JPH0376929B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a floor nozzle for a vacuum cleaner used in general households.

Conventional Structure and Problems Conventionally, this kind of floor nozzle has been provided with a lip piece made of a flexible material such as rubber in parallel to the dust suction part. The above-mentioned lip piece has the function of setting an air tight part in a part of the gap between the bottom of the floor nozzle and the surface to be cleaned to concentrate the suction airflow, thereby improving the dust suction characteristics.

However, the floor nozzle equipped with the above-mentioned lip piece has a major problem in that the concentration of the suction airflow causes the nozzle to come into close contact with the surface to be cleaned, making it difficult to operate. In particular, in recent vacuum cleaners, the suction power (suction power) has become stronger, and the above-mentioned operability problem has become even more serious.

OBJECTS OF THE INVENTION The present invention solves these conventional drawbacks and aims to provide a floor nozzle that is easy to use.

Structure of the Invention The floor nozzle of the vacuum cleaner of the present invention comprises a floor nozzle body having a dust suction part on the floor surface, and a flexible material that protrudes downward from the bottom surface of the floor nozzle body and is arranged parallel to the dust suction part. The brush body is provided with a lip piece, a vertically movable brush body in which the dust suction part and the lip piece are provided back and forth between them, and a brush adjustment body for vertically adjusting the brush body, and the brush body is controlled by the brush adjustment body. Adjustments are made in the first position where the front brush body is not protruding and the rear brush body is in a protruded state lower than the height of the lip piece, and in the second position where the front and rear brush bodies are protruded to approximately the same position as the height of the lip piece. , the front and rear brush bodies are set in the third position, protruding higher than the height of the lip.

Therefore, in the first and second positions, a strong dust suction force can be obtained due to the action of the tight piece, and in the third position, the adhesion force of the floor nozzle body to the surface to be cleaned can be reduced, making it easier to operate. It is something.

Description of examples Examples thereof will be described below with reference to the accompanying drawings.

In FIGS. 1 to 7, reference numeral 1 denotes a floor nozzle body constructed by connecting upper and lower nozzle members 2 and 3 via a bumper 4, and the rear central part thereof is formed into a circular shape and is connected to a suction joint 5. It is pivotably mounted on the substantially cylindrical portion 6 of the cylindrical portion 6 so as to be vertically movable. Reference numeral 7 denotes moving wheels disposed near and below the pivot point of the floor nozzle body 1 relative to the suction joint 5. In addition, the lower nozzle member 3 of the floor nozzle body 1 has a suction port 8 and a dust suction section 10 that extends left and right from the suction port 8 and has a suction groove 9 whose outer end is open. A lip piece 11 made of a flexible material such as rubber is provided, which is also parallel to the dust suction part 10 and is located between the rear slit-shaped opening 10'. . A pair of brush bodies 12 and a brush adjusting body 13 for vertically moving the brush bodies 12 are provided within the floor nozzle body 1.
The brush body 12 has a structure in which brushes 15 are installed in a bundle on a brush holder 14, and guide holes 16 formed at both ends of each brush holder 14 are fitted into bosses 17 protruding from the upper nozzle member 2. It is held so that it can move up and down. brush 15
As the nozzle moves up and down, it appears and disappears below the floor nozzle body 1 through the slit-like opening 11.

The main body 18 of the brush adjustment body 13 has a frame shape, and is held by the upper and lower nozzle members 2 and 3 so as to be slidable left and right, and cam grooves 19 are formed on the front and rear, left and right sides of the main body 18. is formed. These cam grooves 19 are set so that there are three levels of height difference in the horizontal direction. 20 is a shaft protruding from the left and right sides of each brush body 12 and fitted into the cam groove 19, respectively; 21 is an operator of the brush adjustment body 13, which faces outward from the window hole 22 of the upper nozzle member 2; be.

On the other hand, the suction joint 5 has a bent tubular connecting part 23 rotatably connected to the rear thereof, and a notch opening 24' is formed in a part of the peripheral wall of the substantially cylindrical part 6. 24 is a locking recess formed on one side of the substantially cylindrical portion 6, and 25 is a locking piece integrally formed with the brush adjustment body 13, and these are positioned so as to face each other. The locking piece 25 engages with the locking recess 24 only when the brush adjustment body 13 is slid to the rightmost position in FIG. 2, and apart otherwise.

26 is an extension tube detachably connected to the connecting portion 23; 27 is an elastic piece that is integrally formed with the brush adjustment body 13 and has a claw 28 at its tip; There are three recesses provided in the.

In the above configuration, dust from the surface to be cleaned is
It flows into the floor nozzle main body 1 through the suction port 8 and the suction groove 9 extending left and right from this, and then flows from the suction joint 5 to the connection part 23 to the extension pipe 26 to reach the vacuum cleaner.

Next, the adjustment of the brush body 12 according to the surface to be cleaned will be described. First, when the surface to be cleaned is a carpet as shown in FIG. 5, the brush adjustment body 13 is slid to the left end in FIGS. 2 and 4 via the operator 21. However, the shaft 20 is guided to the highest position of the cam groove 19 and the brush 1 of the front brush body 12
5 is sunk into the lower body member 3 as shown in FIG. 5, and the rear brush 15 comes to protrude lower than the height of the lip piece 11.

In this state, the lip piece 11 comes into elastic contact with the carpet surface and closes the rear of the dust suction section 10, thus restricting the suction direction to the side and the front, resulting in a strong suction airflow. It is. At this time, the rear brush 15 responds to the advance of the floor nozzle body 1 and scrapes up the dust entangled in the hair of the carpet. The dust thus stirred up is sucked into the dust suction section 10 when the floor nozzle main body 1 is retreated.

Further, when cleaning folds, etc., and when a strong suction force is desired, the brush adjustment body 13 is slid to the right and the shaft 20 is guided to the middle and high position of the cam groove 19. Here, the brush 1 of the front and rear brush bodies 12
5, both of which protrude to approximately the same height as the lip piece 26, resulting in the state shown in FIG. Also here, since the lip piece 26 is in contact with the top surface of the fold, a strong suction force can be obtained.

Furthermore, if you want to reduce the operating force by using a weak suction force during cleaning such as folding, slide the brush adjustment body 13 to the right one more step, guide the shaft 20 to the lower position of the cam groove 19, and thereby, As shown in FIG.
make it stand out. In the state shown in Fig. 7, the lip piece 26 comes to float above the upper surface of the fold, so air is dispersed and sucked from all around the dust suction section 10, and the force with which the floor nozzle body 1 is attracted to the fold becomes weaker. .

By the way, when the brush 15 is in the state shown in FIGS. 5 and 6, the floor nozzle main body 1 can be raised or lowered with respect to the suction joint 5, and is kept parallel to the surface to be cleaned. However, the vertical configuration of the floor nozzle body 1 is not preferable under the condition shown in FIG. 7 in which the brush 15 is long and protrudes. That is, in FIG. 7, the floor nozzle body 1 is held only by the brush 15, and therefore, when a pushing force is applied to the extension tube 26 to move the floor nozzle body 1 forward, the rear part of the floor nozzle body 1 is held by that force. When the brush 15 is bent, the floor nozzle main body 1 is raised forward, and when it is moved backward, it returns to a state parallel to the surface to be cleaned. For this reason, the floor nozzle body 1 wobbles as it moves back and forth. However, in this embodiment, when the brush adjusting body 13 is slid to the rightmost end in order to maximize the amount of protrusion of the brush 15, the locking piece 25 integrated therewith engages with the locking recess 24, and the suction joint The floor nozzle main body 1 is fixed relative to the nozzle 5, so that the above-mentioned wobbling is prevented.

Further, the brush adjustment body 13 is slidable, but in the above three positions, the claw 2 of the elastic piece 27 is
8 are each brought into elastic contact with one of the recesses 29 to maintain the position.

Effects of the Invention As described above, in the present invention, since the brush body is moved up and down relative to the lip piece, effective cleaning suitable for each occasion can be performed, and the suction force on the surface to be cleaned can be increased as necessary. By weakening it, the operability can be significantly improved. Also, especially when cleaning carpets, etc., the rear brush body scrapes up dust entangled in the bristles.
Reliable dust suction is possible, and since the rear brush body is located above the lip, there is no significant movement resistance.

[Brief explanation of drawings]

Fig. 1 is an upper perspective view of a floor nozzle showing an embodiment of the present invention, Fig. 2 is a top view with the upper nozzle member removed, Fig. 3 is an exploded perspective view of the main part, and Fig. 4 is the same main part. A partial sectional view and FIGS. 5 to 7 are side sectional views for explaining the operation. 1... Floor nozzle body, 10... Dust suction part, 11...
... lip piece, 12 ... brush body, 13 ... brush adjustment body.

Claims (1)

[Claims] 1. A floor nozzle body having a dust suction part on the floor surface; a lip piece made of a flexible material that protrudes downward from the bottom surface of the floor nozzle body and is arranged parallel to the dust suction part;
It is equipped with a vertically movable brush body with dust suction parts and lip pieces provided in the front and back, and a brush adjustment body for vertically adjusting the brush body, and the brush body is adjusted by the front brush. A first position in which the body is not protruding and the rear brush body is in a protruding state lower than the height of the lip piece; a second position in which the front and rear brush bodies protrude to approximately the same position as the height of the lip piece; The floor nozzle of a vacuum cleaner is set in the third position, protruding higher than the lip height.