JPH0677564B2 - Vacuum cleaner floor nozzle - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a floor nozzle of an electric vacuum cleaner used in general households.

2. Description of the Related Art Conventionally, this type of bed nozzle has generally been configured as shown in Japanese Patent Publication No. 59-52548. Further, the one described in JP-B-52-6036 is also considered. The configuration will be described below with reference to the drawings.

In FIG. 4, a joint 1 communicating with the suction side of the vacuum cleaner is connected to a nozzle body 3 composed of an upper nozzle member 2a and a lower nozzle member 2b. Reference numeral 4 is a brush holder that holds the brush body 5 and is moved up and down, and 6 is a suction port that sucks dust on the carpet or floor surface by suction force.

Further, as shown in FIG. 5, a cleaning attachment 10 having a brush 7 9 inwardly inclined on each of the rotor 7 and the arc-shaped inner peripheral surface 8 as shown in FIG.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention In such a conventional floor nozzle of an electric vacuum cleaner, the brush body 5 is made to project downward during cleaning on the floor surface so that the floor surface is not damaged. Make it act like sweeping, and when cleaning on the carpet, store the brush body 5 inside,
I try not to cut into the carpet's hair. However, with this one, when cleaning on the carpet, the fibrous dust such as lint on the same carpet is not absorbed by the suction force and the brush body 5.
It was not able to be sufficiently captured even with only a slight scraping, and therefore there was a large amount of dust remaining on the carpet, resulting in insufficient performance. Further, there is a problem that the thread waste caught on the brush body 5 is not sucked and remains attached, which is very unsanitary.

Further, in the example of FIG. 6, the rotor 7 which has a capability of sufficiently capturing the yarn waste but has a rotor 7 which rotates to a portion for collecting the yarn waste requires a large space for rotation and a large floor nozzle. However, there was a drawback that it became difficult to use.

The present invention solves such a problem, and provides a floor nozzle of an electric vacuum cleaner which also reliably captures dust such as lint.

Means for Solving the Problems In order to solve the above problems, the present invention has a downward opening suction port at the lower front portion of a floor nozzle body provided with a joint for connection to the vacuum cleaner side, and a lower opening at the rear rear portion. The dust collecting parts are provided in the downward opening, and the dust collecting parts are connected to each other through a shield plate which is opened / closed in the middle of the air passage connecting the suction port and the joint. The part is rotated reversely in response to the front-back movement of the floor nozzle main body, the front part has a dust collecting part having a large-diameter circular arc surface, the rear part has a small-diameter circular arc surface, and the dust collecting part A rotor having airtight portions slidably contacting the rear inner wall is provided, and dust on the surface to be cleaned is captured when the rotor is turned in one direction, and brushed brushes of the scraping plate are turned when the rotor is turned in the opposite direction. The brushed brush is installed diagonally so that the dust captured by It is a thing.

Effect According to the above-mentioned structure, it is possible to sufficiently capture the lint on the carpet, the rotor can be made compact, the overall size can be made small, and the suction structure is easy and easy to use. It can be cleaned cleanly.

Embodiments Embodiments of the present invention will be described below with reference to the drawings.

1 to 3, reference numeral 11 denotes a floor nozzle main body formed by connecting an upper nozzle member 12 and a lower nozzle member 13 via a bumper 14, and a rear central portion thereof is formed in a circular shape to form a joint.
It is rotatably disposed on the substantially cylindrical portion 16 of 15. 17 is a fitting 15
Is a pair of rollers disposed below the. In addition, the lower nozzle member 13 of the floor nozzle body 11 has a suction opening 18 and a suction groove extending left and right from the suction opening 18 and having an outer end opened.
A dust suction portion 20 formed of 19 and a slit-shaped opening 21 located in front of and behind the dust suction portion 20 are formed in parallel with the dust suction portion 20.

A pair of brush bodies 22 and a brush adjusting body 23 that moves the brush bodies up and down are provided in the floor nozzle body 11. The brush body 22 has a configuration in which the brushes 25 are planted in a brush holder 24 in a bundle shape, and the guide holes 26 formed at both ends of each brush holder 24 are fitted to the bosses 27 projecting from the upper nozzle member 12. It is held so that it can move up and down. The brush 25 moves up and down through the slit-shaped opening 21 as the brush 25 moves up and down.

28 is a lever of the brush adjusting member 23, which is a window hole of the upper nozzle member 12.
It is facing outward from 29.

In addition, the suction port 18 is provided between the pair of rollers 17 behind the suction port 18.
A dust collecting section 30 is provided which is further separated. A rotatable rotor 31 and a scraping plate 32 which can be moved back and forth are arranged in the dust collecting section 30, and raised brush 33 and raised brush 34 are provided at corresponding portions of the rotor 31 and the scraping plate 32. Has been planted. Here, the brushing brush 33 of the one rotor 31 is inclined so that its tip is positioned obliquely rearward, and the brushing brush 34 of the other scraping plate 32 is inclined so that its tip is positioned obliquely upward. Further, the rotor 31 is provided with a protrusion 35 for stopping rotation, and the scraping plate 32 is provided with a spring (not shown) for urging the scraper plate 32 toward the rotor 31 side.

An air passage 36 formed by the upper nozzle member 12 and the partition wall 37 communicates between the suction port 18 and the joint 15. Further, a shielding plate 38 pivotally supported on the partition wall 37 is formed from the rear part of the brush adjusting body 23. Then, the opening 39 provided in the partition wall 37 is shielded from the opening 39.
38 is opened and closed by rotating about a rotating shaft 40. Further, a cam 41 integrally provided on the lever 28, a cam plate 42 integrally provided on the rotating shaft 40 of the shield plate 38, and a shield plate.
The opening 39 is configured to be opened / closed by the position of the lever 28 by a spring 43 biasing the opening direction of the 38, and the dust collecting section is formed by opening the opening 39 only when the lever 28 is slid toward the center of the main body. 30 is arranged so as to communicate with the ventilation path 36 via the auxiliary passage 44.

The dust collecting portion 45 provided with the brushed brush 33 of the rotor 31 has a large arc-shaped radius so as to come into contact with the cleaning surface, and the airtight portion 46 behind the dust collecting portion 45 has a much smaller radius than the dust collecting portion 45. It is configured to be in sliding contact with the rear inner wall portion of the dust collecting portion 30.

Explaining the operation in the above-mentioned configuration, the brush body 22 is one in which the amount of the brush 25 is adjusted according to the state of the surface to be cleaned, for example, when the surface to be cleaned is a carpet, it is in a sinking state,
If you want to obtain a strong suction force on the surface to be cleaned, such as a tatami mat, it is set to a medium amount, and if you want to obtain a weak suction force, it is set to a maximum amount. The adjustment of the feeding amount of the brush 25 is performed by sliding the brush adjusting body 23 left and right via the lever 28 and moving the brush body 22 up and down along the cam groove (not shown). is there.

Dust from the floor surface or tatami mat flows into the floor nozzle main body 11 through the suction port 18 and the suction groove 19 extending left and right from the suction port 18, and then flows from the suction joint 15 to the vacuum cleaner.

By the way, when cleaning the carpet,
To the most central side (that is, the brush 25 is in a state of being raised to the uppermost portion). At this time, the opening 39 is the shielding plate.
An auxiliary passage is set which is opened by 38 and connects the dust collecting portion 30 and the ventilation passage 36 to each other. Therefore, the fiber dust such as the yarn waste captured by the dust collecting unit 30 is vigorously sucked into the air passage 36.

Next, a description will be given of the situation in which the dust collecting section 30 captures the yarn waste. When the floor nozzle main body 1 is pushed and moved forward, the protrusions 35 of the rotor 31 are hooked on the carpet to rotate backward, and the raised brush 33 is exposed on the carpet surface as shown in FIG. Therefore, since the raised brush 33 is inclined forward, the thread waste is captured. Then, when the floor nozzle main body 11 is pulled backward, the rotor 31 rotates forward through the protrusion 35, the raised brush 33 enters inside, and faces the raised brush 34 of the scraping plate 32. When the floor nozzle main body 11 is further advanced, the rotor 31 turns backward again via the protrusions 35, and at that time, the thread waste of the nap brush 33 is scraped off by the nap brush 34. However, no lint remains on the brushed brush 33 exposed on the carpet surface,
Also, dust can be collected in a new state.

Then, the lint attached to the brushed brush 34 is vigorously sucked into the ventilation passage 36 by the suction force, and a large amount of dust does not stay in the dust collecting unit 30.

In particular, the dust collecting section 30 has a dust collecting section 45 provided with a raised brush 33 and an airtight section 46 formed on the surface thereof, and is constituted by a rotatable rotor 31, and one of the airtight section 46 of the rotor 31. Since the part or all of them has a smaller radius of rotation than the dust collection part 45, the rotor 31 can be made compact, so the overall size can be made smaller, and the suction structure is also compact and easy to use and clean. Is.

When the airflow from the dust collecting part 30 is reduced, the amount of dust flowing from the suction port 18 is reduced, but the amount of leakage in the dust collecting part 30 is not necessary so as to affect the dust collecting performance. By providing it, the collection performance of lint is improved, and the operability is good on the carpet, floor, and tatami, and it is very easy to use as a whole.

As described above, the floor nozzle of the vacuum cleaner of the present invention is
The floor nozzle body provided with a joint for connection to the electric vacuum cleaner has a downwardly open suction port at the lower front portion, and a downwardly open dust collecting portion at the rear lower portion, and the suction port and the joint. In the middle of the ventilation passage that communicates with the dust collection part, the dust collection part is connected through a shield plate that can be opened and closed, and the dust collection part is rotated in reverse in response to the forward and backward movement of the floor nozzle body. A dust collecting part consisting of a large-diameter circular arc surface in the part, a rear part consisting of a small-diameter circular arc surface, and a rotor having an airtight part that slidably contacts the rear inner wall of the dust collecting part, respectively, Since a dust brush on the surface to be cleaned is trapped on the surface of the dust collecting portion when the rotor is reversed in one direction, and a brush brush for scraping off the dust captured by the brush brush of the scraping plate is reversed when the rotor is reversed in the opposite direction, A rotor is connected for the small diameter of the air tight part. Because that can be configured to extract, overall size are of particular significant impact on usability can configure shorten the length of the front and rear, the suction structure can be reduced in size, yet use very comfortable well clean cleaned.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a floor nozzle showing an embodiment of the present invention, FIG. 2 is a top view with the upper nozzle member of the floor nozzle removed, FIG. 3 is an overall perspective view, and FIG. FIG. 5 is a vertical sectional view of a floor nozzle showing a conventional example, and FIG. 5 is a vertical sectional view of an attachment showing a second conventional example. 11 …… Floor nozzle body, 15 …… Fitting, 18 …… Suction port, 28…
… Lever, 30 …… Dust collector, 33, 34 …… Brushed brush, 3
6 …… Ventilation passage, 45 …… Dust collection part, 46 …… Airtight part.

Claims (1)

[Claims] 1. A floor nozzle main body provided with a joint for connection to an electric vacuum cleaner side is provided with a downwardly open suction port at a lower front portion thereof, and a downwardly open dust collecting portion at a lower rear portion thereof. In the middle of the ventilation path that connects the suction port and the joint, a dust collection part is connected through a shield plate that is optionally opened and closed, and the dust collection part responds to the back-and-forth movement of the floor nozzle body. Rotate in reverse, the dust collecting part consisting of a large-diameter circular arc surface in the front part,
A rotor with an arcuate surface with a small diameter is formed in the rear part, and an airtight part that is in sliding contact with the rear inner wall part of the dust collecting part is arranged, and the dust collecting part surface is cleaned when the rotor is turned in one direction. Floor nozzles for electric vacuum cleaners that have a raised brush that captures dust on the surface and scrapes the dust captured by the raised brush of the scraping plate when reversing in the opposite direction.