DK167423B1 - UNIVERSAL Mouthpieces for Vacuum Cleaners - Google Patents

Description

DK 1b / 423 bl 1.

The invention relates to a ver salmond piece which can be used in connection with known vacuum cleaners with or without washing systems, carpet brushes or other floor cleaning machines for cleaning floors with various coatings, such as carpets, rugs and other textile-like materials as well as floors with solid surfaces, such as wood, parquet, plastics, tiles or other commonly used flooring materials. In the invention, it is emphasized that the nozzle is particularly suitable for removing human hair, dog and cat hair, as well as wire debris, funnels and the like from floors with carpets or carpet-like coatings, both with or without the use of washing systems. Furthermore, the user can quickly adjust the same nozzle for different cleaning tasks during work, and that the nozzle in use has 15 high abrasion resistance and is gentle on the substrate. Also that it is self-cleaning to the greatest extent possible. The nozzle is also suitable for cleaning other types of textiles furniture, seats and cushions in cars etc.

The known nozzles for vacuum cleaners as well as carpet brush appliances and the like are characterized in that they are pushed back and forth over the substrate. Although such equipment is provided with various devices on the surface of the system, the reciprocating movement above 25 will not be able to detach and especially collect hair and shavings, etc. in such a form that they can easily be removed effectively by suction. Other known mouthpieces are provided with backward teeth of various materials which grip the hood of the carpet to remove hair and scissors.

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This means that the nozzle is heavy to work with, that it wears heavily on the substrate and that hair and shavings get stuck in the teeth, which must then be manually cleaned. Other mouthpieces are provided with textile-like cushions, but these are worn quickly from experience, thus the ability to hold hair and the like. disappears, just as hair and trevels get stuck in the material. Other known solutions are urged to use one or more rail-shaped bodies with different profiles and suspension methods, which act by dragging the sharp edge of the rail over the substrate, which is believed to have a strong abrasive effect on the carpet. The previously known nozzles are not intended for cleaning all floor coverings and cleaning with water or detergents. The known solutions about -15 do not deal with a mouthpiece that can quickly solve various tasks, which means that the user must have several different mouthpieces. The use of known mechanical or motor rotating brushes is costly and does not solve the problem satisfactorily, as hair and shavings wrap around the brush which is difficult to clean.

British Patent No. 12491S is known as a carpet cleaning machine, which according to the claims operates in that a brush, which is transverse to the direction of movement of the machine, suspended in the machine at a pivot vertically above the brush, is guided back and forth over the support by means of a drive arm. there is associated with a transverse cylindrical brush that rotates as the brush is moved 30 back and forth over the substrate.

DK 167423 B1 3.

The rotating brush rotates about its own axis with changing direction of rotation depending on the changing direction of movement of the machine, and the suspended transverse brush therefore makes a corresponding reciprocating movement across the substrate.

Therefore, Danish Patent No. 124919 does not provide an apparatus having the characteristics described in the preamble.

The invention provides a mouthpiece of the kind set forth in the preamble of claim 1 and having the characteristics described in the preamble in one and the same mouthpiece as described below.

The nozzle is characterized in that the nozzle is provided with one or more cylindrical rollers, and that the roll / rollers comprise a shaft and two or more freewheel bearings arranged in a tube with an outer coating, which freewheel bearings are arranged so that that the roller, when moving over a support in a direction, can freely rotate about its own shaft, and where the rotation is blocked as the roller is advanced in the opposite direction.

2When the roller is advanced in a blocked condition across the substrate, 25 hairs are collected, shavings etc. in the wedge-shaped area formed between the roller and the substrate in a longish sausage which is easily aspirated or collected in an appropriate container. By using cylindrical rollers having a circular cross-section, which are conveyed in alternating direction, the properties stated in the invention are obtained.

The rollers used according to the invention may be provided with different types of external coating adapted to the present cleaning tasks. Thus, for cleaning carpets and 35 carpets, a roller with a smooth - or almost smooth - rubbery surface can be selected, which removes hair, shavings and the like, both efficiently and gently. If it applies- / 4.

Reversed vacuum cleaner is of the type where through a nozzle. . If water or detergent is sprayed onto the carpet, the rubber roller is suitable for irrigating the water towards the suction funnel for efficient removal. Another roller may be provided with a surface designed as a cylindrical brush roller or coated with a brush-like material which partly "helps to remove hair, etc., and partly gives the carpet cover a slight coating which improves the vacuum cleaning efficiency. can also be used in dry vacuuming of solid flooring. In the case of a definite floor wash, a brush roller in the blocked condition acts as a solid brush - ie as a floor scrubber - while a rubber-coated roller acts as a rubber scraper when the nozzle is moved in that direction. Other rollers may also be used - adapted to the task.

The rollers disposed in the mouthpiece of the invention may be. suspended in a combined suspension and actuation assembly which enables easy activation of the rollers or rollers that the user 20 will use as required. In one embodiment of the nozzle, where e.g. If 1 brush roller and 1 rubber roller are used, the user can choose to activate the brush roller alone, the rubber roller alone both rollers at once or none at all. The actuation of the rollers is controlled by a hand or foot actuated actuating lever located on the top of the nozzle. The suspension with rollers is pressed against the ground by any adjustable springs or by its own weight. The suspension and actuation assembly used in the suction nozzle can be expanded as needed to include several adjustable functions e.g. for the production of mouthpieces for professional use, as well as simpler designs can also be conceived.

The rollers used in the nozzle are according to the invention for the sight with rails which are so designed and suspended that they are 35 DK 167423 B1 5.

coat the surface of the rollers, whereby hair and impurities which may have settled on them are stripped and suctioned as the rollers rotate. In this way the rollers become self-cleaning during use. The rail which cleans a brush roller may be configured as a nest comb-like rail where the teeth enter between the roller brushes. In this way, hair, etc., which is caught by the brushes when the roller is passed over the substrate in blocked condition, is caught by the comb and sucked as the roller rotates. The rail which cleans a smooth rubber roller may be formed as a flat rectangular plate of suitable material e.g. steel or plastic optionally provided with a wear edge facing the roller. The cleaning rail can be suspended in a pin so that it can rotate and can be pressed against the rollers either by spring load or by own weight.

The rectangular rail, which cleans the gun roller according to the invention, prevents the passage of the suction flow across the upper surface of the rubber roller, if it is airtight or approximately airtight. Hereby the suction of the mouthpiece is concentrated to the gap formed between the roller and the substrate. If the suction flow is blocked to such an extent that the suction capacity decreases, the rail blocking the upper air flow may open due to the pressure difference between the suction side and the pressure side. By adjusting the weight of the rail or the size of the spring load the timing of opening and closing can be adjusted as needed. It is of the utmost importance that the highest possible suction pressure is established in said slit area, especially when suctioning water. When the rubber roller is deactivated by lifting from the substrate, JO is opened for free suction under the roller.

The mouthpiece of the invention may be formed in various ways, some of which are described below with reference to the accompanying drawings, Pig 1, 35 Pig 2, Pig 3, Pig 4 and Pig 5.

LsΙΥ D I

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Fig. 1 shows the cross section of a cylindrical roller. The roller is supported by a shaft 1, which may be secured in the suction mouth piece to a vacuum cleaner, in a brush machine or in a similar floor cleaning machine and have a suitable length relative to the nozzle. On the shaft 1 are mounted two or more freewheel bearings 2 of known construction which only allow rotation in one direction, arranged in a tube 3 having a suitable coating on the outside 4. As the roller is advanced over the support 5 in the direction as indicated by the arrow a, the freewheel bearings allow the roller to rotate across the support as shown by the arrow c. When the roller is moved back across the support 5 in the opposite direction, as indicated by the arrow b, the freewheel bearings 2 will block the rotation of the roller. The roller will therefore perform a scraping motion across the substrate. Due to the friction in the wedge-shaped slit that occurs between the curved cylindrical surface and the planar or relatively planar surface, hair, turrets, and dirt particles will be pulled out of the blocked roller and rolled tightly into an elongated sausage of hair and shavings which can easily be sucked up or collected. Due to the construction of the roller, the abutment surface against the substrate will constantly change during use, thus ensuring optimum wear resistance and operability.

The surface of the roller may be of various suitable material, just as the structure of the surface may be of different nature. Fig. 2 shows a roller formed as described in Fig. 1, but with an outer covering of brushes 6, the stiffness and shape of which can be varied according to the nature of the cleaning task.

50 In Fig. 3, a cross-sectional view of the actuation grip of the suspension and actuation mechanism used according to the invention is shown. The actuation lever 7 bears an approximately triangular cross-section and has a suitable length and can be rotated about the axis 8.

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The handle has an obliquely cut edge so that it can make a rolling motion, as shown by arrow j, across the upper face of the nozzle 11. Since the axis of the grip is located at the distance d with respect to one of the abutment surfaces. 5 and with the distance e relative to the other abutment surface, and since the two distances d and e are different, the lifting arm 9 carrying the rollers' suspension at the point lo will raise or lower the suspension by the distance f, which is equal to the difference between the two distances d and e as the activation lever 7 10 is turned.

In Fig. 5 there is shown in cross-section an example of an overall solution using two of the cylindrical rollers according to the invention, as shown and described in Fig. 1 and Fig. 2.

15 One roller, Pig 2, is shown as a cylindrical brush roll and is secured to shaft 1 in the arms 16. The other roller, Pig 1, is provided with a cylindrical coating of a rubbery material and is secured to shaft 1 in the other end of the arms 16. These are fixed at the shaft pins 17 to the nozzle 14 which connects to the vacuum cleaner through the thrust 15. The arms 16 are rotatable in a circular arc around the shaft pins 17, so that the rollers, Pig 1 and Pig 2, can be raised. or lowered as needed, as the arrow h shows. The arms are moved by the vertical rods 9 fixed at the bottom 25 by the shaft 1o in the arms 16 and above by the shaft pins 8 in the actuation lever 7. The rollers, Pig 1 and Pig 2, are pressed down against the support 5 by the springs 18. By adjustment of the pressure from the springs, the pressure of the rollers against the substrate 5 can be controlled.

When the rubber-coated roller is desired to be disconnected, it is raised by turning the foot or hand-operated actuating lever 7 shown by arrow j. When the entire nozzle 14 is advanced in the direction indicated by the arrow a, the rollers, Pig 1 and Pig 2, can rotate freely about their own axis, as shown by the arrow g. The whole nozzle 14 is moved in the opposite direction, as shown by 35 arrow b, the freewheel bearings in the rollers, Pig 1 and Pig 2, will block these. This provides the directional scraping effect as provided by the invention. Hair, nappies and 8.

other impurities are thereby withdrawn from the rollers, collected in a tightly rolled sausage in front of them and therefore can be suctioned through the vacuum cleaner hose connection at the plug 15 · When vacuuming with washing systems, the suction nozzle can be provided with a connection plug 19. Water that is sprayed the substrate is therefore pulled as described above towards the funnel-shaped butt 15 and suctioned.

The brush roll, Pig 2, is provided with a rail made 10 as a nest comb-shaped plate 12, as shown in Pig 4, and suspended at point 21, so that the teeth of the comb enter between the brushes of the brush roll, Pig 2. When the mouthpiece 14 is moved in the direction, as shown by arrow b, pulls the brush roll, Pig 2, hair and impurities with it. As the nozzle 14 is moved in the opposite direction, as shown by arrow a, the brush rotates. Hair and impurities caught by the brushes are scraped off and suctioned off. Therefore, hair, slips and the like do not wrap around the roller.

The rubber roller, Pig 1, is provided with a rail constructed as a rectangular plate 13, as shown on Pig 4, and suspended at the point 22 so as to abut against the roller, Pig 1, by means of the spring 2o. and can be turned as shown by the arrow in.

As the nozzle 14 is moved in the direction, as shown by arrow a, 25, the roller, Pig 1, rotates and hairs and impurities as well as any water is scraped off the roller, Pig 1, by the plate 13, thereby rendering the roller self-cleaning.

The plate 13 may be designed to completely or partially block the suction flow on the top of the roller. The required suction pressure required to open for the passage of air across the roller, Pig 1, by rotating the rail, as shown by the arrow i, is controlled by the spring force from the spring 2o or the weight of the rail 13. When the roller, 35 Pig 1, raised from the substrate 5, there is an unobstructed passage of the suction flow under the roller, so that the suction force is directed towards the brush roll, Pig 2.

Claims (7)

9 A nozzle for use in connection with vacuum cleaners, carpet brushes or other machines for cleaning floors with various materials, the nozzle comprising a housing (14) and a pipe nozzle (15) and provided with a cylindrical roller whose axis of rotation is horizontal and extending perpendicular to the direction of movement of the machine, characterized in that the nozzle is provided with one or more cylindrical rollers and the roller (s) comprises a shaft (1) and two or more free-running bearings (2) arranged in a pipe (3) with an outer coating (4), which free-bearing bearings (2) are arranged so that the roller can move freely about its own shaft by moving over a support (5) in one direction, and the rotation is blocked when the roller is guided. forward in the opposite direction. 15 Nozzle according to claim 1, characterized in that one or more of the rollers used in the nozzle are arranged in a set of horizontally mounted rods (16) pivoting a set of pins (17) fixed in the housing of the nozzle (14). and studs (15), which are actuated by a set of rods (9) secured at one end to the horizontally mounted rods (16) at the shaft (10) and at the other end secured by an actuating handle (7) in shaft pin (8) and where the suspension is pressed against the support (5) by springs (18) or by the weight, 25 and wherein the pivot point (8) of the actuating lever (7) has distances (d) and (e) from the actuating lever (7). abutment surfaces, which distances (d) and (e) have a mutually different size, whereby the rods (9) can be raised or lowered (f). 30 Nozzle according to claim 1 or 2, characterized in that one or more of the rollers used in the nozzle have a surface of a smooth or almost smooth rubbery material (4). 10 Nozzle according to claim 1 or 2, characterized in that one or more of the rollers used in the nozzle have a surface of brushes or brush-like material (6). 5 Nozzle according to claim 3, characterized in that the rollers arranged in the nozzle are provided with a rectangular rail (13) which is pivotally mounted at a point (21) on the housing (14) and which is pressed against the roller and which is pressed inc 10 against this by a spring pressure (20) or by own guard cf the rail (13). Nozzle according to claim 4, characterized in that the rollers arranged in the nozzle are provided with a tool-like rail (12) which is pivotally mounted at a point (22) on the housing (14) and abuts against the roll. and which are pressed against it by spring pressure (23) or by own guard of the rail (12). Nozzle according to claim 5, characterized in that a rail (13) is adapted so that it completely or partially prevents the suction flow from the vacuum cleaner from passing the space between the underside of the housing (14) and the upper side of the roller, and so that the rail (13) which abuts the surface of the roller may open when the suction force reaches such a size that it overcomes the force by which the spring (20) and the rail's own weight keep the rail (13) pressed against the roller.