JP4194502B2 - Floor suction tool - Google Patents

Description

  The present invention relates to a floor suction tool for a vacuum cleaner, and more particularly to a floor suction tool capable of efficiently sucking dust accumulated at a wall or the like.

The present applicant has proposed in Japanese Patent Application No. 2002-312384 as a floor suction tool capable of cleaning a wall or the like. In this floor suction tool, the suction port is opened from the lower surface of the suction tool main body case to at least a part of the front surface, and the cover constituting the front wall of the suction tool main body case is freely rotatable in the vertical direction of the suction tool main body case. The cover is attached so that the front surface portion of the suction port is closed at the lower rotation position, and the front surface portion of the suction port is opened at the upper rotation position where the cover contacts and rotates on the wall surface. When cleaning a normal floor or wall, the dust is removed from the normal floor or wall by rotating the rotating brush with a dedicated electric motor regardless of the rotating state of the cover. It can be efficiently cleaned by sucking dust effectively (see, for example, Patent Document 1).
Japanese Patent Application No. 2002-312384

  However, the dedicated electric motor that rotates the rotating brush is built in the floor suction tool, and the floor suction tool is heavy.Therefore, there is a drawback that the handling of the floor suction tool is bothered every time it is cleaned. It was.

  The present invention has been made to solve such a problem, and is capable of efficiently sucking up dust accumulated on the side of a wall and the like, and can reduce the weight and improve the operability. It is an object to provide tools.

A first means for solving the above problems is a suction tool main body case in which a suction port is opened from the lower surface to at least a part of the front surface, and is rotatably supported in the suction tool main body case via a bearing portion. A rotating brush and a cover that closes the front part of the suction port of the suction tool main body case, the cover opening a lower rotation position that closes the front part of the suction port, and the front part of the suction port. The suction tool main body is formed so as to be rotatable between an upper rotation position and is configured to rotate from a lower rotation position to an upper rotation position by contact with a flat portion such as a wall surface of the cover. The case is formed with a vent hole at a position that avoids the cover and the rotation range of the cover, and the air sucked into the suction tool body case through the vent hole is guided to the rotating brush to rotate the rotating brush. Forming a ventilation channel, and A closing member made of a soft material that closes the gap between the cover and the floor surface or the flat part is attached to the lower end of the cover, and the cover contacts the flat part and rotates to the upward rotation position. In this state, the closing member is in close contact with the flat portion .

  In the first means for solving the above-mentioned problem, it is preferable that at least a part of the closing member is bent outward.

  Moreover, it is preferable that the said rotating brush is always located back rather than the front-end part of a cover irrespective of the position of the cover rotated to an up-down direction.

  Moreover, the said cover may be comprised so that it may rotate in the direction accommodated inside the suction tool main body case.

  The cover may include a biasing unit that biases the cover in a direction in which the cover rotates downward.

According to the configuration of claim 1 of the present invention, dust collected on the floor surface or near the wall can be efficiently sucked, and the floor suction tool can be reduced in weight and operability can be improved . Moreover, there is an effect that the rotating brush can be rotated stably regardless of the rotating state of the cover .

  According to the configuration of claim 2 of the present invention, even when the floor suction tool is pressed against a flat portion such as a wall surface, air flows into the floor suction tool from between the flat portion and the cover. Since it can prevent reliably with the obstruction | occlusion member bent outside, there exists an effect of being able to prevent the fall of the rotational force of a rotating brush.

  According to the structure of Claim 3 of this invention, there exists an effect that the fall of the rotational force of a rotating brush by the rotating brush adjacent to a wall surface contacting a wall surface can be prevented.

According to the configuration of claim 4 of the present invention, even when cleaning a low place such as under the bed, it is possible to prevent the occurrence of a problem such that the cover does not open due to the cover coming into contact with the obstacle. There are effects such as.

According to the structure of Claim 5 of this invention, even if some dust adheres to the rotation part of a cover, there exists an effect that the front side part of a suction inlet can be closed reliably.

  The best mode of the floor suction tool according to the present invention will be described with reference to FIGS. The floor suction tool 1 according to the present invention includes a horizontally long suction tool body case 2 having a suction port 3 formed of an upper case 2a and a lower case 2b and opened widely from the lower surface to the front surface, and a suction tool body case. Rotating brush 4 rotatably supported at both ends in the longitudinal direction in 2 through a bearing portion (not shown), and attached to the rear surface side of suction tool body case 2 so as to be rotatable in the vertical and horizontal directions, and communicated with suction port 3 The bend 5 is composed of a front wall of the suction tool main body case 2 and a cover 6 that opens and closes the front portion 3b of the suction port 3 (see FIGS. 1 and 2). The bend 5 is connected to the cleaner body through an extension pipe and a hose (not shown).

The cover 6 has a substantially U-shaped cross-section, and the upper side is formed in an arc shape. The cover 6 is supported so as to be rotatable in the vertical direction by supporting arm portions (not shown) formed at both ends in the horizontal direction. A roller 8 whose both ends are rotatable by a bearing portion 7 and supported in a horizontal direction is attached to the substantially U-shaped front protruding portion of the cover 6. The roller 8 is formed by covering the outer peripheral surface of the roller core 9 with a raised cloth 10 that is a fibrous member as a soft and slippery contact member.

  When the roller 8 at the foremost part of the cover 6 is pressed against the wall surface W or the like, the cover 6 rotates upward while the roller 8 rotates counterclockwise. In this manner, the roller 8 is configured to be able to contact the wall surface W or the like, so that the roller 8 provided on the cover 6 functions as a front bumper of the suction tool body case 2.

  The cover 6 rotates in a direction in which the cover 6 is stored in the cover storage portion 11 formed in the suction tool body case 2 when the roller 8 contacts the wall surface W or the like and the cover 6 rotates upward. (See FIG. 5). Further, the cover 6 is provided with a biasing means such as a torsion spring (not shown) that biases the cover 6 in the direction of rotating downward.

  A closing member 12 made of a soft material (vinyl chloride resin in the present invention) that closes the gap between the cover 6 and the floor surface is attached to the lower end of the cover 6. The end of the closing member 12 is formed on the protrusion 13 and is bent outward (see FIGS. 1, 2, and 6).

  The rotating brush 4 rotatably supported by the suction port 3 of the suction tool body case 2 has a plurality of brush bodies 15 mounted on the outer peripheral surface of the rotating brush core body 14 at equal intervals in the longitudinal direction (FIG. 1). FIG. 2). The rotating brush 4 is always positioned behind the front end portion of the cover 6 regardless of the rotational position of the cover 6.

  A vent hole 16 for communicating the inside and outside of the suction tool body case 2 is formed at a position avoiding the cover 6 and the rotation range of the cover 6 of the upper case 2a. In the suction tool main body case 2, a ventilation channel 17 is formed for guiding the air taken into the suction tool main body case 2 from the vent hole 16 to the brush body 15 of the rotary brush 4. When air is supplied to the rotating brush 4 from the vent hole 16 through the ventilation channel 17, the rotating brush 4 rotates. By rotating the rotating brush 4, dust on the floor surface is scraped off, and the suction port 3. It is designed to be efficiently cleaned by being sucked in effectively. Further, a brush 18 that sweeps out dust on the floor surface is disposed on the lower surface of the lower case 2b behind the lower portion 3a of the suction port 3.

  The floor suction tool 1 configured in this way is located at the downward rotation position by the urging means when the normal floor surface (flooring floor, tatami mat, carpet, etc.) is cleaned. The front portion 3b of the suction port 3 is closed by the cover 6, and only the lower portion 3a of the suction port 3 is opened. Further, the brush 18 disposed on the lower surface of the lower case 2b behind the lower portion 3a of the suction port 3 contacts the floor surface, and the gap between the lower end of the cover 6 and the floor surface is blocked by the blocking member 12. Therefore, suction of dust on the floor surface from the lower portion 3a of the suction port 3 causes negative pressure in the suction tool body case 2.

  As a result, air flows into the suction tool body case 2 from the vent hole 16, and the air is blown onto the rotating brush 4 through the vent channel 17, whereby the rotating brush 4 rotates. The suction tool main body case 2 is closed by the closing member 12, and air does not flow into the suction tool main body case 2 from a place other than the vent hole 16. For this reason, the air quantity required to rotate the rotating brush 4 stably can be flowed to the ventilation flow path 17, and the floor surface can be efficiently cleaned by rotating the rotating brush 4 in a stabilized manner. (See FIG. 1).

On the other hand, when cleaning the wall, the front surface of the suction tool body case 2 is pressed against the wall surface W. Thereby, first, the roller 6 attached to the cover 6 contacts the wall surface W and rotates counterclockwise while the cover 6 is lifted upward, and is stored in the cover storage portion 11 of the suction tool body case 2. And the front portion 3 of the suction port 3 is opened (see FIG. 5). Moreover, in this state, the suction inlet 3 can be made very close to the wall, and sufficient cleaning ability can be obtained against dust on the wall. Further, since the roller 8 whose outer peripheral surface is covered with the raised cloth 10 is brought into contact with the wall surface W instead of the cover 6 itself, the wall surface W, furniture, and the like can be reliably prevented from being damaged.

  At this time, if air flows into the suction tool main body case 2 from the gap between the wall surface W and the cover 6, the rotational force of the rotating brush 4 may be reduced, but the closing member 12 attached to the lower end of the cover 6 is attached. Since the front end of each of the members is bent outward, the closing member 12 and the wall surface W are in close contact with each other as shown in FIG. As a result, since air does not flow into the suction tool main body case 2 from a place other than the vent hole 16, the rotation of the rotary brush 4 can be stabilized. Further, since the rotary brush 4 is located behind the front end portion of the cover 6 and does not have a possibility of contacting the wall surface W, the rotational torque of the rotary brush 4 is prevented from being reduced by the wall surface W contact, and the rotation of the rotary brush 4 is further prevented. Can be stabilized.

  In order to prevent the floor surface from being damaged when the floor suction tool 1 is tilted forward, it is necessary to form a gap between the front lower portion of the suction tool body case 2 and the floor surface. On the other hand, in the present invention, it is necessary to improve the airtightness in the suction tool main body case 2 in order to rotate the rotary brush 4 by the air supplied into the suction tool main body case 2, so that the cover 6 lower side The gap between the tip and the floor is closed by the closing member 12. However, since the closing member 12 is formed of a soft material, there is no possibility of damaging the floor surface even if the closing member 12 contacts the floor surface when the floor suction tool 1 is tilted forward. Moreover, since the front end of the closing member 12 is bent outward, it does not bend inward by the suction force of the floor suction tool 1 and does not come into contact with the rotating brush 4, which may adversely affect the rotation of the rotating brush 4. Nor.

  Since the cover 6 rotates in a direction in which the cover 6 is stored in the cover storage portion 11 formed inside the suction tool main body case 2, the suction tool main body case is compared with a case where the cover 6 rotates outside the suction tool main body case 2. 2 can be lowered, and even when cleaning a low place such as under the bed, there is no problem that the cover 6 does not open due to the cover 6 abutting against an obstacle, and the external force is not affected. It will be a strong structure. Further, since the vent hole 16 is formed at a position avoiding the cover 6 and the cover 6 rotation range of the suction tool main body case 2, the rotating brush 4 can be stably rotated regardless of the rotation state of the cover 6. Can do.

  As described above, when cleaning the wall and returning to the normal floor cleaning, the cover 6 is rotated downward by the urging force of the urging means only by separating the suction tool main body case 2 from the wall surface W and sucking. Since the front portion 3b of the mouth 3 is closed, the normal floor surface can be cleaned without any special operation. The cover 6 can be rotated downward by its own weight alone to close the front side portion 3b of the suction port 3, but by providing an urging means, even if some dust adheres to the rotating portion of the cover 6. The front portion 3b of the suction port 3 can be closed.

It is a sectional side view of the floor suction tool of the best form for implementing this invention. It is a sectional side view of the floor suction tool seen from the other direction. It is a top view of the suction tool for floors. It is a front view of the suction tool for floors. It is a sectional side view of the suction tool for floors, and shows the state which cleans the wall side. It is an enlarged view which shows the state of the closure member in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Floor suction tool 2 Suction tool main body case 2a Upper case 2b Lower case 3 Suction port 3a Lower side part 3b Front side part 6 Cover 12 Closure member 13 Projection 16 Ventilation hole 17 Ventilation flow path

Claims (5)

A suction tool main body case in which the suction port is opened from the lower surface to at least a part of the front surface, a rotating brush rotatably supported in the suction tool main body case via a bearing portion, and a suction port of the suction tool main body case And a cover for closing the front portion of the
The cover is formed to freely rotate between a downward rotation position that closes the front portion of the suction port and an upper rotation position that opens the front portion of the suction port. It is configured to rotate from the lower rotation position to the upper rotation position by the contact of
The suction tool body case is formed with a vent hole at a position avoiding the cover and the rotation range of the cover, and the air sucked into the suction tool body case through the vent hole is guided to a rotating brush and rotated. Form a ventilation channel that rotates the brush,
A closing member made of a soft material that closes the gap between the cover and the floor surface or the flat part is attached to the lower end of the cover, and the cover comes into contact with the flat part and rotates to the upward rotation position. The floor suction tool , wherein the closing member is configured to be in close contact with the flat surface portion in a moved state . The floor suction tool according to claim 1, wherein at least a part of the closing member is bent outward. 3. The floor suction tool according to claim 1, wherein the rotating brush is always positioned rearward of the front end of the cover regardless of the position of the cover that rotates in the vertical direction. The floor suction tool according to any one of claims 1 to 3 , wherein the cover is configured to rotate in a direction in which the cover is housed inside the suction tool body case. The floor suction tool according to any one of claims 1 to 6 , wherein the cover includes a biasing unit that biases the cover in a direction in which the cover rotates downward.

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