JPS649849B2 - - 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 its problems Conventionally, in this type of floor nozzle, the rotating brush was simply a rotor with brush bristles planted on the outer circumferential surface of the rotor, and the overall diameter was quite large. was. Therefore, 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 is possible to shorten the length of the brush bristles, but in this case, the brushing effect (the effect of scraping up the carpet surface with the elasticity of the bristles) will decrease, and the cleaning ability will decrease. There was a fundamental problem with the floor nozzle.
Another idea was to shorten the brush bristles and make the rotor thinner, but this also became impractical because hair and threads would become more likely to get wrapped around the rotor.

Furthermore, Fig. 1 shows a rotating brush devised to eliminate such conventional drawbacks, in which grooves b are formed in the length direction of the rotor a, and brush bristles c are planted at the bottom of the grooves b. By doing so, the length of the brush bristles c is made long enough for the brushing effect, and the diameter of the rotor a is ensured so that hair and threads are less likely to get entangled, and the length of the brush bristles c facing into the concave groove b is increased. The diameter of the rotating brush is reduced by the same amount.

However, in this case as well, since grooves b are formed in the rotor a, the rotor a itself becomes thinner at the grooves b, and further brush bristles c are placed at the bottom of the rotor a, which prevents cracks. It has the disadvantage of being easily weakened in terms of strength, such as bending.

Purpose of the Invention The present invention solves these conventional drawbacks, and aims to reduce the size of the rotating brush and, by extension, the floor nozzle, while ensuring the strength of the rotor and maintaining a good brushing effect. It is.

Structure of the Invention The present invention forms a non-through hole on the outer periphery of a rotor that is larger than the diameter of the pilot hole for bristle planting, and configures a rotating brush by planting brush bristles at the bottom of the hole, and the bristles are planted at the bottom of the non-through hole. The diameter of the rotating brush is made smaller by the length of the brush bristles, the length of the bristles is sufficient for the brushing effect, and the strength of the rotor is prevented from decreasing.

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

In Figures 2 to 4, a floor nozzle body 1 is obtained by connecting upper and lower body members 3 and 4 via a bumper 2, and the front interior thereof has a suction port 5 with a lower opening. A chamber 6 and a turbine chamber 7 are formed in the rear interior. The turbine chamber 7
is separated from the suction chamber 6 by a partition wall 8, and the rear portion having an opening 9 is set in an arc shape. 10 is provided in the suction chamber 6 in parallel with this,
A rotating brush in which a part of the brush bristles 11 installed on the rotor 10' protrudes outside through the suction port 5; 12 is a bearing of the rotating brush 10 provided on both side walls of the suction chamber 6; 13; 14 and 15 are fixed brushes installed parallel to the rear of the suction port 5, and vehicles provided at the front and rear of the floor nozzle body 1 to position the suction port 5 at a constant distance from the surface to be cleaned.

Reference numeral 16 denotes a substantially semi-cylindrical suction joint that rotatably slides on the rear inner surface of the turbine chamber 7, and a connection port 17 is formed from a part of its peripheral wall. More specifically, the suction joint 16 has a shaft 18 and a hollow shaft 19 that protrude outward from the side wall of the suction joint 16.
It is pivoted on both side walls. The suction joint 16 rotates while closing the rear opening 9 of the turbine chamber 7, and the connection port 17 is displaced vertically within the opening 9 accordingly. 20 is connection port 1
7 shows a connecting tube that is rotatably attached via a ring 21, and an extension tube (not shown) that communicates with the suction side of the vacuum cleaner via a hose is detachably connected thereto. .

Reference numeral 22 designates a turbine that is installed in the turbine chamber 7 and whose outer periphery is partially surrounded by the suction joint 16. A shaft body 23 extends from one side of the turbine through the hollow shaft 19 of the suction joint 16 and projects to the outside of the turbine chamber. It is integrally protruded. 24 is a bearing of the shaft body 23 fixed to the floor nozzle body 1, and 25 is a power transmission bearing stretched between a small pulley 26 provided at the tip of the shaft body 23 and a large pulley 27 provided on the rotating brush 10. It's a belt. That is, the rotation of the turbine 22 is transmitted to the rotating brush 10 at a reduced speed.

Further, the turbine 22 is provided offset to one side of the turbine chamber 7. (Figure 2 right side). Reference numerals 28 and 29 indicate two vent holes formed in the partition wall 8, one vent 28 facing the lower half of the turbine 22, and the other vent 29 not facing the turbine 22 but directly It is centrally opposed to the connection port 17 of the suction joint 16. Reference numeral 30 denotes a switching lever biased in one direction by a spring 31, and a shielding plate 32 protruding from a part thereof has the above-mentioned ventilation holes 28, 2.
An opening 33 that selectively communicates with either one of the openings 9 is formed. 34 is a knob of the switching lever 30;
Reference numeral 35 denotes a leaf spring that cooperates with a protrusion 36 formed on the switching lever 30 to maintain the operating state of the switching lever 30 against the spring 31.

The rotation range of the suction joint 16 with respect to the floor nozzle body 1 is determined by the stopper 3 formed by each
7 and 38.

In the above configuration, if the switching lever 30 is now slid to the right in FIG.
The suction air flowing through the suction chamber 6 → the vent 28 collides with the turbine 22, and then flows through the connection port 17 of the suction joint 16 → the connection tube 20 → the extension pipe → the hose to reach the vacuum cleaner. Therefore, the turbine 22 rotates, and its rotational force is transmitted to the rotating brush 10 after deceleration.

Furthermore, when the opening 33 of the shielding plate 32 is communicated with the other vent 29 via the switching lever 30, the suction air flows through the turbine chamber 7 and reaches the suction joint 16 regardless of the turbine 22.
The turbine 22 and the rotating brush 10 do not rotate.

During cleaning work, the floor nozzle body 1 can move up and down with respect to the suction joint 16, that is, it can be moved up and down, so no matter what the worker's posture is, the suction port 5 of the floor nozzle body 1 can be cleaned. It faces the surface and ensures dust suction.

Now, as mentioned above, the rotating brush 10 has bristles 11 attached to the rotor 10'.
Its structure is such that a plurality of independent non-through holes 39 larger than the pilot hole diameter of the bristles 11 are formed in the longitudinal direction of the outer circumference of the rotor 10, and the brush bristles 11 are planted in the bottoms of the non-through holes. ing. A space is provided between the brush bristles 11 and the inner circumferential surface of the non-penetrating hole 39 so that the brush bristles 11 can freely bend. Of course, the tips of the brush bristles 11 protrude from the outer peripheral surface of the rotor 11'.

Therefore, the diameter of the rotating brush 10 can be reduced by the amount of the bristles 11 facing into the non-through holes 39, and the overall length of the bristles 11 can be made sufficiently long as in the conventional case, which improves the brushing effect. It can also be made into a good one. In addition, since the non-through hole 39 is not formed at the base of the brush bristles 11, the rotor 10' is not thin in other parts, so that the rotor 10' is strong.

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.

In addition, as shown in FIG. 5, grooves 4 are formed in the longitudinal direction.
Even if the rotor 10' has a non-through hole 39 formed in its bottom surface, the groove 4
Since the bottom surface of 0 can be formed shallowly, it is possible to obtain the same effect, and it is also possible to use them in combination.

Effects of the Invention As explained above, the present invention uses a rotating brush in which a non-penetrating hole is provided on the outer periphery of the rotor that is larger than the pilot hole diameter of the bristles, and bristles are planted in the bottom of the hole. Excellent effects can be expected.

By reducing the overall diameter of the rotating brush, the floor nozzle can be made thinner, making it easier to clean under furniture and increasing the cleaning ability of the floor nozzle.

The length of the brush bristles itself can be set to a sufficient length, and a better brushing effect can be obtained.

The small diameter of the rotating brush allows its rotational torque to be reduced. Therefore, the drive source for rotating the nozzle only needs to have a small output, so that the floor nozzle can be made even thinner and more compact.

Compared to conventional rotating brushes, the strength of the rotor decreases less, and the lack of strength and durability caused by the miniaturization of the floor nozzle is eliminated.

[Brief explanation of drawings]

Fig. 1 is a side view of a rotating brush in which a groove is formed in the rotor and bristles are planted at the bottom of the groove, and Fig. 2 is a side view of the upper body member of a floor nozzle showing an embodiment of the present invention. A top view of the removed state, Figure 3 is a cross-sectional view,
FIG. 4 is an exploded perspective view of a suction joint attachment part, and FIG. 5 is a sectional view of a rotating brush in another embodiment. 1... Floor nozzle body, 10... Rotating brush, 1
0'...rotor, 11...brush hair, 39...hole,
40...concave groove.

Claims (1)

[Claims] 1. A rotary brush that is rotationally driven by a drive source is provided in the floor nozzle main body, and this rotary brush includes a rotor in which a plurality of bottomed holes are independently formed in the longitudinal direction of the outer peripheral surface, and a rotor that is rotatably driven by a drive source. It consists of brush bristles that are planted at the bottom of each hole of the rotor and whose tips protrude from the outer peripheral surface of the rotor, and the same brush bristles are placed between the brush bristles and the inner peripheral surface of the hole. A vacuum cleaner floor nozzle with a bending space. 2. A floor nozzle for a vacuum cleaner according to claim 1, wherein a hole is formed at the bottom of a concave groove continuously formed in the longitudinal direction of the rotor.