JP2002165732A - Intake tool for vacuum cleaner and vacuum cleaner using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intake tool which can prevent dust from clogging up and realize low noise without deteriorating the dust collecting performance of the tool. SOLUTION: An intake tool body B has an intake opening 23 at the down side. A brush 28 is formed at the down side of the intake tool body B, which has a shape at least one part of it doesn't cross at right angles with the traveling direction of the intake tool B. The dust collecting performance is not deteriorated, no dust clogging up occurs, and low noise can be realized all at the same time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction device for a vacuum cleaner and a vacuum cleaner using the suction device.

[0002]

2. Description of the Related Art The structure of a vacuum cleaner will be described with reference to FIGS. The suction tool main body A is an upper frame 1 constituting an upper part.
And a lower frame 2 constituting a lower portion of the suction tool main body, and has a substantially rectangular shape that is long in the left-right direction and short in the front-rear direction. On the lower surface of the lower frame body 2 facing the surface to be cleaned, a concave dust collecting passage 3 having a constant width is provided in a straight line along the longitudinal direction of the suction tool main body A. It is open on both sides of the suction tool body A. Further, a suction port 6 communicating with the dust collection passage 3 is provided at a substantially central portion of the lower frame 2.
In addition, a roller mounting portion 7a is formed behind the central portion of the suction tool main body A, and a rear roller 7 is rotatably mounted on the roller mounting portion 7a.

[0003] At the rear center of the suction tool main body A, above the roller mounting portion 7a, a tubular connecting portion for rotatably connecting the first connecting pipe 9 is provided. Reference numeral 10 denotes a second connection pipe, and one end of the second connection pipe 10 has a tilt shaft 1.
0a, the tilting shaft 10a is pivotally supported in a large diameter portion 9a formed at the other end of the first connecting pipe 9, and the second connecting pipe 10
Is rotated about the tilt shaft 10 a in the large-diameter portion 9 a so that the second connecting pipe 10 tilts with respect to the first connecting pipe 9. A brush 11 on the lower frame 2
Is fixed.

[0004]

However, the suction tool main body A is provided with a brush 11 held by the lower frame 2.
Are held behind the suction port 6, thereby increasing the internal pressure of the suction tool main body A to improve the dust collection performance, and have the effect of preventing the dust on the surface to be cleaned from escaping backward. . However, the provision of the brush 11 has a problem that the suction port 6 is narrowed, large dust is caught, the flow speed of the intake air is increased, and the noise is increased.

An object of the present invention is to solve the above problems and to prevent dust clogging and reduce noise without lowering the dust collecting performance of the suction tool.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a suction tool main body having a suction port opened on a lower surface, wherein at least a part of the dust has a shape that is not orthogonal to the traveling direction of the suction tool. Since the scraping portion is attached to the lower surface of the suction tool main body, the dust collecting performance is not reduced, the dust is not clogged, and the noise is reduced.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION
In the suction device main body having a suction port opened on the lower surface, at least a part of the suction device is provided with a dust scraping part having a shape that is not orthogonal to the traveling direction of the suction device, and the dust collection performance is reduced. Without causing dust and clogging, noise reduction is realized.

According to a second aspect of the present invention, there is provided a dust scraping portion having a central portion widened rearward behind the suction port, and the suction port is extended to the vicinity of the dust scraping portion. So, without lowering the internal pressure of the suction tool,
In addition, large dust can be sucked in smoothly without being caught, and the usability can be improved.

According to a third aspect of the present invention, a dust scraping portion having a central portion curved rearward is disposed behind the suction port, and the suction port is extended to the vicinity of the dust scraping portion. Therefore, it is possible to smoothly suction large dust without lowering the internal pressure of the suction tool, and to improve usability.

[0010] According to a fourth aspect of the present invention, a substantially V-shaped suction port is formed so as to gradually increase the opening area toward the rear center, and a dust scraper is disposed near the suction port. Since the dust can be efficiently guided without leaking to the suction port provided in the center of the suction tool, the dust collection performance of the suction tool is improved. In addition, since the opening is large near the suction port of the suction device, the flow velocity of the suction air is suppressed, and the wind noise is reduced, so that the noise of the suction device can be improved.

The invention according to claim 5 of the present invention is characterized in that the dust-raising portion is attached to the lower frame constituting the suction tool main body via the dust-raising portion attaching member, and the dust-raising portion or the lower frame is formed. Since it is held by being engaged with the claw provided on the crab, it can be easily set on the lower frame, and the assembling property can be improved.

In the invention according to claim 6 of the present invention, the dust-raising part attaching member is formed by extrusion and then formed by bending, and the rigidity of the brush holder serving as the dust-raising part attaching member is reduced. The brush, which is a dust scraper, can be reliably held even under high and severe use conditions, and reliability is improved.

According to a seventh aspect of the present invention, there is provided a dust scraping portion mounting member in which a dust scraping portion mounting member is formed of a soft body and is held by being engaged with a groove of a lower frame. The brush holder does not need to be processed into a curved shape while remaining in a belt shape. Furthermore, it can be fitted to the brush holder holding portion of the lower frame, so that the assemblability can be improved.

According to the invention of claim 8 of the present invention, the holding portion for attaching the dust scraping portion of the dust scraping portion attaching member is formed in a substantially U shape, and after the dust scraping portion is attached, the holding portion is formed in a substantially U shape. The wall of the character is tilted inward to fix the dust scraper, and the brush that is the dust scraper is inserted into the brush holder that is the attachment member for the dust scraper,
It is easy to assemble, and can securely hold the brush. Therefore, the brush can be reliably held even under severe use conditions, and the reliability is improved.

According to a ninth aspect of the present invention, a holding portion for attaching a dust scraping portion of a dust scraping portion attaching member is formed in a substantially U-shape, and the dust scraping portion is bonded or welded. The brush holder, which is fixed to the holding unit, can simplify the cross-sectional shape of the brush holder, which is the dust-raising unit attaching member, and can easily manufacture the brush holder, thereby improving the accuracy.

According to a tenth aspect of the present invention, there is provided a brush holder as a member for attaching a dust-raising portion, wherein the dust-raising portion is held by bonding or welding to a lower frame constituting a suction tool main body. Can be held without using components such as the above, and the number of components can be reduced.

According to an eleventh aspect of the present invention, a rotary brush is provided facing a suction port opened on a lower surface.
Dust on the surface to be cleaned can be more reliably scraped out and sucked. In this case, dust is particularly likely to be caught on the suction port. However, since the opening area of this portion is widened, dust and the like are not caught. Further, since the brush is arranged at the rear of the intake port, the dust scraped off by the rotating brush does not leak backward, so that the usability is improved and the cleaning time can be reduced.

According to a twelfth aspect of the present invention, a vacuum cleaner main body having an electric blower for sucking dust communicates with the vacuum cleaner suction tool according to any one of the first to eleventh aspects. The connection port is connected in such a manner as described above, so that cleaning with good usability can be performed.

[0019]

(Embodiment 1) A first embodiment of the present invention will be described below with reference to FIGS.

The suction tool main body B has an upper frame 2 constituting an upper part.
1 and a lower frame 22 which constitutes a lower portion of the suction tool body B, and has a substantially rectangular planar shape that is long in the left and right directions and short in the front and rear directions. A suction port 23 having a downward opening is provided on the lower surface of the lower frame body 22 facing the surface to be cleaned, and a connecting portion 24 projecting rearward and communicating with the suction port 23 is formed at the rear center of the suction tool main body B. The connecting portion 24 and the suction port 23 communicate with each other via a suction passage (not shown) in which the upper frame 21 and the lower frame 22 are formed, and are connected to the extension pipe 25 and further to the extension pipe 25. A connection port 27 is provided in the vacuum cleaner main body 39 so as to communicate with an electric blower (not shown) arranged in the vacuum cleaner main body 39 via a connected hose 26. Further, in the longitudinal direction behind the suction port 23, at least a part of the brush is a dust-raising part attaching member holding a brush 28 which is a dust-raising part having a shape not orthogonal to the traveling direction of the suction tool body B. A holder 29 is provided.

(Embodiment 2) Next, a second embodiment will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

A brush holder 29, which is a member for attaching a dust scraper in the longitudinal direction behind the suction port 23, has a curvature so as to spread substantially rearward at a substantially central portion, and an opening at a central portion of the suction port 23 becomes large. It is formed as follows. The brush 28 serving as a dust scraper is, for example, a belt-like brush in which fine fibers are densely packed. As a result, the internal pressure of the suction port 23 of the suction tool main body B is increased to improve the dust collection performance, and the dust is prevented from leaking backward when the suction tool main body B is moved forward. In addition, by providing the central portion with a curvature, even large dust can be guided without being blocked at the intake port 23. In addition, by increasing the opening area at the center of the intake port 23 having the highest intake flow velocity, the flow velocity in this part can be reduced, and noise can be reduced.

(Embodiment 3) Next, a fourth embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The suction port 23 formed in the lower frame 22 is substantially V-shaped so that the opening area gradually increases toward the center.
A brush holder 29, which is a member for attaching a dust-raising unit to which a brush 28, which is a dust-raising unit, is fixed in the longitudinal direction at the rear, while holding the brush holder 29.

The operation of the above configuration is as follows.
The suction port 23 formed in the lower frame 22 is formed in a substantially V-shape such that the opening area gradually increases toward the center. Therefore, when cleaning is performed with the suction tool B, dust is formed in the V-shaped brush 28. Along the air inlet 23 provided at the center. As a result, the dust collection performance is improved and the opening area in the vicinity of the intake port 23 is increased, so that the intake flow velocity is also reduced and the noise of the suction device B can be reduced.

(Embodiment 4) Next, a fourth embodiment of the present invention will be described with reference to FIGS.

As shown in the figure, a brush 28, which is a dust scraper formed by a channel brush or the like, is inserted into a brush holder 29, which is a member for attaching a dust scraper, and is inserted and held. It is held by the nail 30.
At this time, in order to prevent rattling of the brush holder 29, a concave portion is formed in the brush holder 29 and a convex portion 32 is formed in the lower frame 22.
And these are mated.

(Embodiment 5) Next, a fifth embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The brush holder 2 which is a member for mounting a dust-raising portion for holding a brush 28 which is a dust-raising portion.
9 is formed by extrusion of a metal such as aluminum as an example. Thereafter, the brush holder 29 is formed to have a center curvature by machining.

The brush holder 29 formed by this method has a high rigidity and a sufficient holding force for the brush 28, so that it has excellent durability in cleaning.

(Embodiment 6) Next, a sixth embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The brush holder 2, which is a member for attaching a dust-raising unit, which holds a brush 28, which is a dust-raising unit.
9 is made of a soft material such as an elastomer as an example.
Since the shape of the brush 28 can also be changed, the brush 28 is inserted into a brush holder mounting groove 33 formed in the lower frame 22 with the brush 28 set in the brush holder 29.
Since the processing is performed with the central portion of the brush holder 29 having a curvature, the brush holder 29 can be easily manufactured. Further, the brush 28 can be easily set, and the assembling property is improved.

(Embodiment 7) Next, a seventh embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The brush holder 29, which is a dust-raising portion attaching member, is made of a metal such as aluminum as an example. Form circularly. After inserting the brush 28, the circular portion is bent inward to hold the brush 28. This facilitates extrusion and improves the accuracy of the brush holder 29 itself. Further, the holding force of the brush 28 can be sufficiently secured, and the holding can be surely performed.

Embodiment 8 Next, an eighth embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The brush 28 as a dust-raising part is held by an adhesive 35 as an example in a brush holder 29 as a dust-raising part attaching member. As a result, the sectional shape of the brush holder 29 can be simplified, so that the shape can be easily obtained and the dimensional accuracy can be improved.

Embodiment 9 Next, a ninth embodiment of the present invention will be described with reference to FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

The brush 2 is inserted into the groove 36 formed in the lower frame 22.
8 is held by bonding or welding. The brush 28 is variable in shape and can be held along the groove 36. Thereby, assemblability is improved.

(Embodiment 10) Next, in a tenth embodiment of the present invention, as shown in FIG. 12, a rotary brush 38 is held by the suction tool of the first to ninth aspects. As a result, dust collection performance is improved, and sweeping of dust to the rear portion can be prevented by the brush 28 serving as a dust scraping portion. In addition, since the opening at the center of the suction port 23 is large, dust can be prevented from clogging, and the noise of the suction tool can be reduced by expanding the suction passage 23 at the center.

[0040]

According to the present invention, it is possible to provide a vacuum cleaner which prevents dust clogging and reduces noise without lowering the dust collecting performance of the suction tool.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram of a vacuum cleaner showing a first embodiment of the present invention.

FIG. 2 is a side view of the suction device for the vacuum cleaner.

FIG. 3 is a bottom view of the suction device for the vacuum cleaner.

FIG. 4 is a bottom view of a suction device for a vacuum cleaner showing a second embodiment of the present invention.

FIG. 5 is a bottom view of a suction device for a vacuum cleaner showing a third embodiment of the present invention.

FIG. 6 is an explanatory view of processing of a brush holder of a suction tool for a vacuum cleaner according to a fourth embodiment of the present invention.

FIG. 7 is an explanatory view of a brush holder of a vacuum cleaner suction tool according to a fifth embodiment of the present invention.

FIG. 8 is an explanatory view of processing of a brush holder of a suction device for a vacuum cleaner according to a sixth embodiment of the present invention.

FIG. 9 is an explanatory view of assembling a brush of a suction tool for a vacuum cleaner according to a seventh embodiment of the present invention.

FIG. 10 is an explanatory view for assembling a brush holder of a suction tool for a vacuum cleaner according to an eighth embodiment of the present invention.

FIG. 11 is a bottom view of a vacuum cleaner suction tool according to a ninth embodiment of the present invention.

FIG. 12 is a bottom view of a vacuum cleaner suction tool according to a tenth embodiment of the present invention.

FIG. 13 is a sectional view of a conventional suction device for a vacuum cleaner.

FIG. 14 is a bottom view of the suction device for the vacuum cleaner.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Upper frame 22 Lower frame 23 Suction port 24 Connecting part 28 Brush (dust scraping part) 29 Brush holder (dust scraping part mounting member) 30 Claw 33 Groove 43 Projection

 ──────────────────────────────────────────────────の Continuing from the front page (72) Inventor Hiroyuki Uraya 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Inventor Toshifumi Miyahara 1006 Kadoma, Kazuma, Osaka Pref. Matsushita Electric Industrial Co., Ltd. AA06 AA26 AA44 AA57 AB03 AB09

Claims (12)

[Claims] 1. A vacuum cleaner having a suction opening at a lower surface thereof, wherein a dust scraper at least a part of which is not orthogonal to a traveling direction of the suction tool is attached to a lower surface of the suction tool main body. Suction device. 2. A suction device for a vacuum cleaner according to claim 1, further comprising a dust scraping portion having a central portion widened rearward behind the suction port, and wherein the suction port is extended to the vicinity of the dust scraping portion. Utensils. 3. A vacuum cleaner according to claim 2, further comprising a dust scraper having a central portion curved rearward behind the suction port, and the suction port being extended to the vicinity of the dust scraper. Suction tool. 4. The vacuum cleaner according to claim 2, wherein a substantially V-shaped suction port is formed so that the opening area gradually increases toward the rear center, and a dust scraping portion is arranged near the suction port. Suction implement. 5. A dust scraper is engaged with a lower frame constituting a suction tool main body via a dust scraper mounting member by a claw provided on either the dust scraper or the lower frame. Any one of claims 1 to 4,
Item 6. A suction device for a vacuum cleaner according to Item 1. 6. The suction tool for an electric vacuum cleaner according to claim 5, wherein the dust-raising unit attaching member is formed by extrusion and then formed by bending. 7. The suction tool for an electric vacuum cleaner according to claim 5, wherein the dust-raising portion mounting member is formed of a soft body, and is held by being engaged with a groove of the lower frame. 8. A holding portion for attaching the dust scraping portion of the dust scraping portion attaching member is formed in a substantially U-shape, and after attaching the dust scraping portion, the substantially U-shaped wall is turned inward. The suction tool for a vacuum cleaner according to any one of claims 5 to 7, wherein the dust scraper is fixed. 9. A holding portion for mounting the dust scraping portion of the dust scraping portion attaching member is formed in a substantially U shape, and the dust scraping portion is fixed to the holding portion by bonding or welding. The suction device for a vacuum cleaner according to any one of claims 8 to 8. 10. The dust scraper is held by bonding or welding to a lower frame constituting a suction tool main body.
The suction device for a vacuum cleaner according to any one of claims 9 to 9. 11. The suction tool for an electric vacuum cleaner according to claim 1, wherein a rotary brush is provided facing the suction port opened on the lower surface. 12. A vacuum cleaner body having an electric blower for sucking dust, comprising a connection port connected to communicate with the vacuum cleaner suction tool according to any one of claims 1 to 11. Vacuum cleaner.