JPH0767815A - Vacuum cleaner - Google Patents

Abstract

PURPOSE:To provide the vacuum cleaner which is satisfactory in the suction efficiency of dust, and also, can move smoothly forward and backward a suction case. CONSTITUTION:When the cleaner main body is driven, air is blown out of a blow-out nozzle 18 in a suction case 2 and blown to the floor surface 26. By blowing force of this blown air, dust on the floor surface of a mat and a carpet, etc., is whirled into the suction case 2, and also, the whirled dust is sucked into the cleaner main body together with air by suction force of the cleaner main body operated on a suction chamber 19 of the suction case through a suction pipe 3. Also, by blowing the air to the floor surface from a blowout nozzle, adsorption force to the floor surface of the suction case is weakened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum cleaner used for cleaning a floor surface of a tatami mat, a carpet or the like in a general household.

[0002]

2. Description of the Related Art Conventionally, an electric vacuum cleaner used at home generally has a suction port and a discharge port, and a suction fan rotatably driven by a built-in drive motor causes dust to come from the suction port. A vacuum cleaner body that filters the suctioned air with an internal dust bag and a filter and discharges it indoors from the exhaust port, a suction case with an open bottom surface, and the suction port and suction case of the above-mentioned vacuum cleaner body can be detached The suction force of the vacuum cleaner body acting on the suction case via the suction pipe sucks dust on the floor surface of the tatami mat, carpet or the like.

[0003]

The conventional vacuum cleaner has the following problems.
In order to enhance the dust suction efficiency, the suction force by the suction fan is maximized. For this reason, if the suction case is placed along the floor surface to suck the dust on the floor surface, the greater the suction force of the cleaner body, the more the suction force causes the suction case to be attracted to the floor surface and the suction case to be attached to the floor surface. A lot of work is required to move it back and forth. In order to smoothly move the suction case back and forth, a roller or the like may be attached to the lower opening end of the suction case to increase the gap between the suction case and the floor surface. There is a problem that only the dust is sucked and the dust is not sucked.

The present invention has been proposed in view of the above problems, and an object thereof is to provide an electric vacuum cleaner having a good dust suction efficiency and capable of smoothly moving the suction case back and forth. .

[0005]

In order to achieve the above object, the first invention of the present invention has a suction port and a discharge port,
Further, in a case body having a cleaner body for internally filtering the air sucked together with dust from the suction port by a suction fan rotatably driven by a built-in drive motor and discharging the air from the discharge port, and a suction chamber having an open bottom surface. It is possible to attach / detach the suction case in which a blow-out nozzle is provided in a part of the blow-out nozzle, and the tip blow-out port of this blow-out nozzle faces the lower opening of the suction chamber, and the suction port of the cleaner body and the suction chamber of the suction case And a discharge pipe of the cleaner main body and a discharge nozzle in the suction case that are detachably connected to each other.

A second invention has a suction port and a discharge port,
In addition, a cleaner body for internally filtering the air sucked together with dust from the suction port by a suction fan that is driven to rotate by a built-in drive motor and discharging the air from the discharge port, and a case body having a suction chamber whose bottom surface is opened. An opening is formed in a part of the case body, and a suction nozzle is provided in a part of the inside of the case main body. A front end outlet of the suction nozzle faces the bottom opening of the suction chamber, and a rear end of the suction nozzle is disposed. The suction case is opened to the outside through the opening of the case body, and the suction pipe is detachably connected to the suction port of the cleaner body and the suction chamber of the suction case.

[0007]

According to the invention of claim 1, the air inside the cleaner body is discharged to the blow-out pipe through the discharge port by driving the suction fan of the cleaner body. The air discharged to the blow-out pipe is sent to a blow-out nozzle arranged in the suction chamber of the suction case, and then blown out from the blow-out nozzle and blown onto the floor surface. Due to the blowing force of the blown air, dust collected on the floor surface of the tatami mat, carpet, etc. rises in the suction case, and the dust that has risen acts on the suction chamber of the suction case via the suction pipe. By the suction force of the suction fan, the air is sucked into the cleaner body together with the air. The air sucked together with the dust is filtered in the cleaner body, discharged from the discharge port, and sent to the blowing nozzle via the blowing pipe. On the other hand, since the air is blown from the blowout nozzle onto the floor surface, the suction force of the suction case onto the floor surface is weakened, and the suction case can be moved smoothly along the floor surface.

According to the second aspect of the present invention, by driving the suction fan of the cleaner body, a suction force acts on the suction case via the suction pipe, and the suction force sucks the air in the suction nozzle. A flow is generated, and an appropriate amount of outside air is sucked into the suction nozzle via the air suction port, is sucked from the tip outlet of the suction nozzle, and is blown onto the floor surface. Due to the blowing force of the blowing air sucked from this suction nozzle, dust accumulated on the floor surface of the tatami mat, carpet, etc. rises up in the suction case, and the soaring dust acts on the suction chamber of the suction case via the suction pipe. Due to the suction force of the suction fan of the vacuum cleaner body, the vacuum cleaner body is sucked together with the air. Further, the suction force of the suction case on the floor surface is weakened, and the suction case can be smoothly moved along the floor surface.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of an electric vacuum cleaner according to the present invention is shown in FIG.
The following is a description with reference to FIGS.

[Embodiment 1] As shown in FIG. 1, an electric vacuum cleaner according to this embodiment has a cleaner body (1), a suction case (2), a suction pipe (3), and a blow-out pipe ( 4) and.

The cleaner body (1) has a suction port (6) and a discharge port (7) on the front end face and the rear upper face, and a suction fan (9) rotatably driven by a drive motor (8). The air sucked together with the dust from the suction port (6) is filtered by the dust collecting bag (10) and the filter (11) provided inside, and then discharged from the discharge port (7) and the dust is collected. The dust bag (10) collects dust. The vacuum cleaner body (1) has a plurality of wheels (12) attached thereto and is movable back and forth.

As shown in FIGS. 1 and 2, the suction case (2) is composed of a box-shaped case body (17) having an opening (16) on the lower surface and a blow-out nozzle (18). ing. The blow-out nozzle (18) is arranged along the width direction in the front part of the case body (17), and faces the lower surface opening (16) of the case body (17) that constitutes the suction chamber (19). It is formed in a tapered shape, and the tip outlet (18a) is formed on the lower surface opening (16).
And the top wall (17) of the case body (17).
In a), the first connection port (21) opened in the suction chamber (19) of the case body (17) of the suction case (2) and the first connection port (21) opened in the blowout nozzle (18) in the suction case (2). Two connection ports (22) are provided. The spacer (23) is interposed between the blowout nozzle (18) and the front wall portion (17b) of the case body (17), and blown air blown out from the blowout nozzle (18) is
The escape between the blowout nozzle (18) and the front wall portion (17b) is prevented.

The suction pipe (3) is, for example, a hard first and second connecting pipes (24a) (24b) and a bellows pipe (25) which are sequentially connected. The first connecting pipe (24)
Connect the tip of a) to the first connection port (2) of the suction case (2).
1) Attach the rear end of the bellows pipe (25) to the vacuum cleaner body (1).
Removably connected to the respective suction ports (6). The blow-out pipe (4) has a bellows shape, and its tip is connected to the second connection port (22) of the suction case (2) and its rear end is connected to the discharge port (7) of the cleaner body (1). ) And detachably connect to each. The blowout pipe (4) may be configured by connecting a plurality of pipes that can be connected and separated.

A roller (27) capable of rolling on the floor surface (26) at a desired portion of the lower opening end of the case body (17) constituting the suction case (2), as shown by the alternate long and short dash line in FIG. ) May be attached.

When the vacuum cleaner having the above structure is used, one end of the suction pipe (3) and the blowing pipe (4) are connected to the first and second connection ports (21) (22) of the suction case (2). And the other ends of the pipes (3) and (4) are connected to the suction port (6) and the discharge port (7) of the cleaner body (1), respectively. Then, while holding the second connecting pipe (24b) of the suction pipe (3) by hand, the lower surface opening (16) of the suction case (2) is moved along the floor surface (26), and the power source of the vacuum cleaner body is supplied. Is turned on, the drive motor (8) is driven, and the suction fan (9) is rotationally driven.

By rotating the suction fan (9),
The air in the cleaner body (1) is discharged to the blow pipe (4) through the discharge port (7). The air discharged to the blowout pipe (4) is sent to the blowout nozzle (18), and then the case body (1
It is sprayed onto the floor surface (26) through the lower surface opening (16) in (7). Due to the blowing force of the blowing air from the blowing nozzle (18) to the floor surface (26), the dust accumulated on the floor surface of the tatami mat, the carpet, etc. rises up in the suction chamber (19) of the suction case (2). The dust that has risen up is sucked into the suction case (2) through the suction pipe (3) by the rotation drive of the suction fan (9).
The suction force acting on the suction chamber (19) sucks the air into the cleaner body (1) together with the air. The air sucked together with the dust by the suction force of the suction fan (9) of the cleaner body (1) is filtered by the dust collecting bag (10) and the filter (11) and then through the discharge port (7). The dust is collected in the dust bag (10) while being discharged to the blowout pipe (4).

The air that has been sucked into the cleaner body (1) along with the dust and then discharged to the discharge nozzle (18) through the discharge port (7) flows through the discharge pipe (4) and the discharge nozzle (18). It blows through and moves circularly. The suction force of the suction case (2) to the floor surface (26) is weakened by the blowing force of the blowing air from the blowing nozzle (18) to the floor surface (26), and the suction case (2) is moved to the floor surface (26). ) Can be moved back and forth smoothly. Therefore, during the cleaning of the floor surface, the suction case (2) does not contact the floor surface (26), and the floor surface (26) of the tatami mat, the carpet, etc. is prevented from being damaged by friction with the suction case (2). It

Further, although the air discharged from the discharge port (7) of the cleaner body (1) contains fine dust which is not removed by the dust bag (10) or the filter (11),
Since the air circulates and moves as described above, the minute dust mixed in the air is not discharged into the room, so that the minute dust is prevented from scattering into the room and the room air is not contaminated.

In the above embodiment, the suction pipe and the blow-out pipe are separately provided, but the present invention is not limited to this, and the suction passage and the blow-out passage are separately formed in one pipe. May be.

[Embodiment 2] In this embodiment, the blowing pipe (4) of Embodiment 1 is abolished, and the same parts as those shown in FIGS. Omit it. As shown in FIG. 3, the top wall portion (17a) of the case body (17)
Is provided with a connection port (31) opened to the suction chamber (19) of the case body (17) and an opening opened to the suction nozzle (32) in the case body (17), for example, an air suction port (33). The suction nozzle (32) is opened to the outside through the air suction port (33). The suction nozzle (32) has the same structure as the blowout nozzle (18) of the first embodiment and is attached at the same position in the case body (17).

When the vacuum cleaner having the above structure is used, both ends of the suction pipe (3) are connected to the connection port (3) of the suction case (2).
1) and the suction port (6) of the cleaner body (1), respectively. The lower surface opening (16) of the suction case (2)
After moving the cleaner along the floor surface (26), the suction fan (9) of the cleaner body (1) is driven. By driving the suction fan (9) of the cleaner body (1), a suction force acts on the suction chamber (19) of the suction case (2) through the suction pipe (3), and the suction nozzle also sucks the suction force. The air in the (32) is sucked to generate an air flow, and an appropriate amount of external air is sucked into the suction nozzle (32) through the air suction port (33) along with the air flow, and the suction nozzle ( It is sucked out from the tip end outlet (32a) of 32), and the same spraying action as that of the first embodiment is generated and sprayed on the floor surface (26). The dust collected on the floor surface (26) of the tatami or carpet by the blowing force of the blowing air sucked from the suction nozzle (32) soars in the suction case (2), and the soaring dust is sucked up by the suction pipe (3). ) Via the suction force of the suction fan (9) of the cleaner body (1) acting on the suction chamber (19) of the suction case (2), the air is sucked into the cleaner body (1) together with the air.

Further, due to the blowing force of the blowing air from the suction nozzle (32) to the floor surface (26), the suction force on the floor surface (26) of the suction case (2) becomes weak, and the suction case (2). Can be smoothly moved back and forth along the floor surface (26), and the floor surface (26) can be prevented from being damaged by friction with the suction case (2).

[Embodiment 3] In this embodiment, as shown in FIG. 4, a partition wall (41) curved in a predetermined shape is fixedly provided in a case body (17), and the partition wall (41) and the case are fixed. Body (17)
The suction nozzle (4) with the top wall (17a) and front wall (17b) of the
2) is formed and the tip outlet (43) is formed into the case body (17)
It faces the lower opening (16). The rear wall portion (17c) of the case body (17) is provided with a connection port (44) opening to the suction chamber (19) of the case body (17) and the top wall portion (17a) of the case body (17). To the suction nozzle (4
A plurality of suction ports (45), which are openings in 2), are provided at a constant pitch in the width direction, and an air guide (46) is provided at the lower end of the front wall (17b) of the case body (17). . When using the vacuum cleaner having the above-mentioned configuration, after connecting both ends of the suction pipe (3) to the connection port (44) of the suction case (2) and the suction port (6) of the cleaner body (1), respectively, When the suction fan (9) of the cleaner body (1) is driven, a suction force acts on the suction chamber (19) of the suction case (2) as in the second embodiment, and the suction force sucks the external air. The air is sucked into the suction chamber (19) through the nozzle (42), the same spraying action as that in the first embodiment is generated, and is sprayed on the floor surface (26) while being guided by the air guide (46). The dust collected on the floor surface (26) of the tatami or carpet by the blowing force of the blowing air sucked from the suction nozzle (42) soars in the suction case (2), and the soaring dust is sucked by the suction pipe (3). ) Via the suction force of the suction fan (9) of the cleaner body (1) acting on the suction chamber (19) of the suction case (2), the air is sucked into the cleaner body (1) together with the air.

Further, the suction force of the suction case (2) to the floor surface (26) is weakened by the blowing force of the blowing air from the suction nozzle (42) to the floor surface (26), and the suction case (2). Can be smoothly moved back and forth along the floor surface (26), and the floor surface (26) can be prevented from being damaged by friction with the suction case (2).

[Embodiment 4] In this embodiment, as shown in FIG. 5, an opening (51) extending in the width direction is formed in the front wall portion (17b) of the case body (17) and the case body ( A suction nozzle (52) having an L-shaped cross section is disposed inside the suction chamber (17) so that the tip outlet (53) faces the lower surface opening (16) of the suction chamber (19) and the suction port (54) at the rear end. Is opened to the outside through the opening (51) of the case body (17), and the opening cross section of the suction nozzle (52) has a flat shape extending in the width direction of the case body (17). .

When a suction force acts on the suction chamber (19) of the suction case (2) by driving the suction fan (9) of the cleaner body (1), this suction force causes the suction nozzle (52) to pass through the suction nozzle (52). As a result, the external air is sucked into the suction chamber (19), and the same spraying action as that of the first embodiment is generated and sprayed on the floor surface (26). From this suction nozzle (52) to the suction chamber (19)
Due to the blowing force of the blowing air sucked in, dust rises and is sucked by the cleaner body (1), and the suction force on the floor surface (26) of the suction case (2) is weakened.

The opening provided in the case body of each of the above embodiments may be provided not only in the top wall portion or the front wall portion but also in the rear wall portion or both side wall portions, and the formation site thereof is not limited.
Further, various nozzle shapes can be used.

[0028]

According to the first and second aspects of the invention, since the blast air is blown from the nozzle toward the floor surface, the blast force of the blast air weakens the suction force of the suction case on the floor surface. The suction case can be moved smoothly along the floor surface, and the floor surface of a tatami mat, a carpet, or the like can be prevented from being damaged by friction with the suction case. Moreover, the dust collected in the recesses on the floor surface is blown off by the blowing air and then sucked by the suction pipe by the suction force of the suction fan, so that the dust on the floor surface can be reliably removed.
Further, since the suction force of the suction case on the floor surface is weakened, the suction case does not stick to the floor surface and a sudden load is not applied to the drive motor, the drive motor rotates smoothly, and the electrical efficiency is also improved. It becomes good and the durability is greatly improved.

Further, as in the first aspect of the invention, when the discharge port of the cleaner body and the blowout nozzle in the suction case are detachably connected, the air sucked by the suction fan of the cleaner body and filtered. After being blown out from the blow-out nozzle through the blow-out pipe, it is again sucked by the suction pipe, circulates, and is not discharged indoors.Therefore, minute dust mixed in the air discharged from the discharge port of the cleaner body Is prevented from scattering in the room, and the air in the room does not get dirty. Moreover, as described above, the drive motor is not suddenly loaded,
In addition, since the air is not discharged from the cleaner body to the room but is discharged to the blowing nozzle, the noise of the motor and the noise of discharging the air to the blowing nozzle are reduced, and the noise is reduced.

[Brief description of drawings]

FIG. 1 is a schematic perspective view illustrating a first embodiment of an electric vacuum cleaner according to the present invention.

FIG. 2 is a vertical sectional view of the suction case shown in FIG.

FIG. 3 is a vertical sectional view showing a suction case according to a second embodiment.

FIG. 4 is a vertical sectional view showing a suction case according to a third embodiment.

FIG. 5 is a vertical sectional view showing a suction case according to a fourth embodiment.

[Explanation of symbols]

 1 Vacuum cleaner body 2 Suction case 3 Suction pipe 4 Blow-out pipe 6 Suction port 7 Discharge port 8 Drive motor 9 Suction fan 16 Bottom opening 17 Case body 18 Blow-out nozzle 18a Tip blow-out port 19 Suction chamber 32, 42, 52 Suction nozzle 33 , 45, 51 Openings 32a, 43, 53 Tip exit

Claims (2)

[Claims] 1. Cleaning in which air sucked together with dust from the suction port is internally filtered by a suction fan that has a suction port and a discharge port and is driven to rotate by a built-in drive motor, and is discharged from the discharge port. A suction case in which a blow-out nozzle is provided in a part of the main body of the machine and a case body having a suction chamber whose bottom surface is open, and the tip outlet of this blow-out nozzle faces the bottom opening of the suction chamber; Electricity consisting of a suction pipe that detachably connects the suction port of the main body of the machine and a suction chamber of the suction case, and a blow pipe that detachably connects the discharge port of the cleaner body and the blowout nozzle in the suction case Vacuum cleaner. 2. Cleaning in which air sucked together with dust from the suction port by a suction fan that has a suction port and a discharge port and is driven to rotate by a built-in drive motor is internally filtered and discharged from the discharge port. An opening is formed in a part of a case main body having a machine main body and a suction chamber whose lower surface is opened, and an intake nozzle is arranged in a part of the case main body.
A suction case in which the tip outlet of the suction nozzle faces the opening on the lower surface of the suction chamber, and the rear end of the suction nozzle is opened to the outside through the opening of the case body; An electric vacuum cleaner comprising a suction pipe that is detachably connected to the suction chamber of the case.