JPS59203527A - Floor nozzle for electric cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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 its 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 became. 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 was considered to shorten the length of the brush bristles, but in this case, the elasticity of the bristles would not be as effective in scraping up the carpet surface, resulting in a decrease in cleaning performance1. It's gone.

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 made small, 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. That is, in this type of floor nozzle, when the surface to be cleaned is a carpet or similar, the rotating plan 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 plan 40 is rotated.
The rotation is stopped and cleaning is performed by suction. Therefore, the tatami mats and floor surfaces were sucked in while being cleaned. For example, some cement dust enters and adheres to the concave grooves 2 of the rotary plan 4, and even when the rotary brush 4 is rotated when cleaning a carpet, the adhered dirt remains in the grooves despite the generation of rotational speed centripetal force. A problem arose. The amount of adhesion will no longer increase once it reaches an equilibrium state, but as the weight balance of the rotating brush 4 is disrupted, a force generated by the unbalanced amount will act on the bearing of the directional rotating brush 4, shortening 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 provides a rotary brush by forming grooves in the longitudinal direction of the rotor, planting brush bristles at the bottom of the grooves, and filling the grooves with a softening filler. The diameter of the rotating brush is reduced by the length of the brush bristles facing into the groove.
In addition, the effect of raking up 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. A suction chamber 16 with a lower opening as a suction port 15 is formed in the front interior, and a turbine chamber 17 is formed in the rear interior. Turbine chamber 1
7 is separated from the suction chamber 16 by a partition wall 18, and the rear portion having an opening 19 is formed in the shape of a circular arc.

A rotating brush 20 is rotatably mounted in the suction chamber 16 parallel to the suction port 16, 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 16, and 23 and 24 are fixed brushes installed at the front and rear of the bottom nozzle 12 in order to position the suction port 15 at a constant distance from the surface to be cleaned. There are two front wheels and two rear wheels.

Reference numeral 26 denotes a substantially cylindrical suction joint rotatably attached to the rear inner surface of the turbine chamber 17. A cylindrical connection port 26 protrudes rearward from a part of its peripheral wall, and a ring 27 is connected to the suction joint 26. A floor nozzle pipe 28 is rotatably attached therebetween. An extension pipe communicating with the suction side of the vacuum cleaner via a hose is detachably connected to the floor nozzle pipe 28.

29 is disposed in the turbine chamber 17, and part of its outer periphery is surrounded by the suction joint 26. In this turbine, the shaft body 3 passes through the rotating shaft on one side of the suction joint 26 and protrudes outside the turbine chamber 17.
0 is provided integrally.

31i1″1: A belt for power transmission, which transmits the rotation of the turbine 29 to the rotating brush 20 via the pulley 32.

Further, the turbine 29 is arranged so as to be biased towards the side of the turbine chamber 17 where the belt 31 is arranged. 33 and 34 are two ventilation holes formed in the partition wall 18, one of which is the ventilation hole 33 that opens the bin 2 in the evening.
Opposed to the lower half of 9 [-1 The other vent 34 is not facing the turbine and directly faces the connection port 26 of the suction joint 25 [-1]
-I am.

36 is a switching lever, and a shielding plate 36 protrudes from a part of the switching lever.
An opening 37 is formed in the opening 37 which communicates alternatively with either one of the vent holes 33, 34.

Reference numeral 38 designates a switching knob integrally formed with the switching lever 36 , which projects outside through 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 26 relative to the upper floor nozzle 12 is restricted by the distance between the stoppers 40.degree. 41, which are formed respectively.

Now, the rotating brush 2o includes a rotor 43 provided with a groove 42, brush bristles 44 planted in the groove 42, and +1ψ (chemical filler) filled in the groove 42 after the bristles 44 are installed. 46. The grooves 42 are twisted approximately 180 degrees from one end of the rotor 43 to the other end, and are provided in pairs symmetrically with respect to the rotation center axis.

Further, when the rotating brush 20 is rotated, the tips of the brush bristles 44 are formed to protrude from the suction port 16.

In the above configuration, now slide the switching lever 36 to the right in FIG.
3, the suction air flowing through the suction port 15 - suction chamber 16 - ventilation port 33 collides with the turbine 29, and then passes through the connection port 26 of the suction joint 25 → the floor nozzle pipe 28 →
It flows from the extension pipe to the hose to reach the vacuum cleaner.

Therefore, the turbine 29 rotates, and its rotational force is transmitted to the rotating brush 20 after deceleration.

When the opening 37 of the shielding plate 36 is communicated with the other vent 34 via the groove switching lever 36, the suction air is transferred to the turbine 2.
9 flows through the turbine chamber 17 and reaches the suction joint 25, so the turbine 29 and rotation plan 20 do not rotate.

Note that during cleaning work, the floor nozzle 11 is connected to the suction joint 25.
Since the floor nozzle 11 can be raised and lowered freely, the suction port 16 of the floor nozzle 11 faces the surface to be cleaned, and dust can be sucked reliably despite the worker's awkward posture.

Now, as mentioned earlier, the rotating brush 2o is constructed by planting the brush bristles 44 at the bottom of the groove 42 of the rotor 43 and filling them with a softening filler 45. Of course, the bristles 44
The tip thereof protrudes from the outer peripheral surface of the soft filler 46 and the rotor 43.

Therefore, the outer diameter of the rotary plan 20 can be made smaller by the amount that faces into the groove 42 of the brush bristles 44. In other words, in order to maintain the effect of scraping 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 filler 45 is soft, the filler 4
This is because the elasticity of the brush bristles 44 in the buried portions is less likely to be impaired by the brush bristles 44, and therefore, the same brushing effect as before can be obtained with the same amount of protrusion.

In addition, since the grooves 42 are filled with the softening filler 45, there is no phenomenon in which dust adheres to the grooves 42. Therefore, the weight balance of the rotating brush 2o is disrupted due to the attachment, and the life of the bearings 21, etc. will not become shorter.

In the above embodiment, a turbine was used as the drive source for the rotating brush, but it is also possible to use a motor, and the drive source is not specified.

Effects of the Invention As described above, in the present invention, grooves are formed in the rotor, brush bristles are implanted at the bottom of the grooves, and the brush is filled with a softening filler material. This can be expected to have significant effects.

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 dust to be sucked does not enter the groove and adhere to it. Therefore, the life of the floor nozzle can be extended.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a rotating brush in a conventional example, and Fig. 2 is an upper floor 11 of a floor nozzle in an embodiment of the present invention.
・Floor nozzle body, 20...Rotating grand, 42...
... Concave groove, 43 ... Rotor, 44 ... Brush bristles, 45 ... Filler.

Claims (1)

[Claims] 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 planted in the bottom of the groove, the tips of which protrude beyond the outer circumferential surface of the rotor. and a soft filler filled in the groove.