JPH11197071A - Suction tool for floor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve safety by preventing a rotating brush from rotating under a condition where a suction tool is fitted up from a face to be cleaned. SOLUTION: An air intake path 26 for taking open air into a rotating brush storing room 8 is formed in a suction tool main body 1 and guides (the first and the second ribs 21 and 22) for guiding the open air sucked from the air intake path 26 to a brush body 15 and blades 16 of a rotating brush 11 are formed and a bearing part 113 receiving both end parts of a rotating shaft 112 of the rotating brush 11 is constituted so as to move freely up and down and when the rotating brush 11 is lowered to the lowermost position, the rotational trail of the rotating brush 11 and a part of the bottom part side of the rotating brush storing room 8 (the opening edge part 7a of a suction hole 7) are brought into contact with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a floor suction tool used in connection with a vacuum cleaner.

[0002]

2. Description of the Related Art Heretofore, as a floor suction tool of this type, there has been known a suction tool which rotatably supports a rotary brush on a suction tool body and drives the rotary brush to rotate by an electric motor or a turbine.

However, when the rotating brush is driven to rotate by an electric motor, the electric motor is heavy, the handleability at the time of cleaning operation is poor, the number of parts increases, the assembly workability is poor, and the cost is high. There were drawbacks.

[0004] When the rotary brush is driven to rotate by a turbine, the turbine is disposed in a turbine chamber formed in a suction passage from a suction port to a cleaner body, and is rotated by air sucked together with dust. Due to the configuration, there is a problem that dust is clogged in the turbine due to long-term use, and the turbine does not rotate properly.

Therefore, in order to solve the above-mentioned drawback, turbines are arranged at both ends of a rotating brush in Japanese Patent Application Laid-Open No. 9-28630 (A47L9 / 04) or the like, and external clean air is supplied to the turbines. , And suction the air into a vacuum cleaner together with the air sucked from a suction port.

[0006]

However, in the apparatus for rotating the rotary brush using suction air as described above, even if the suction tool is lifted from the surface to be cleaned, it is disposed at both ends of the rotary brush. At least some of the outside air is supplied to the turbine, and the suction air from the suction port hits the rotating brush, so that the rotating brush rotates at a low speed. If the rotating brush is rotating while the suction tool is lifted from the surface to be cleaned in this way, there is a risk of injury by touching the rotating brush with your hand, etc. Even if there was, there was a problem in terms of safety because it felt dangerous.

Accordingly, the present invention has been made to solve such a problem, and the rotating brush is prevented from rotating when the suction tool is lifted from the surface to be cleaned, thereby improving safety. It is an object of the present invention to provide an intended floor suction tool.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a suction tool main body having a suction port on a lower surface, a rotary brush storage chamber formed in the suction tool main body, and A rotating brush that is housed in the rotating brush storage chamber facing the suction port and is driven to rotate using suction air, and a bearing that receives both ends of the rotating shaft of the rotating brush is configured to be vertically movable. The rotating locus of the rotating brush comes into contact with a part of the lower side of the rotating brush storage chamber when the rotating brush is lowered to the lowermost point position.

A suction tool main body having a suction port on a lower surface, a rotary brush storage chamber formed in the suction tool main body, and a rotation rotatably stored in the rotary brush storage chamber facing the suction port. A suction path for taking in outside air into the rotating brush storage chamber, and a guide for guiding the outside air sucked from the suction path to the blades of the rotating brush. A bearing for receiving both ends of the rotating shaft of the brush is configured to be vertically movable, and when the rotating brush is lowered to the lowest point, the rotation locus of the rotating brush and a part of the lower side of the rotating brush storage chamber. Are configured to be in contact with each other.

A suction tool main body having a suction port on a lower surface, a rotary brush storage chamber formed in the suction tool main body, and a rotation rotatably stored in the rotary brush storage chamber facing the suction port. A brush, and the suction tool main body has an intake path for taking in outside air into the rotary brush storage chamber, and a guide for guiding the external air sucked from the intake path to the brush body of the rotary brush. A bearing portion for receiving both ends of the rotating shaft of the rotating brush is configured to be movable up and down, and when the rotating brush is lowered to the lowest point position, a rotation locus of the rotating brush and a part of a lower side of the rotating brush storage chamber. Are configured to be in contact with each other.

Further, there is provided means for moving the rotary brush upward by placing the suction tool main body on the surface to be cleaned and moving the rotary brush downward by lifting the suction tool main body. Things.

In particular, wheels are arranged on both sides in the longitudinal direction of the suction tool main body, and a shaft supporting portion for rotatably supporting the axle of the wheel is configured to be vertically movable, and a bearing portion of the rotating brush is provided on the shaft supporting portion. Is attached.

[0013] A mounting portion for mounting the bearing portion of the rotating brush vertically movably is formed on both side walls in the longitudinal direction of the rotating brush storage chamber.

Further, when the rotary brush is lowered to the lowest point, the rotation locus of the rotary brush and the opening edge of the suction port come into contact with each other.

Further, an elastic member for urging the bearing portion downward is provided.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to FIGS.

As shown in FIG. 1 and the like, a suction tool main body 1 of the present embodiment comprises an upper case 2, a lower case 3, a lid 4 detachably mounted on the upper case 2 and the lower case 3, It comprises a rotating tube 5 rotatably supported in the vertical direction between the cases 2 and 3, and a joint tube 6 rotatably supported in the circumferential direction of the rotating tube 5.

On the bottom surface of the suction tool main body 1, a suction port 7 is formed over substantially the entire width in the longitudinal direction. Inside the suction tool main body 1, a substantially cylindrical rotating brush storage chamber 8 is formed.

As shown in FIG. 2 and FIG. 3, an axle 2 of a front wheel 27 to be described later
A cylindrical shaft support 9 that rotatably supports 7a is attached to be vertically movable within a certain range. These two shaft supports 9
The rotary brush storage chamber 8 side is closed, and a mounting frame 9a to which a bearing 113 of the rotary brush 11 described later is mounted is formed. FIG. 2 shows a normal use state in which the suction tool is placed on the surface to be cleaned and the pivot 9 of the front wheel 27 is raised to the highest position. FIG. 3 shows that the suction tool is lifted from the surface to be cleaned. This shows a state in which the shaft support 9 of the front wheel 27 has been lowered to the lowest point position.

A rotary brush 11 is rotatably stored in the rotary brush storage chamber 8 so as to face the suction port 7. As shown in FIG. 1, the rotating brush 11 includes a core 12 and a pair of brushes 1 which are mounted by inserting a base 14 into a spiral groove 13 formed in the core 12.
5 and a pair of blades 16 which are also mounted by inserting the base 18 into the spiral groove 13 of the core 12.

The core 12 is formed by extruding aluminum, and the four grooves 13 arranged at equal intervals are formed in a helical shape such that they are shifted from each other by about 90 °. Therefore, the brush body 15 and the blade 16 inserted into these grooves 13 also have a similar spiral shape. Further, the pair of brush bodies 15 and the blades 16 are arranged so that the same kind of brush bodies and the blades are symmetrically located at 180 ° apart from each other, so that the balance at the time of rotation is improved and the rotation is smooth. .

The brush body 15 is formed of nylon or polyethylene resin, and the length up to the tip is such that the tip reaches the tip of a carpet or the like to be sucked when cleaning a carpet or the like with hairy feet. Is formed shorter than the blade 16 described below.

On the other hand, the blade 16 includes a cloth 17 having a fine texture that is hard to pass air, a base 18 formed by molding a synthetic resin at one end of the cloth 17, and a cloth 17. Brush-like body 1 sewn to the other end (tip) of the brush
9. The cloth-like body 1 is formed by forming a base 18 molded with a synthetic resin on the cloth-like body 17.
7 is deformed so as to undulate, and further, a brush-like body 19 is sewn to the tip of the cloth-like body 17 so that the cloth-like body 1
7 is bent to one side as if pulled. The blade 16 is mounted on the core body 12 so as to be curved backward with respect to the rotation direction (counterclockwise direction in the figure) of the rotating brush 11.

When the rotation of the rotating brush 11 is stopped or at a low speed, the blade 16 rotates the rotating brush 1.
Although it is curved backward with respect to the rotation direction 1 (counterclockwise in the figure), when the rotating brush 11 is in a high-speed rotation state,
As shown in FIG. 1, the centrifugal force caused by the rotation causes the brush body 15 to be in an upright state. It is also formed so as to contact with. Also,
When the rotary brush 11 is stopped, the brush body 15 and the blade 16 are formed so as not to contact the floor surface even when the suction tool main body 1 is placed on the floor surface.

As shown in FIGS. 2 and 3, both ends of the rotary brush 11 hold both ends of the core body 12 and hold the brush body 15 and the blade 16 mounted in the groove 13 to prevent lateral displacement. The cap 111 is covered so as to fit in the groove 13. This holding cap 111 has a rotating shaft 112
The rotating shaft 112 is mounted on the bearing 11.
3 is rotatably mounted. It is to be noted that no turbine is provided at both ends of the rotating brush 11 as shown in the figure, and the rotating brush 11 is driven to rotate by a configuration described later.

The bearing portion 113 is mounted on a mounting frame 9a formed inside the shaft support portion 9 of the front wheel 27, whereby the rotary brush 11 can move up and down within a certain range together with the front wheel 27. I have. Therefore, in FIG. 2 showing the normal use state in which the suction tool is placed on the surface to be cleaned and the shaft support 9 of the front wheel 27 is raised to the highest position, the rotating brush 1 is used.
3 also shows a state in which the suction tool 1 is also lifted from the surface to be cleaned and the shaft support 9 of the front wheel 27 is lowered to the lowest point position, in FIG. 11 also goes down to the lowest point position.

A projection 11 is provided on the upper surface of the mounting frame 9a.
5, a projection 116 is also formed on the rear surface of the lid 4 located above the coil spring 5, and a coil spring 117 is mounted between them so that the bearing 113 is urged downward. In addition to the weight of the suction tool main body 1, the rotating brush 11, and the front wheel 27, the coil spring 117 is considered in consideration of the fact that dust and the like are likely to enter the vertical movement mechanism and increase the friction. When the suction tool is placed on the surface to be cleaned, an urging force that ensures the state shown in FIG. 2 and the state shown in FIG. 3 when the suction tool is lifted from the surface to be cleaned are selected. The present invention is not limited to the above-described coil spring 117, but may be another elastic member, and the mounting structure is not limited to the above.

On the other hand, a guide port 20 is formed on the upper surface of the lid 4 so as to extend over substantially the entire width of the brush body 15 and the blade 16 of the rotary brush 11 in the longitudinal direction. On the front side of the guide port 20, a first rib 21 is formed which serves as a guide for guiding outside air sucked from the guide port 20 to the brush body 15 and the blade 16 of the rotating brush 11. The first rib 21 is formed so as to hang slightly from the rear surface side of the lid 4 to a position closer to the center of rotation than the foremost position of the rotation trajectory of the brush body 15 and the blade 16, and to a position that does not contact the maximum rotation trajectory of the blade 16. Has been extended.

Also, a second rib 22 is formed on the rear side of the guide opening 20 to form a guide for guiding outside air sucked from the guide opening 20 to the brush body 15 and the blade 16 of the rotating brush 11. The second rib 22 extends from the center of rotation of the rotating brush 11 to the front side and has a distal end bent downward.
A discharge port 23 is formed between the two tips.

The upper part of the discharge port 23 is covered with a cover 24 so that the discharge port 23 is not directly visible from outside. The cover body 24 is attached to the lid body 4 by locking the front and rear locking claws 25 into the claw holes 25a formed in the upper edge of the first rib 21 and the second rib 22. ing. As shown in FIG. 5, the cover 4 to which the cover body 24 is attached can be removed by operating the knobs 4a provided on both sides to the outside. Thus, the rotating brush 11 and the like can be maintained.

The above-described guide port 20, first rib 21, second guide 21
An intake path 26 is formed by the ribs 22 and the cover body 24, and the intake path 26 is configured so that the width gradually decreases from the guide port 20 to the discharge port 23.

On the other hand, the front wheel 2 mounted on the shaft support 9
Reference numeral 7 is formed to have substantially the same diameter as the external shape of the suction tool main body 1 formed in a substantially cylindrical shape. On the other hand, the suction tool body 1
A rear wheel 28 having a small diameter is rotatably supported at the rear portion. A suction keeper 29 made of soft rubber or the like is provided before and after the suction port 7.
The suction keeper 29 improves the deep suction force. Further, a bumper 30 made of soft rubber or the like is provided on the front surface of the suction tool main body 1 having a substantially cylindrical shape. The tool body 1 itself can be prevented from being damaged.

When the above-described joint pipe 6 of the suction tool body 1 is connected to a cleaner body (not shown) via a flexible hose and an extension pipe, and the electric blower of the cleaner body is driven, the suction port 7 is opened. Air is sucked. When the suction tool main body 1 is lifted from the surface to be cleaned, most of the air is sucked from the suction port 7 because the suction resistance from the suction port 7 is small. In this state, since the suction port 7 is largely open, the flow velocity of the air sucked from the suction port 7 is relatively low,
The rotating brush 11 is located at the lowest point as shown in FIG. 3 by its own weight, the weight of the front wheel 27, and the downward biasing force of the coil spring 117, and its maximum rotation locus is shown in FIG. 4), the rotary brush 11 does not rotate because it is located at a position in contact with the opening edge 7a of the suction port 7 as indicated by a broken line. Accordingly, there is no danger of injury even if a hand or the like touches the rotating brush 11, and there is no danger in appearance, so that safety is remarkably improved.

On the other hand, when the suction tool is placed on the surface to be cleaned to clean the floor surface such as a flooring or the surface to be cleaned such as a carpet,
Since the suction tool main body 1 sinks by its own weight against the urging force of the coil spring 117, the rotary brush 11 relatively rises in the rotary brush storage chamber 8, and its maximum rotation locus is determined by the suction port 7.
Since it comes to a normal position not in contact with the opening edge 7a, the rotating brush 11 becomes rotatable.

Here, when cleaning the floor surface such as a flooring, since the gap between the surface to be cleaned and the suction port 7 is relatively wide, the suction resistance from the suction port 7 is relatively small.
, Almost no air is sucked in from the guide port 20. In this state, since the air sucked from between the suction port 7 and the surface to be cleaned has a high flow velocity, the air sucked from the suction port 7 hits the brush body 15 and the blade 16 of the rotating brush 11 and the rotating brush 11
Is rotated counterclockwise in FIG.

In this case, the brush body 15 is easy to allow air to pass through, but is formed so as not to be in contact with the floor surface such as a flooring, so that it functions to rotate the rotary brush 11 to some extent. On the other hand, since the blade 16 is curved rearward in the rotation direction of the rotating brush 11 as described above when the rotating brush 11 is in the rotation stopped state or in the low-speed rotating state, the air sucked from the suction port 7 is The rotating brush 11 rotates efficiently because the air is difficult to pass through using the cloth 17 which is easy to receive and has a fine texture.

When the rotating brush 11 rotates at a high speed, the blade 16 is erected by the centrifugal force as shown in FIG. When the blade 16 is in the upright state, the brush-like body 19 sewn to the tip of the cloth-like body 17 comes into contact with the floor surface, so that wiping and polishing can be performed. In addition, blade 1
6 uses the easily deformable cloth-like body 17, so that even if it touches the floor surface, it does not damage the floor surface.

On the other hand, when cleaning the surface to be cleaned such as a carpet or the like, the suction port 7 is covered with the surface to be cleaned, the intake resistance from the suction port 7 increases, and the amount of outside air sucked from the guide port 20 decreases. Increase. Since the discharge port 23 has an extremely small opening area as compared with the suction port 7, the air sucked from the discharge port 23 flows at a higher flow rate than the above-described suction port 7 at the brush body 15 of the rotating brush 11. The rotating brush 11 is rotated counterclockwise in FIG.
When the rotating brush 11 rotates, dust such as lint on the surface to be cleaned, such as a carpet, is beaten out by the brush body 15 and the blade 16, is scraped off, and is sucked into the cleaner body.

Here, the first port located in front of the discharge port 23
As described above, the rib 21 is used for the brush body 15
6 is formed so as to hang slightly near the center of rotation from the forefront position of the rotation locus of 6, so that the outside air sucked from the discharge port 23 goes around the front of the rotary brush 11 without colliding with the brush body 15 or the blade 16. Thus, the rotating brush 11 can be efficiently and rotationally driven.

Similarly, the second port located on the rear side of the discharge port 23
The ribs 22 also extend from the center of rotation of the rotating brush 11 to the front side, and the tips are bent downward.
6 can be prevented from being directly sucked into the rotating tube 5 by passing above the rotating brush 11 without colliding with the rotating brush 6, and can be reliably guided to the brush body 15 and the blade 16, so that the rotating brush 11 can be efficiently moved. It can be driven to rotate.

The outside air from the guide port 20 is discharged to the discharge port 23.
Is configured so that the width gradually decreases toward the discharge port 23, so that the generation of noise due to a change in the area of the ventilation path is reduced, and the brush body 15 and the blade 16 The rotational efficiency of the rotating brush 11 can be improved by increasing the flow velocity of the outside air colliding with the rotating brush 11.

Further, since the rotating brush storage chamber 8 is formed in a substantially cylindrical shape, the first rib 21 and the second rib 2 are formed.
Since the outside air that has been guided by 2 and collides with the brush body 15 and the blade 16 is not diverged but smoothly wrapped around and continues to apply a rotational force, the rotating brush 11 can be driven to rotate more efficiently.

Further, since the suction passage 26 has the guide port 20 on the upper surface of the suction tool main body 1, even when cleaning the wall or the like, the suction is not blocked by the wall or the like. Rotational force can always be applied to the blade 15 and the blade 16 at a good flow rate.

As a secondary effect, by sucking air from the guide port 20, the suction tool main body 1 is prevented from excessively sticking to the surface to be cleaned, and the mobility of the suction tool main body 1 is improved. be able to.

When cleaning a carpet or the like as described above,
The surface to be cleaned having hairs acts as a resistance, and the rotation speed of the rotating brush 11 decreases. However, when the rotation speed of the rotating brush 11 decreases, the blade 16 gradually stops at a stop due to a decrease in centrifugal force. It curves backward with respect to the direction of rotation so as to restore its shape, the contact resistance with the surface to be cleaned is reduced, and the number of rotations is increased. By repeating this operation, the rotation speed of the rotating brush 11 is maintained substantially constant.

That is, since the blade 16 is formed by sewing the brush-like body 19 to the cloth-like body 17, the blade 16 can be configured to be easily bent, and the brush-like body 19 is used as a weight by centrifugal force. The blade 16 can be easily erected, and the blade 16 can be erected and curved even by a slight change in the number of revolutions of the rotating brush 11, so that the number of revolutions of the rotating brush 11 can be maintained substantially constant.

When the suction tool is lifted from the surface to be cleaned while cleaning the floor surface such as the flooring, the carpet, or the like, the rotating brush 11 causes its own weight, the weight of the front wheel 27, and the urging force of the coil spring 117 to rotate as shown in FIG. As shown in FIG. 7, the maximum rotation locus of the rotary brush 11 comes into contact with the opening edge 7a of the suction port 7, so that the rotary brush 11 rotating by inertia is braked, and Stop rotation. Therefore, as described above, the rotating brush 11
There is no danger of injuries even if hands are touched, and there is no danger in appearance, so that the safety is significantly improved in this case as well.

According to the present embodiment, the rotating brush 1
1 and the front wheel 27 move up and down integrally, so that even if the rotating brush 11 moves up and down, the front wheel 27 of the rotating brush 11
, And the contact state of the rotating brush 11 with the surface to be cleaned does not change, so that the same dust collection performance as when not moving vertically can be obtained. Further, since the weight of the front wheel 27 and the urging force of the coil spring 117 are applied to the weight of the rotating brush 11, the force for bringing the rotating brush 11 into contact with the opening edge 7 a of the suction port 7 is increased, and the rotating brush 11 is securely held. It can be stopped immediately.

Further, by stopping the rotating brush 11 by contacting the opening edge 7a of the suction port 7, the rotating brush 11 can be brought into contact with the entire width in the longitudinal direction of the rotating brush 11 with a simple configuration without providing a separate brake piece or the like. So you can
The rotating brush 11 can be stopped efficiently.

The rotary brush 11 can be moved up and down by its own weight and the weight of the front wheels 27 without the coil spring 117 to reduce the cost. Bearing part 113
Is urged downward, so that the sucked dust
Thus, there is no problem in that the rotating brush 11 cannot be lowered to the lowest point position by its own weight or the like due to being caught by the vertical movement mechanism 13, and the rotating brush 11 can be stopped more reliably.

According to the floor suction tool of the present embodiment,
Without having turbines at both ends of the rotating brush 11,
Since the rotary brush 11 can be efficiently rotated and driven only by the brush body 15 and the blade 16, it is possible to reduce the weight and size of the floor suction tool and to reduce the cost. Further, since there is no turbine at both ends of the rotating brush 11, the suction port 7 can be formed over substantially the entire width of the bottom surface of the suction tool main body 1, so that dust such as lint does not remain.

As described above, the rotary brush 11 is driven to rotate without using the turbine.
1 is configured to be easily rotated as described above, but if configured to be easily rotated, it becomes easy to rotate even when the suction tool is lifted from the surface to be cleaned. It is particularly effective to prevent rotation when lifted from the surface to be cleaned.

FIGS. 6 to 8 show another embodiment of the present invention, in which the same reference numerals as those of the above-mentioned embodiment indicate the same or corresponding parts. Note that other drawings are the same as those of the above-described embodiment, and thus are omitted.

In the above embodiment, the shaft support 9 of the front wheel 27
Is configured to be vertically movable, and the rotating brush 1
Although the rotating brush 11 is moved up and down by attaching the one bearing portion 113, in this embodiment, the front wheel 27 is fixed and only the rotating brush 11 is configured to be vertically movable.

That is, as shown in FIGS. 6 and 7, the bearing portion 113 of the rotating brush 11 in this embodiment is provided with the partition ribs 10 erected from the lower case 3 and suspended from the lid 4.
It is mounted in a mounting groove 114 formed in the up and down direction on the inside, and is vertically movable within the range of an upper rib 114a and a lower rib 114b.

Further, the bearing portion 113 has its lower side extended to a length close to the radius of rotation of the rotating brush 11, and has a contact surface 1 on its bottom surface that contacts a surface to be cleaned such as a carpet.
18 are formed.

FIG. 6 shows that the suction tool for floor is placed on the surface to be cleaned and the rotary brush 11 is normally set in the rotary brush storage chamber 8, and the rotation locus of the rotary brush 11 is as shown in FIG. 6 (b). FIG. 7 shows a normal use state in which the suction tool 7 is not in contact with the opening edge 7a of the suction port 7. FIG. 7 shows that the suction tool is lifted from the surface to be cleaned, and the rotating brush 11 is lowered to the lowest point position. The state in which the rotation locus contacts the opening edge 7a of the suction port 7 as shown in FIG. FIG. 6 shows a state in which the tip of the blade 16 of the rotating brush 11 is in contact with a floor surface such as a flooring and the rotating brush 11 is pushed upward.

As described above, the rotating brush 11 of the present embodiment
When the suction tool is placed on the surface to be cleaned, the brush body 15 and the blade 16 of the rotating brush 11 and the contact surface 118 below the bearing portion 113 come into contact with a floor surface such as a flooring or a surface to be cleaned such as a carpet. Since the coil spring 117 is used to be pushed up, a coil spring having a not so large urging force is used.

Even with the above configuration, when the suction tool main body 1 is lifted from the surface to be cleaned, the rotating brush 11 is urged by its own weight and the downward biasing force of the coil spring 117.
As shown in FIG. 7, the rotary brush 11 is located at the lowest point, and its maximum rotation locus is in a position in contact with the opening edge 7 a of the suction port 7 as shown by a broken line in FIG. Does not rotate. Accordingly, there is no danger of injury even if a hand or the like touches the rotating brush 11, and there is no danger in appearance, so that safety is remarkably improved.

Also, when the suction tool is lifted from the surface to be cleaned while cleaning a floor surface such as a flooring or a carpet,
The rotating brush 11 is lowered to its lowest point as shown in FIG. 7 by its own weight and the urging force of the coil spring 117, so that the maximum rotation locus of the rotating brush 11 is determined by the opening edge 7a of the suction port 7.
Rotating brush 1 that comes into contact with and rotates by inertia
1 is braked and stops rotating rapidly. Therefore, as described above, there is no danger of injury even if the hand or the like touches the rotating brush 11, and there is no danger in appearance, so that the safety is significantly improved in this case as well.

On the other hand, when cleaning the floor surface such as a flooring, the tip of the blade 16 of the rotating brush 11 comes into contact with the floor surface and the rotating brush 11 is lifted upward as shown in FIG. As shown in FIG. 5, the maximum rotation locus of the rotary brush 11 does not contact the opening edge 7a of the suction port 7, so that the rotary brush 11 is efficiently rotated by the same operation as that of the above-described embodiment, and the floor surface is wiped or polished. be able to.

When cleaning the surface to be cleaned such as a carpet,
The brush body of the rotating brush 11 has a brush tip of a carpet or the like to be sucked.
5, blade 16 and abutment surface 118 below bearing portion 113
, So that the rotating brush 11 is pushed up, so that it can be efficiently rotated in the same manner as described above to strike out or scrap off dust such as lint on the surface to be cleaned such as a carpet.

Further, the rotating brush 11 pushes the brush body 15, the blade 16 and the contact surface 118 below the bearing 113 against the surface to be cleaned, such as a carpet, against its own weight and the urging force of the coil spring 117. As a result, the hair is lifted to a position corresponding to the length of the bristle feet. Therefore, the brush body 15 and the blade 16 are maintained in an appropriate contact state with the surface to be cleaned, so that the dust such as lint on the carpet can be beaten or scraped off, and the contact resistance (rotational load) is further increased. There is no lock and it can be locked.

Further, since the bearing portion 113 is urged downward by the coil spring 117, as described above, the rotating brush 11 is appropriately adjusted to the type of the surface to be cleaned and the height of the rotating brush 11 is adjusted to the type of the surface to be cleaned. When the dust is sucked, the dust is caught in the vertical movement mechanism of the bearing portion 113 and is caught in the middle, and the rotating brush 11 repeatedly moves up and down due to movement or vibration during cleaning and makes a rattling sound. Can be prevented. It should be noted that the present invention also provides a coil spring 11 as described above.
It is not limited to 7, but may be another elastic member,
Also, the mounting structure is not limited to the above.

Further, a contact surface 118 is formed below the bearing portion 113 so as to contact a surface to be cleaned such as a carpet.
Since the contact surface 118 functions effectively as a sensor for detecting the surface to be cleaned and as a drive unit for moving the rotary brush 11 to a height corresponding to the type of the surface to be cleaned, as compared with the brush body 15 and the blade 16, It is possible to respond quickly and flexibly to the type of the surface to be cleaned.

FIG. 9 is a view showing still another embodiment of the present invention, wherein the same reference numerals as those of the above-mentioned embodiment indicate the same or corresponding parts. Note that other drawings are the same as those of the above-described embodiment, and thus are omitted.

In the above embodiment, the bearing 113 of the rotary brush 11 movably provided up and down is urged downward by an elastic member such as a coil spring 117. In the present embodiment, the elastic member such as a coil spring is used. Instead of using a member, the rotating brush 11 is urged downward only by its own weight.

This eliminates the need for an elastic member such as the coil spring 117 of the above embodiment,
Since it is not necessary to form 5 and 116, the configuration and handling are extremely simplified, and further cost reduction can be achieved.

If the elastic member such as the coil spring 117 is not used, the operation and effect as described in the above embodiment, that is, the sucked dust is caught in the vertical movement mechanism of the bearing portion 113 and is caught in the middle. However, there is a problem in that an effect of preventing the rotating brush 11 from repeating up-and-down movements and rattling due to movement or vibration during cleaning cannot be obtained, but the weight of the rotating brush 11 is appropriately increased. By doing so, those problems can be reduced.

In each of the above embodiments, when the rotating brush 11 is lowered to the lowest point, the rotation locus of the rotating brush 11 and the opening of the suction port 7 which is a part of the lower side of the rotating brush storage chamber 8 are opened. Although the edge portion 7a is configured to be in contact with the rotary brush storage chamber 8, the rotary brush storage chamber 8 may be in contact with another lower side part thereof. A brake piece or the like that comes into contact with the rotation locus of the rotating brush 11 when the wheel 11 has moved down to the lowest point may be separately attached.

In each of the above embodiments, the rotating brush 1
Although one is provided with a pair of brush bodies 15 and two types of blades 16 each, a total of four, one of them can be rotated. The number of sheets is not limited to four, but if the number of sheets is increased too much, the interval between them becomes narrower, and the area that the sucked outside air hits becomes smaller. Is best.

The brush body 15 or the blade 16
May be a blade made of a non-breathable material having soft elasticity, specifically, a soft polyvinyl chloride (PVC), a soft rubber (for example, urethane rubber), or the like. Power can be increased.

Although the rotary brush 11 can be moved up and down even if the rotary brush 11 is driven to rotate by turbines provided at both ends thereof, the turbine is not required in each of the above embodiments. Therefore, the configuration for moving the rotating brush 11 up and down becomes simpler.

Further, in each of the above-described embodiments, the suction port 26 is provided by forming the guide port 20 on the upper surface of the lid 4.
The gap between the front bottom surface and the surface to be cleaned may be wider than the other, and the gap may be used as an intake path. In this case, the outside air sucked from the front gap at the front edge of the suction port 7 is supplied to the brush body 15 or the blade 16 below the rotation center of the rotating brush 11.
Is formed, the rotary brush 11 can be driven to rotate efficiently.

By the way, the configuration as described above is as follows.
As described above, the present invention is particularly effective when applied to the rotating brush 11 of each embodiment that does not use a turbine.
Even if the present invention is applied to a suction tool having turbines at both ends, the same operation and effect can be obtained in terms of safety.

[0076]

As described above, according to the present invention, in a floor suction tool provided with a rotary brush which is driven to rotate by utilizing suction air, a bearing for receiving both ends of a rotary shaft of the rotary brush is moved up and down. The suction tool can be cleaned by freely configuring the suction brush by contacting the rotation locus of the rotation brush with a part of the lower side of the rotation brush storage chamber when the rotation brush is lowered to the lowest point position. In a state where the rotating brush is lifted from the surface, the rotating brush moves down to the lowest point, and the rotating brush comes into contact with a part of the lower side of the rotating brush storage chamber. Therefore, the rotating brush does not rotate. Stop. Therefore, there is no danger of injury even if a hand or the like touches the rotating brush, and there is no danger in appearance, so that safety is remarkably improved.

Further, an intake path for taking in outside air into the rotary brush storage chamber is formed in the suction tool main body, and a guide for guiding the external air sucked from the intake path to the blade of the rotary brush is formed. The bearings for receiving both ends of the rotating shaft are configured to be movable up and down, and when the rotating brush is lowered to the lowest point, the rotation locus of the rotating brush and a part of the lower side of the rotating brush storage chamber come into contact. In addition to the above effects, the rotary brush can be driven to rotate without providing turbines at both ends of the rotary brush, so that the floor suction device can be reduced in weight and size and cost can be reduced. Can be. Further, since there is no turbine at both ends of the rotary brush, the suction port can be formed over substantially the entire width of the bottom surface of the suction tool main body, so that dust such as lint does not remain. Also,
Since the turbine is not used, the rotating brush itself must be configured to be easily rotated.However, if the rotating brush is configured to be easily rotated, it is easy to rotate even when the suction tool is lifted from the surface to be cleaned. It is particularly effective not to rotate when lifted.

In addition, an intake passage for taking in outside air into the rotary brush storage chamber is formed in the suction tool main body, and a guide for guiding the external air sucked from the intake passage to the brush body of the rotary brush is formed. And a bearing portion that receives both ends of the rotating shaft is configured to be movable up and down, and when the rotating brush is lowered to the lowest point position, the rotation locus of the rotating brush contacts a part of the lower side of the rotating brush storage chamber. With such a configuration, the same effect as described above can be obtained.

Further, it is preferable to provide a means for moving the rotary brush upward by placing the suction tool main body on the surface to be cleaned, and for moving the rotary brush downward by lifting the suction tool main body.

In particular, wheels are arranged on both sides in the longitudinal direction of the suction device main body, and a shaft supporting portion for rotatably supporting the axle of the wheel is configured to be vertically movable, and the bearing portion of the rotating brush is mounted on the shaft supporting portion. Even if the rotating brush moves up and down, the height position of the rotating brush with respect to the wheel does not change and the contact state of the rotating brush with the surface to be cleaned does not change, so the same dust collection performance as when not moving up and down Is obtained. In addition, since the weight of the wheel is added to the weight of the rotating brush, the rotating brush can be reliably stopped.

Further, by forming mounting portions for vertically mounting the bearing portion of the rotary brush on both side walls in the longitudinal direction of the rotary brush storage chamber, the rotation at the time of lifting the suction tool can be simplified. The function of stopping the brush can be realized.

Further, when the rotating brush is lowered to the lowest point, the rotating locus of the rotating brush and the opening edge of the suction port are in contact with each other. Since the rotating brush can be brought into contact with the entire width in the longitudinal direction with a simple configuration, the rotating brush can be stopped efficiently.

Further, by providing the elastic member for urging the bearing portion downward, there is a problem that the sucked dust is caught by the vertical movement mechanism of the bearing portion and cannot be lowered to the lowest point position by its own weight. As a result, the rotating brush can be stopped more reliably.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a central portion according to an embodiment of the present invention.

FIG. 2 is a diagram for explaining the configuration and operation of the embodiment.
(A) is a partial longitudinal sectional view seen from the front, and (b) is a longitudinal sectional view seen from the side.

3A and 3B are diagrams for explaining the configuration and operation of the embodiment, wherein FIG. 3A is a partial vertical cross-sectional view as viewed from the front, and FIG. 3B is a vertical cross-sectional view as viewed from the side.

FIG. 4 is a bottom view of the embodiment.

FIG. 5 is also a top view.

6A and 6B are diagrams for explaining the configuration and operation of another embodiment of the present invention, wherein FIG. 6A is a partial vertical cross-sectional view as viewed from the front, and FIG.
Is a longitudinal sectional view seen from the side.

7A and 7B are diagrams for explaining the configuration and operation of the embodiment, wherein FIG. 7A is a partial vertical cross-sectional view as viewed from the front, and FIG. 7B is a vertical cross-sectional view as viewed from the side.

FIG. 8 is a bottom view of the embodiment.

FIG. 9 is a partial longitudinal sectional view of a further embodiment of the present invention as viewed from the front.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suction tool main body 4 Lid 7 Suction port 8 Rotary brush storage room 9 Shaft support 9a Mounting frame 10 Partition rib 11 Rotary brush 15 Brush body 16 Blade 17 Cloth body 19 Brush-like body 20 Guide opening 21 First rib 22 Second Rib 23 Discharge port 26 Intake path 112 Rotary shaft 113 Bearing part 114 Mounting groove 117 Coil spring 118 Contact surface

Claims (8)

[Claims] 1. A suction tool main body having a suction port on a lower surface, a rotary brush storage chamber formed in the suction tool main body, and a suction air stored in the rotary brush storage chamber facing the suction port. A rotating brush that is rotatably driven by the rotating brush, and a bearing portion that receives both ends of the rotating shaft of the rotating brush is configured to be movable up and down, and the rotating brush rotates when the rotating brush is lowered to a lowermost point position. A floor suction device characterized in that the locus is in contact with a part of the lower side of the rotating brush storage chamber. 2. A suction tool main body having a suction port on a lower surface, a rotary brush storage chamber formed in the suction tool main body, and a rotation rotatably stored in the rotary brush storage chamber facing the suction port. A suction path for taking in outside air into the rotating brush storage chamber, and a guide for guiding the outside air sucked from the suction path to the blades of the rotating brush. A bearing for receiving both ends of the rotating shaft of the brush is configured to be vertically movable, and when the rotating brush is lowered to the lowest point, the rotation locus of the rotating brush and a part of the lower side of the rotating brush storage chamber. A floor suction tool characterized in that the suction tool is configured to contact with the floor. 3. A suction tool main body having a suction port on a lower surface, a rotary brush storage chamber formed in the suction tool main body, and a rotation rotatably stored in the rotary brush storage chamber facing the suction port. A brush, and the suction tool main body has an intake path for taking in outside air into the rotary brush storage chamber, and a guide for guiding the external air sucked from the intake path to the brush body of the rotary brush. A bearing portion for receiving both ends of the rotating shaft of the rotating brush is configured to be movable up and down, and when the rotating brush is lowered to the lowest point position, a rotation locus of the rotating brush and a part of a lower side of the rotating brush storage chamber. A floor suction tool characterized in that it is configured to contact with a floor. 4. A means for moving the rotary brush upward by placing the suction tool main body on the surface to be cleaned and moving the rotary brush downward by lifting the suction tool main body. The floor suction tool according to any one of claims 1 to 3. 5. A wheel is disposed on both sides in the longitudinal direction of the suction tool main body, and a shaft supporting portion rotatably supporting an axle of the wheel is configured to be vertically movable, and a bearing portion of the rotating brush is provided on the shaft supporting portion. The floor suction tool according to any one of claims 1 to 4, further comprising: 6. A mounting portion for mounting the bearing portion of the rotary brush vertically movably on both side walls in the longitudinal direction of the rotary brush storage chamber. The suction tool for floor according to 1. 7. The apparatus according to claim 1, wherein when the rotary brush is lowered to a lowermost point position, a rotation trajectory of the rotary brush contacts an opening edge of the suction port. Item 7. A floor suction device according to any one of Items 6. 8. The floor suction tool according to claim 1, further comprising an elastic member for urging the bearing portion downward.