and the rotation of the motor 21 is stopped to rotate the rotary brush 20. To stop the rotation of.

Since the electric vacuum cleaner according to the first embodiment is configured as described above, it is possible to lift the suction tool 35 and stop the rotation of the rotary brush 20 by pulling up the clamp 33 during cleaning. Become. Therefore, according to this electric vacuum cleaner, it is possible to prevent the suction tool 35 from damaging an obstacle over which the vacuum cleaner 35 gets over during cleaning, and moreover, when carrying the electric vacuum cleaner during cleaning, it is a troublesome work as in the past. It does not require any special operation.

Embodiment 2 In FIGS. 11 to 13, reference numeral 52 denotes one structure of a suction tool elevating mechanism section for connecting the link 32 and a substantially L-shaped pedal base 53 as one component of the suction tool elevating mechanism section. It is a horizontal connecting rod as an element. The pedal base 53 has a pedal 54 at the rear end as one component of the suction tool lifting mechanism.
Is mounted, and the front end is pivotally supported on the pedal frame 55 so as to be vertically rotatable.

In the state shown in FIG. 11 (at this time, the suction device 35
Is in contact with the floor) When the pedal 54 is depressed,
As shown in FIG. 12, the connecting rod 52 horizontally moves rearward, and the front portion of the link 32 is rotated upward. Then, the arm base 29 is pushed up, the arm 25 is rotated upward, and the suction tool 35 is lifted.

Reference numeral 56 is a latch for locking the pedal base 53 when the pedal 54 is depressed. Reference numeral 57 is a tension type coil spring as one component of the suction tool elevating mechanism section. The coil spring 57 is stepped on and then, as shown in FIG.
This is for returning the pedal 54 in the state of to the state of FIG.

Since the structure of the other parts of the electric vacuum cleaner according to the second embodiment is the same as that of the first embodiment, only the same reference numerals as those of the first embodiment are attached and detailed description thereof is omitted.

Since the electric vacuum cleaner according to the second embodiment is configured as described above, it is possible to lift the suction tool 35 and stop the rotation of the rotary brush 20 by stepping on the pedal 54 during cleaning. Become. Therefore, according to this electric vacuum cleaner, it is possible to prevent the suction tool 35 from damaging an obstacle over which the suction tool 35 gets over during cleaning.
Moreover, when carrying the electric vacuum cleaner during cleaning, it is not necessary to perform a troublesome operation as in the past.

Vacuum cleaner according to Example 1 and Example 2
The pair of left and right compression type coil springs 28 in the electric vacuum cleaner according to the present invention are used to press the suction tool 35 against the floor surface as shown in FIG. 14, and further serve as a cushioning member corresponding to the unevenness of the floor surface. It also has the function of. Therefore, in the electric vacuum cleaner according to the first embodiment and the electric vacuum cleaner according to the second embodiment, it is not necessary to provide such a cushioning member as another member at another location, which saves the material cost and simplifies the configuration. It is also possible to realize the simplification and the assembling work.

[0026]

EFFECT OF THE INVENTION Since the electric vacuum cleaner according to the present invention is constructed as described above, it is possible to prevent the obstacle overcoming during the cleaning from being damaged, and moreover, when the vacuum cleaner is intended to be transported during the cleaning. No need for troublesome operations.

[Brief description of drawings]

FIG. 1 is an enlarged side sectional view of a main part of an electric vacuum cleaner according to a first embodiment of the present invention (when a suction tool is in contact with a floor surface).

FIG. 2 is an enlarged side sectional view of a main part of the vacuum cleaner (when the suction tool is lifted).

FIG. 3 is a side sectional view of a main part of the electric vacuum cleaner (when the suction tool is in contact with the floor surface).

FIG. 4 is a side sectional view of a main part of the electric vacuum cleaner (when the suction tool is lifted).

FIG. 5 is a side view of the clamp portion of the electric vacuum cleaner (when the suction tool is in contact with the floor surface).

FIG. 6 is a side view of the clamp portion of the electric vacuum cleaner (when the suction tool is raised).

FIG. 7 is an overall side view of the electric vacuum cleaner.

FIG. 8 is an overall top view of the electric vacuum cleaner.

FIG. 9 is an overall front view of the electric vacuum cleaner.

FIG. 10 is a rear view of the main body of the electric vacuum cleaner.

FIG. 11 is a side sectional view of a main part of the electric vacuum cleaner according to the second embodiment of the present invention (when the suction tool is in contact with the floor surface).

FIG. 12 is a side sectional view of a main part of the vacuum cleaner (when the suction tool is lifted).

FIG. 13 is an overall rear view of the electric vacuum cleaner.

FIG. 14 is an enlarged front sectional view of the vacuum cleaner according to the first and second embodiments of the present invention (when the suction tool is in contact with the floor surface).

[Explanation of symbols]

 1 Vacuum Cleaner Main Body 20 Rotating Brush 21 Motor for Driving Rotating Brush 25 Arm (Suction Tool Lifting Mechanism) 29 Arm Base (Suction Tool Lifting Mechanism) 31 Flexible Wire (Suction Tool Lifting Mechanism) 32 Link (Suction Tool Lifting Mechanism) ) 33 Clamp (suction tool lifting mechanism section) 35 Suction tool 51 Micro switch (switch means) 52 Connecting rod (Suction tool lifting mechanism section) 53 Pedal base (Suction tool lifting mechanism section) 54 Pedal (Suction tool lifting mechanism section) 57 Coil spring (suction tool lifting mechanism)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kenmei Tanaka 2-18 Keihan Hondori, Moriguchi City, Osaka Sanyo Electric Co., Ltd. (72) Inventor Hiroyasu Ishihara 2-18 Keiyo Hondori, Moriguchi City, Osaka Sanyo Denki Within the corporation

Claims (1)

[Claims] 1. A vacuum cleaner body and a vacuum cleaner body,
A suction tool that is connected so as to be capable of descending and that has a rotating brush, a motor that rotationally drives the rotating brush, and a suction tool elevating mechanism that raises and lowers the suction tool with respect to the cleaner body,
Furthermore, the electric vacuum cleaner provided with switch means for detecting the upward movement of the suction tool and stopping the rotation of the motor.