Abstract:
A vacuum cleaner includes a housing having a suction opening disposed between front and rear brushes for sucking dirt from a floor. A rag disposed behind the rear brush is rotatably driven about a transverse axis by the reciprocal action of the housing as the latter is displaced along the floor. A water supply keeps the rag moist. The rag is driven such that the floor-engaging portion is driven in a direction opposite the direction of housing travel. An auxiliary opening in the suction line sucks dirt from the rag at a location above the floor.

Description:
FIELD OF THE INVENTION 
     The present invention relates to a vacuum cleaner. 
     BACKGROUND OF THE INVENTION 
     The conventional vacuum cleaner has a simple function of sucking the dust adhered on a floor or carpet by utilizing the strong sucking power of a sucking motor. However, for some articles such as carpet which is impossible to wash at home, the conventional vacuum cleaner can not perform an effective cleaning. 
     In an attempt to give a solution to the above described problem, a vacuum cleaner (as shown in FIG. 4) has previously been developed, and this vacuum cleaner is constituted such that: a water reservoir C is disposed between a dust collecting section A and a driving section B; an extended tube E is connected to the leading end of a hose D (connected to the dust collecting section A); and a plurality of head sections F such as a dust sucking port, a water sucking port and the like are provided on the leading end of the extended tube E, thereby making it possible to use them selectively depending on the requirement. 
     Meanwhile, Japanese Utility Model Publication No. Sho-57-189546 proposes a shampoo type cleaner, as shown in FIG. 5, constituted such that: a cleaning brush G and a water blocking brush G&#39; are installed at the lower end of a head section F; a washing water supplying tube H and a detergent supplying tube H&#39; are formed on the top of the cleaning brush G in order to supply water and detergent; and a sucking mouth I is formed along the sides of the tubes H,H&#39;. 
     However, the above described cleaning apparatuses have disadvantages such that the user has to take the trouble of replacing the head sections, and that the water drops remaining on the floor have to be removed by the user after the completion of the cleaning. 
     SUMMARY OF THE INVENTION 
     The present invention is intended to overcome the above described disadvantages of the conventional techniques. 
     Therefore it is the object of the present invention to provide a vacuum cleaner having the function of a wet wiring rag in which wet cleaning and the supply of washing fluid is possible and in which dirt and dirty water as well as dust and floating materials can be sucked up. 
     In achieving the above object, the vacuum cleaner of the present invention having the function of a wet wiping rag and including a dust collecting section, a driving section and a water reservoir, further includes: a head body having a tube inserting portion connected to the dust collecting section, and also having a washing water connecting portion extended from a side of the head body to enable the supply of water from the water reservoir to be possible; a rag detachably clad on the circumference of a roller freely rotatably installed in such a manner as to extend between the opposite sides of the head body; wheels having respectively a floor contact portion and closely contacted to gears provided to the opposite ends of the roller; a cover having dirty water collecting holes near the rags, and also having a washing water reservoir fixedly installed on the bottom of the head body and with a discharge hole formed below the washing water connecting portion; a frontal brush and blade installed respectively on the bottom of the frontal and rear portion of the head body; and a rear brush installed on the bottom of the cover. 
     Further, the frontal brush is provided with a plurality of slots on the bottom thereof. 
     Further, the rear brush is formed in an arcuate shape. 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS 
     The above object and other advantages of the present invention will become more apparent by describing in detail the preferred embodiment of the present invention with reference to the attached drawings in which: 
     FIG. 1 is a side sectional view showing the critical portion of the vacuum cleaner having the function of a wet wiping rag according to the present invention; 
     FIG. 2 illustrates the brush portion of the present invention in which: FIG. 2a is a perspective view of the frontal brush; and FIG. 2b is a perspective view of the rear brush; 
     FIG. 3 is a perspective view showing the operational relation between the roller and the wheels; 
     FIG. 4 is a perspective view of the whole body of a conventional vacuum cleaner; and 
     FIG. 5 is a side sectional view showing the head portion of another conventional vacuum cleaner. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENT 
     FIG. 1 is a side sectional view of the critical portion of the vacuum cleaner having the function of a wet wiping rag according to the present invention. In the drawing, reference numeral 1 indicates a head body, and this head body 1 includes: a tube inserting portion 2 extended from the top toward the rear in an inclined form; a washing water connecting portion 3 for supplying the washing water and projected from a side thereof; a brush securing slot 4a and a blade securing slot 4b provided on the bottoms of the frontal and rear portions thereof; and an opening formed on the bottom thereof. 
     A roller 6 is installed in such a manner that it should extend between the opposite sides of the head body 1, and the roller 6 is attached with a rag 5 in a detachable manner, while gears 6a are formed on the opposite ends of the roller 6. At the opposite sides of each of the gears 6a, there are installed wheels 8 on which contacting portions 7 (made of a soft material in order to prevent slipping) are attached and which are closely contacted with the gears 6a to be revolved together. The rag 5 is made of a non-woven fibre and is detachable. 
     A cover 9 is installed by being inserted in the bottom of the head body, and this cover 9 is provided with a washing water reservoir 10 at a position opposite to that of the washing water connecting portion 3, while a supply hole 11 is formed on the bottom thereof in order to supply washing water W to the rag 5. Further, an auxiliary dirty water collecting hole 12 is formed in the cover 9 near the rag 5 in order to suck up the dirty water from the rag 5, and brush securing slots 4a,4c are formed on the bottom of the head body and the cover 9, respectively. The cover 9 and body 1 together form a housing. 
     The cover 9 which is installed on the bottom of the head body 1 includes a dust sucking hole 13 through which dusts and dirty materials are sucked in. 
     A frontal brush 15a and a rear brush 15c are fixedly installed into the brush securing slots 4a,4c, respectively. 
     As shown in FIG. 2a, the frontal brush 15a is provided with a plurality of slots on the bottom thereof in order to facilitate the absorption of dusts and other dirty materials. 
     As shown in FIG. 2b, the rear brush 15c is formed in an arcuate shape, so that it should be easy to collect dusts and other dirty materials. 
     A blade 15b is securely fitted into the blade securing slot 4b, in such a manner that the blade should be able to collect water from the rear portion of the rag 5, so that the water should be re-absorbed during a reverse advancement. 
     In the drawings, reference numeral 17 indicates a handle in the form of an extended tube connected to the outside of the tube inserting portion 2 and connected to the dust collecting section, 18 indicates a washing water tube fitted into the washing water connecting portion 3 in order to supply water from the washing water reservoir, 19,19&#39; indicate securing protuberanes for installing the cover 9. 
     The vacuum cleaner having the function of a wet wiping rag according to the present invention as described above can be let to perform cleaning operations by positioning the head body 1 to a place to be cleaned, and by advancing it back and forth, with the extended tube 17 grasped with hands. 
     Under this condition, if a sucking force is caused to act on the sucking hole 13 by the function of the driven motor, the dusts and other dirty materials which are detached from the floor by the frontal and rear brushes are sucked into the sucking hole 13. At the same time, the gears 6a which are closely contacted with the floor contacting portions 7 are revolved in accordance with the revolutions of the wheels 8, and therefore, the rag 5 which is attached on the roller 6 as shown in FIG. 3 cleans the floor like a wet wiping rag in a frictional relation with the floor. 
     Under this condition, the washing water which is filled through the washing water tube 18 into the washing water reservoir 10 is supplied through the discharge hole 11 to the circumferential surface of the roller 6 in a certain amount, so that the floor should be cleaned like with a wet rag. Thus, when the wheels 8 are revolved forwardly or rearwardly, the frontal brush 15a collects dusts and other dirty materials from the frontal area to send them through the slots 16 (formed on the bottom thereof) to the dust sucking hole 13. Meanwhile, the rear brush 15c which is formed in an arcuate shape further facilitates the collection of the dust and other dirty materials to send them to the sucking hole 13. Meanwhile, the blade 15b scrapes the dusts and other dirty materials which are not detached by the brushes, so that the detached dusts and other dirty materials as well as dirty water should be absorbed into the rag 5 during the rearward advancement, thereby making it possible to remove all the water remaining on the floor. 
     Meanwhile, the dirty materials and dirty water which are absorbed into the rag 5 are collected into the dirty water collecting hole 12 which is formed on the cover 9, and therefore, the rag 5 can be maintained always in a clean state, thereby making the cleaning more efficient. 
     The roller 6 revolves in a direction opposite to that of the wheels 8 because of the existence of the gears 6a, and therefore, during a forward advancement, the friction between the rag 5 and the floor is further increased, thereby increasing the cleaning efficiency further. 
     According to the vacuum cleaner of the present invention having the function of a wet wiping rag, dusts and other dirty materials are sucked into a sucking hole, and at the same time, a revolving rag produces frictions with the floor in order to absorb dirty materials and dirty water, with the result that the cleaning work becomes easy and convenient, that the cleaning time is shortened, and that a thorough cleaning becomes possible by sucking the dusts and other dirty materials detached from the floor by the blade.