JP2761313B2 - Vacuum cleaner floor suction - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floor suction device for a vacuum cleaner having a rotating brush rotated by a motor.

[0002]

2. Description of the Related Art A floor suction tool of this type is generally called a power brush. However, the conventional power brush was designed to be used only for carpet cleaning, and the rotation of the rotating brush was stopped when cleaning the floor.

[0003] The inventor of the present invention has invented a power brush that can be used by rotating and rotating the rotating brush even on a floor surface in Japanese Patent Application No. 21843/1991. In the power brush according to the present invention, the rotating direction of the rotating brush is changed by forward and reverse rotating means in order to properly use the cleaning body mounted on the rotating brush depending on the cleaning surface.

[0004]

Generally, when cleaning a cleaning surface with a floor suction device having a rotating brush, the floor suction device is rotated by rotating the rotating brush when the floor suction device is moved forward. The self-propelled force is applied to reduce the operating force of the floor suction device. Therefore, the rotating direction of the rotating brush is desirably the same on any cleaning surface.

However, in the above-mentioned Japanese Patent Application No. Hei 3-211843, since the rotating direction of the rotating brush is switched depending on the cleaning surface, the operability of the power brush is light in the forward rotation, but the operation of the power brush in the reverse rotation. It was a cause of becoming more serious.

A motor generally used as a drive source for a rotary brush is a commutator motor. When the motor is always used in forward and reverse rotations, there is a problem that the life is shorter than when the motor is used only in forward rotation. there were.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a floor suction device for a vacuum cleaner having a rotary brush having a brush base and a cleaning body such as a brush or a blade mounted thereon . The brush in the hollow portion of the rotating brush.
A lash base is movably provided to provide an outer peripheral surface of the rotating brush.
It arranged projecting more different kinds of the cleaning member, when the rotational speed of the rotary brush becomes large outer peripheral surface of only one of the cleaning member
When the rotation speed of the rotary brush is small, the other cleaning body only projects from the outer peripheral surface.
Ring, is shall such comprises a projecting means consisting of a weight or the like.

[0008]

When the number of rotations of the rotating brush is large when cleaning is performed with the floor suction device configured as described above, one of the cleaning bodies can protrude from the outer periphery of the rotating brush to clean the cleaning surface. When the number of rotations of the rotating brush is small, the other cleaning body projects from the outer periphery of the rotating brush and can clean the cleaning surface.

[0009] One of the cleaning bodies protruding from the rotating body when the number of rotations is high is a cleaning body for carpet cleaning.
When the number of rotations is small, the other cleaning body protruding from the rotator is folded to be a cleaning body for floor cleaning, so that cleaning suitable for each cleaning surface can be performed.

[0010]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a main part of a floor suction tool of the present invention,
FIG. 2 is a sectional view of a main part of the rotary brush, showing a state of the brush base when the rotation speed of the rotary brush is small. 3 is an exploded perspective view of FIG. 2, and FIG. 4 is a view showing a state of the brush base when the number of rotations of the rotating brush is large.

The floor suction tool 1 of the present invention comprises a main body 2 and a sled 3.
, A suction pipe 4 and a cover 5, and a motor 7 as a drive source for rotating the rotating brush 6 is provided inside.
Is mounted, and the motor shaft 7a and the rotating brush 6 are connected by a belt 8. 9 is a front wheel provided on sled 3 and 10
Is the rear wheel. Reference numeral 11 denotes a bumper wound around the outer circumference of the floor suction tool 1.

The rotary brush 6 is configured as shown in FIGS. That is, the shaft 22 is inserted into both ends of the brush base 21 and one end protrudes. Further, a part of both ends of the brush base 21 is cut off the receiving portion 24 of the spring 23. Further, the brush base 21 includes
The cleaning body 2 is perpendicular to the surface of the receiving portion 24 of the spring 23.
5, 26 are fixed. The cleaning body 25 is a brush made of animal hair or synthetic resin fiber to fold and clean the floor, and the cleaning body 26 is made of rubber or PVC blade to clean the surface. . A weight 27 is provided at the center of the brush base 21 on the blade 26 side.

In order to incorporate the brush base assembly 28 having the above structure, the rotating body 29 is formed hollow. The rotating body 29 includes a rotating body A30, a rotating body B31, and a rotating shaft 32.

The rotating body A30 has a semicircular cross section and a gear 33 formed at one end, and a rectangular hole 34 at the top of the semicircle through which the cleaning body 25 fixed to the brush base 21 can move up and down. Is provided. Grooves 35 provided at both ends of the other semicircular rotating body B31 are provided at both ends of the semicircle.
A protrusion 36 is provided for fitting with the projection.

The other semicircular rotating body B31 is formed substantially symmetrically with the rotating body A. That is, a gear 37 is integrally formed at one end, and a rectangular hole 38 in which the cleaning body 26 fixed to the brush base 21 can freely move up and down is provided at the semicircular top.

A hole 24a for retaining the spring 23 is provided on the surface of the spring receiving portion 24 of the brush base 21, and a hole 31a is also provided on the rotating body B31 so as to face the hole 24a.

The protrusion 36 of the rotating body A30 and the groove 35 of the rotating body B31 are fitted between the rotating body A30 and the rotating body B31 with the brush base assembly 28 and the spring 23 interposed therebetween, and are welded or bonded. The brush base assembly 28 is mounted.

The rotating shafts 32 are mounted on both sides of the rotating bodies A30 and B31 fitted as described above, and the rotating brush 6 is formed. The rotating shaft 32 includes rotating bodies A, B, 3
0 and 31 are formed in a disk shape, and one end has a shaft 39.
And a bearing 40 for the shaft 22 of the brush base 21 is provided at the other end. The bearing 40 is a brush base 21
An elliptical groove 41 is formed so that can move up and down freely. The left and right rotating shafts 32 have the same shape.

Next, the operation of the floor suction tool of the present invention will be described. When the floor suction device 1 of the present invention is attached to the end of a hose and an extension tube connected to a vacuum cleaner body (not shown) and a switch (not shown) provided near the hose is turned on, a dust suction motor of the vacuum cleaner body is turned on. And the motor 7 of the floor suction tool 1
Rotates. The rotation of the motor 7 causes the rotating brush 6 to rotate via the belt 8 to suck up dust on the cleaning surface.

At this time, when the number of rotations of the motor 7 is reduced, for example, by setting a strong / weak selector switch provided on the hand switch of the hose to weak, the rotation of the rotating brush 6 becomes small and the cleaning body from the rotating body 29 is a brush base. Since the spring 21 is urged by the spring 23, the cleaning body 25 comes out. The cleaning body 25 is made of a soft brush such as animal hair or synthetic resin fiber, so that the rotating brush 6 can be used.
When the number of rotations is small, it is suitable for folding and floor cleaning.

On the other hand, when the hand switch of the hose is strengthened, the rotation of the rotary brush 6 increases. In this case, the brush base 21 is provided with a weight on the cleaning body 26 side. The weight is adjusted so that when the rotation of the rotating brush 6 is increased, the centrifugal force of the rotating brush 6 is larger than the urging force of the spring 23. Therefore, when the rotation of the rotating brush 6 is large, the shaft 2 inserted on both sides of the brush base 21
2, 22 are bearings 4 provided inside the rotating shafts 32, 32;
The cleaning body 26 slides through the grooves 41, 41 of 0, 40, compresses the spring 23, and the cleaning body 26 comes out of the rectangular hole 38 of the rotating body B31, and the brush 25 on the opposite side is retracted from the rotating body A30.

If the cleaning body 26 is a blade formed of rubber or vinyl chloride, or a brush that is slightly hard, that is, a brush having a large diameter, it is suitable for cleaning the carpet when the rotation speed of the rotating brush 6 is large. Will be.

It is known that the dust-absorbing force can be adjusted regardless of whether the rotation speed of the rotating brush 6 is large or small.

As described above, when the rotation speed of the rotating brush 6 is low, one cleaning body 25 is protruded, and when the rotation speed is high, the other cleaning body 26 is protruded, and one cleaning body 25 is retracted. By switching the number of rotations of the rotating brush 6 according to each cleaning surface, without changing the rotating direction,
It can be cleaned with a cleaning body suitable for the cleaning surface.

[0025]

Since the present invention is configured as described above, it has the following effects.

By switching the number of rotations of the rotating brush corresponding to each cleaning surface, if the number of rotations of the rotating brush is small without changing the rotating direction by the projecting means , only one of the cleaning bodies is projected. it is, when the rotational speed becomes large can be projected only other cleaning member, suitable for cleaning surface
The cleaning body can be automatically protruded without malfunction, and cleaning suitable for the cleaning surface can be reliably performed .

Further, when the rotation speed becomes smaller the fold cleaning body protrudes, a cleaning member for cleaning floors, and cleaning member for carpet cleaning cleaning body protrudes from the rotary body when the rotation speed becomes large Then, cleaning more suitable for each cleaning surface can be performed.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a floor suction tool of the present invention.

FIG. 2 is a sectional view of an essential part of the rotary brush.

FIG. 3 is an exploded perspective view of the same.

FIG. 4 is a diagram illustrating a state of the brush base when the rotation speed of the rotating brush is large.

[Explanation of symbols]

 Reference Signs List 6 rotating brush 21 brush base 23 spring 25, 26 cleaning body 27 weight 30 rotating body A 31 rotating body B 32 rotating shaft 39 shaft 40 bearing 41 groove

Claims (1)

(57) [Claims] 1. A suction tool for a floor of a vacuum cleaner having a rotary brush having a cleaning base such as a brush or a blade mounted on a brush base, wherein the brush is inserted into a hollow portion of the rotary brush.
A lash base is movably provided to provide an outer peripheral surface of the rotating brush.
It arranged projecting more different kinds of the cleaning member, when the rotational speed of the rotary brush becomes large outer peripheral surface of only one of the cleaning member
When the rotation speed of the rotary brush is small, the other cleaning body only projects from the outer peripheral surface.
A floor suction device for a vacuum cleaner, comprising a projecting means comprising a ring, a weight, and the like .