JPS649847B2 - - 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 In conventional bed nozzles of this type, the rotating brush generally had bristles planted on the outer circumferential surface of the rotor, and the overall diameter was quite large. . 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 has been considered 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 be reduced, making cleaning easier. There was a fundamental problem with the floor nozzle that its capacity decreased. Furthermore, as a means of reducing the overall diameter while ensuring a sufficient length of bristles, it is conceivable to twist two metal wires to form a core wire and attach the bristles to this core wire. However, with this method, string-like dust such as lint and hair wraps deep inside the brush bristles, making it extremely difficult to remove.

OBJECTS OF THE INVENTION The present invention solves these conventional drawbacks, and aims to downsize the rotating brush and, by extension, the floor nozzle, while maintaining a good brushing effect.

Structure of the Invention The present invention provides a rotary brush that is rotatably driven by a drive source in a floor nozzle main body, and this rotary brush includes a rotor having a groove formed in the longitudinal direction on its outer circumferential surface, and a groove in the rotor. It consists of brush bristles that are planted on the bottom and whose tips protrude from the outer circumferential surface of the rotor.
Also, a gap is provided between the brush bristles and the groove wall of the recessed groove to serve as a deflection space for the brush bristles.

Therefore, the overall diameter of the rotating brush can be reduced by the length of the bristles facing into the grooves, and the bristles can also be set to a length that can provide a sufficient brushing effect. In addition, the string-like dust wraps up to the outer circumferential surface of the rotor,
Since it does not reach the root of the brush hair in the groove, it can be removed relatively easily.

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

In Figs. 1 to 3, a floor nozzle body 1 is obtained by connecting upper and lower body members 3 and 4 via a bumper 2, and a suction port 5 with a lower open part in its front interior is provided. 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.
Reference numeral 10 denotes a rotating brush provided in parallel to the suction chamber 6, with a part of the brush bristles 11 implanted in the rotor 10' protruding outside through the suction port 5; and 12, the suction chamber 6; 13 is a fixed brush mounted parallel to the rear of the suction port 5; 14 and 15 are fixed brushes 14 and 15 mounted on the floor to position the suction port 5 at a constant distance from the surface to be cleaned; These are wheels provided at the front and rear of the nozzle body 1.

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 of the chamber. The suction joint 16 rotates while closing the rear opening of the turbine chamber 7, and the connection port 17 is displaced up and down 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 (on the right side in FIG. 1). 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 ventilation holes 28,
an opening 33 that selectively communicates with either one of 29;
is formed. Reference numeral 34 designates the switching lever 30, and 35 designates 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 that has flowed from the suction chamber 6 to the vent 28 collides with the turbine 22, and then flows from the connection port 17 of the suction joint 16 to the connection tube 20 to the extension pipe to 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 raised and lowered, so no matter what the worker's posture is, the suction port 5 of the floor nozzle body 1 can be cleaned easily. It faces the surface and ensures dust suction.

Now, as mentioned above, the rotating brush 10 has brush bristles 11 attached to the rotor 10'.
Its structure is such that a groove 39 is formed in the longitudinal direction of the rotor 10', and brush bristles 11 are planted at the bottom of the groove 39. Of course, brush hair 1
The tip of the brush bristles 11 protrudes from the outer peripheral surface of the rotor 11', and a gap 10b is provided between the bristles 11 and the groove wall 10a of the groove 39 so as not to inhibit the deflection of the bristles 11. has been set.

Therefore, the diameter of the rotary brush 10 can be made smaller by the amount that faces into the groove 39 of the brush bristles 11, and the overall length of the bristles 10 can be made sufficiently similar to the conventional one, so that the brushing effect can be improved. It is something that can be made into a good one.

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

Effects of the Invention As explained above, the present invention uses a rotating brush in which a concave groove is formed in the rotor and brush bristles are planted at the bottom of the groove, so the following excellent effects can be expected. It is something.

By reducing the overall diameter of the rotating brush, the floor nozzle can be made thinner. Therefore, it is possible to easily clean under furniture, etc., and the cleaning ability of the floor nozzle can be improved.

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 that rotates it only needs to be of low output, and as a result, the floor nozzle can be made even thinner and more compact.
Moreover, it is very advantageous in terms of cost and weight reduction.

String-like dust such as lint and hair can be removed relatively easily since it wraps up to the outer peripheral surface of the rotor and does not reach the roots of the brush bristles. Therefore, the function as a rotating brush can be maintained well.

[Brief explanation of drawings]

FIG. 1 is a top view of a floor nozzle according to an embodiment of the present invention with the upper main body member removed, FIG. 2 is a sectional view, and FIG. 3 is an exploded perspective view of a suction joint attachment portion. 1... Floor nozzle body, 10... Rotating brush, 1
0'...Rotor, 11...Brush bristles, 39...Concave groove.

Claims (1)

[Claims] 1. A rotating brush rotatably driven by a drive source is provided in the floor nozzle main body, and this rotating brush is installed in a rotor having a groove formed in the longitudinal direction of the outer peripheral surface, and in the bottom of the groove of the rotor, A floor nozzle for a vacuum cleaner comprising brush bristles whose tips protrude from the outer circumferential surface of a rotor, and a gap is provided between the bristles and the groove wall of a concave groove to serve as a deflection space for the bristles. .