JPS6361014B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a floor nozzle for a vacuum cleaner equipped with a rotating brush.

Conventional structure and problems Conventionally, in this type of floor nozzle, the rotating brush was simply a rotor with bristles planted on the outer circumferential surface of the rotor, and the outermost diameter was quite large. It was becoming. For this reason, the height of the floor nozzle inevitably becomes large, which becomes an obstacle when cleaning underneath furniture and the like. In order to solve this problem, it has been considered to shorten the length of the brush bristles, but in this case, the elasticity of the bristles would be less effective in scraping up the carpet surface, resulting in a decrease in cleaning ability.

Therefore, recently, a floor nozzle has been devised in which a groove 2 is formed in the longitudinal direction of the rotor 1 as shown in FIG. 1, and brush bristles 3 are planted at the bottom of the groove 2 to form a rotating brush 4. . With this, the outer diameter of the rotating brush 4 as a whole can be reduced, and at the same time, the necessary length of the brush bristles can be ensured. However, this also has the problem that dust adheres to the groove 2 while the floor nozzle is in use. In other words, in this type of floor nozzle, when the surface to be cleaned is a carpet or similar surface, the rotating brush 4 is rotated to scrape up and suck the dust, and when the surface to be cleaned is a tatami mat or a floor surface, the rotating brush 4 is rotated. Cleaning is performed by stopping the rotation of the brush 4 and using suction. Therefore, the tatami mats and floor surfaces were suctioned during cleaning. For example, some cement dust enters and adheres to the concave groove 2 of the rotating brush 4, and even if the rotating brush 4 is rotated when cleaning the carpet, it will not adhere even though the rotating centrifugal force is generated. The problem arose that it remained the same. The amount of adhesion does not increase once it reaches an equilibrium state, but since the weight balance of the rotating brush 4 is disrupted, a force generated by the unbalanced amount acts on the bearing of the rotating brush 4, resulting in shortening of the life of the bearing. It was causing problems.

OBJECTS OF THE INVENTION The present invention eliminates these conventional drawbacks and aims to downsize the rotating brush and, by extension, the floor nozzle.

Structure of the Invention The present invention forms concave grooves in the longitudinal direction of the rotor,
Brush bristles are planted at the bottom of this groove, and this groove is further filled with a softening filler to form a rotating brush.The diameter of the rotating brush is equal to the length of the bristles facing into the groove. In addition, the raking effect of the carpet surface due to the elasticity of the brush bristles is not impaired because it is filled with a soft filler, and it also prevents dust from adhering to the grooves.

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

In FIGS. 2 to 4, the floor nozzle main body 11 is constructed as follows. That is, 12 is an upper floor nozzle, and 13 is a lower floor nozzle, which are connected via a bumper 14 that prevents damage when coming into contact with furniture or the like. Inside the front, there is a suction chamber 16 with a lower opening as the suction port 15, and inside the rear there is a turbine chamber 17.
are formed respectively. The turbine chamber 17 is separated from the suction chamber 16 by a partition wall 18, and the rear portion having an opening 19 is formed in an arc shape.

A rotating brush 20 is rotatably mounted in the suction chamber 16 in parallel with the suction port 15, and is rotatably held by bearings 21 disposed on both side walls of the suction chamber 16.

22 is a fixed brush installed parallel to the suction port 15 behind the suction port 15, and 23 and 24 are fixed brushes installed at the front and rear of the lower floor nozzle 12 in order to position the suction port 15 at a constant distance from the surface to be cleaned. There are two wheels each on the front and rear wheels of the car.

Reference numeral 25 denotes a substantially cylindrical suction joint rotatably attached to the rear inner surface of the turbine chamber 17. A cylindrical connection port 26 projects rearward from a part of the peripheral wall of the suction joint 25. A floor nozzle pipe 28 is rotatably attached. An extension pipe communicating with the suction side of the vacuum cleaner via a hose is detachably connected to the floor nozzle pipe 28.

Reference numeral 29 denotes a turbine disposed in the turbine chamber 17 and having a part of its outer periphery surrounded by a suction joint 25, and a shaft body 30 that protrudes outside the turbine chamber 17 through a rotating shaft on one side of the suction joint 25 is integrated. It is set in.

A power transmission belt 31 transmits the rotation of the turbine 29 to the rotating brush 20 via a pulley 32.

Further, the turbine 29 is connected to the belt 3 of the turbine chamber 17.
It is arranged so as to be biased towards the 1st arrangement side. 33, 34
are two vent holes formed in the bulkhead 18, one vent 33 facing the lower half of the turbine 29, and the other vent 34 not facing the turbine, directly connecting the connection port 26 of the suction joint 25. is facing.

Reference numeral 35 denotes a switching lever, and a shielding plate 36 protruding from a portion thereof has an opening 37 that selectively communicates with either one of the vent holes 33 and 34. Reference numeral 38 denotes a switching knob integrally formed with the switching lever 35 , which projects outward from an opening 39 provided in the upper floor nozzle 12 and serves as an operating portion of the switching lever 35 .

Further, the rotation range of the suction joint 25 with respect to the upper floor nozzle 12 is determined by a stopper 40 formed by each
41 intervals.

Now, the rotating brush 20 includes a rotor 43 provided with a groove 42, and brush bristles 4 installed in the groove 42.
4, and a soft filler 45 filled in the groove 42 after the brush bristles 44 are installed. The groove 42 extends approximately from one end of the rotor 43 to the other end.
They are twisted 180 degrees and are provided in pairs symmetrically with respect to the central axis of rotation.

Further, when the rotating brush 20 is rotated, the tips of the brush bristles 44 are formed to protrude from the suction port 15.

In the above configuration, if the switching lever 35 is now slid to the right in FIG.
The suction air that has flowed from → suction chamber 16 → vent 33 collides with the turbine 29, and then the suction joint 25
The connection port 26 → floor nozzle pipe 28 → extension pipe → hose leads to the vacuum cleaner. Therefore, the turbine 29 rotates, and its rotational force is transmitted to the rotating brush 20 after deceleration.

Furthermore, when the opening 37 of the shielding plate 36 is communicated with the other vent 34 via the switching lever 35, the suction air flows through the turbine chamber 17 regardless of the turbine 29 and reaches the suction joint 25, so that the turbine 29 and the rotation The brush 20 does not rotate.

Note that during cleaning work, the floor nozzle 11 can be raised and lowered with respect to the suction joint 25, so that the suction port 1 of the floor nozzle 11 can be moved up and down regardless of the worker's posture.
5 faces the surface to be cleaned and is capable of reliably sucking dust.

Now, as mentioned earlier, the rotating brush 20 is constructed by planting the brush bristles 44 at the bottom of the concave groove 42 of the rotor 43 and filling them with a softening filler 45. Of course, the tips of the bristles 44 are protrudes from the outer peripheral surfaces of the soft filler 45 and the rotor 43.

Therefore, the outer diameter of the rotating brush 20 can be reduced by the amount of the bristles 44 facing into the grooves 42. That is, in order to maintain the effect of brushing up the carpet surface with the elasticity of the brush bristles (brushing effect), it is necessary to keep the amount of protrusion of the brush bristles 44 in the outer circumferential direction from the implanted part constant. According to the embodiment, since the filling portions 45 are soft, the elasticity of the brush bristles 44 in the portions buried by each filler 45 is less likely to be impaired, and therefore, the same brushing effect can be achieved with the same amount of protrusion as in the past. This is because it can be obtained.

In addition, since the groove 42 is filled with the softening filler 45, there is no phenomenon in which dust adheres to the groove 42, and therefore, the weight balance of the rotating brush 20 is disrupted due to the attachment, and the life of the bearing 21 etc. is shortened. It does not become shorter.

In the above embodiment, a turbine is used as a drive source for the rotating brush, but other motors may be used, and the drive source is not specified.

Effects of the Invention As described above, the present invention forms a concave groove in the rotor, implants brush bristles at the bottom of the concave groove, and fills it with a softening filler to form a rotating brush. The effects can be expected.

1. The floor nozzle can be made smaller by reducing the overall diameter of the rotating brush.

2. Since the groove is filled with a soft filler, the suctioned dust does not enter and adhere to the groove. Therefore, the life of the floor nozzle can be extended.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view of a rotating brush in a conventional example.
FIG. 2 is a top view of the floor nozzle in an embodiment of the present invention with a part of the upper nozzle removed, FIG. 3 is a sectional view of the same, and FIG. 4 is a sectional view of a rotating brush. 11... Floor nozzle body, 20... Rotating brush,
42...concave groove, 43...rotor, 44...brush bristles, 45...filler.

Claims (1)

[Claims] 1 A rotating brush is provided in the floor nozzle body, and the rotating brush includes a rotor having a groove formed in the longitudinal direction, and brush bristles that are planted at the bottom of the groove and whose tips protrude from the outer peripheral surface of the rotor. and a soft filler filled in the groove.