EP3285631A1 - Manually-displaceable cleaning device having counter-rotatable rollers - Google Patents

Manually-displaceable cleaning device having counter-rotatable rollers

Info

Publication number
EP3285631A1
EP3285631A1 EP16719364.8A EP16719364A EP3285631A1 EP 3285631 A1 EP3285631 A1 EP 3285631A1 EP 16719364 A EP16719364 A EP 16719364A EP 3285631 A1 EP3285631 A1 EP 3285631A1
Authority
EP
European Patent Office
Prior art keywords
rollers
cleaning device
3b
3a
characterized
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP16719364.8A
Other languages
German (de)
French (fr)
Inventor
Norbert Weis
Daniel BAUMGART
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Freudenberg Carl KG
Original Assignee
Freudenberg Carl KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to DE102015005229 priority Critical
Application filed by Freudenberg Carl KG filed Critical Freudenberg Carl KG
Priority to PCT/EP2016/058930 priority patent/WO2016170073A1/en
Publication of EP3285631A1 publication Critical patent/EP3285631A1/en
Application status is Pending legal-status Critical

Links

Classifications

    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036Parts or details of the surface treating tools
    • A47L11/4041Roll shaped surface treating tools
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/22Floor-sweeping machines, hand-driven
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/24Floor-sweeping machines, motor-driven

Abstract

The invention relates to a cleaning device comprising a main part (1) and a handle (2) with which an operating person can displace said cleaning device on a surface being cleaned, two counter-rotatable rollers (3a, 3b) being received in the main part (1) such that said rollers (3a, 3b) come into contact with the floor being cleaned, said rollers (3a, 3b) being arranged in the main part (1) such that they are only separated by a shared air gap and/or longitudinal gap (6).

Description

 Hand-operated cleaning device with

 counterrotating rollers

description

Technical area

The invention relates to a manually movable cleaning device according to the preamble of patent claim 1.

State of the art

From US 8 443 478 B1 a cleaning device is known which

motor assisted by a handle is manually movable. The cleaning device has two counter-rotating rollers whose rotational speeds are independently adjustable. The rollers are provided with brushes. The rollers are arranged adjacent, wherein a wall structure is arranged between the rollers. From the wall structure can be rebound and deflected by a roller scattered dirt particles. Moreover, the rollers for cleaning the base body can be removed.

In the already known cleaning device, a relatively complex constructed wall structure is provided between the bristled cleaning rollers. This causes the spin-on of the respective cleaning roller Dirt particles are conveyed independently and without interaction with the other roller in the collecting container.

Since the brushes or their bristles are separated by the wall structure, an interaction of the brushes for conveying the respectively detected and centrifuged dirt particles is prevented.

Due to the lack of cooperation of the brushes in a common space and no pumping action to accelerate the

Air flow can be achieved in the conveying direction of such a common space between the brushes.

In addition, the brushes are even arranged at a distance from each other so that even a sufficiently strong suction vacuum above the rollers can be produced only with greater expenditure on equipment. Also the education of

Brushing is more of a hindrance to building a suction vacuum.

In that regard, no optimal promotion of dirt particles and the surrounding air is possible. Even a suction vacuum is not easy to produce, which significantly affects the direction of conveyance of dirt particles, increases the cleaning performance and at the same time facilitates the collection or collection of dirt particles.

Presentation of the invention

The invention is therefore an object of the invention to provide a cleaning device, with which a structurally simple design optimum delivery of particles and the surrounding air is achieved in a collecting container and in which a promotion this possibly supporting strong suction vacuum is easily generated. The present invention achieves the aforementioned object by the features of claim 1. A cleaning device comprises a base body and a handle, with which a person operating the cleaning device can move on a surface to be cleaned, wherein in the base two counter-rotating rollers are accommodated so that both rollers come into contact with the soil to be cleaned. According to the invention, the rollers are not separated by a wall structure, so that they are on both sides of a common

 Act longitudinal gap. In this respect, the rollers are arranged such that they include a common air gap. The rollers are immediately adjacent to each other. Only a relatively narrow longitudinal gap is provided between the rollers, which allows the rollers on both sides of the longitudinal gap to interact with fluidized and / or absorbed media such as air or dirt particles in the same direction. This effect is supported in particular by the counter-rotating rollers.

Since both rollers come into contact with the floor to be cleaned can be prevented that dirt particles are thrown by impulse transmission under the body through. In that regard, a cleaning device is specified, with which with a structurally simple structure optimal delivery of particles and they

surrounding air is achieved in a collecting container and in which a promotion this possibly supporting strong suction vacuum is easily generated. The handle is preferably hingedly connected to the body. In this case, the joint may be formed as a universal joint. The cleaning device is driven manually. In this respect, electric drive means for the rollers can be omitted.

The rollers are preferably driven by means of an electric motor. For this purpose, in the base body, an electric motor and an energy storage,

preferably arranged an accumulator. The power transmission to the rollers is preferably via a traction mechanism drive, for example via a toothed belt.

If the rolls are the same size, they throw up dirt particles. In this case, the dirt particles can at least partially fall directly downwards again and accumulate in an undesired manner above the longitudinal gap between the rollers.

Therefore, the rolls could have different diameters. In this way, dirt particles can be directed in a preferred direction, which deviates from the orthogonal to the surface to be cleaned. An inclined one

Preferred direction allows a low overall height of the body, since the dirt particles can be guided obliquely into a collecting container.

The diameter ratio of the rolls may be between 7: 6 and 12: 6, preferably 8: 6. In an advantageous embodiment, the larger roller has a diameter of 40 mm and the smaller roller has a diameter of 30 mm. Preferably, the roller is associated with the larger diameter of the leading edge of the body. The roller with the smaller diameter is arranged in this embodiment, viewed from the front edge of the body behind the larger roller and closer to the collecting container. In this embodiment, the received dirt particles led obliquely behind in the arranged in the body collecting container. It was also found that the larger roller on the floor to be cleaned

adhering dirt dissolves better than the smaller roller.

In addition, investigations have shown that smaller, dust-like soils are more effective on smaller-sized rolls

Diameter are thrown into the collection container, while larger, particulate contaminants are thrown more effectively by larger diameter rollers in the collection container. In this respect, it is particularly advantageous if both rollers come into contact with the soil to be cleaned.

The width of a longitudinal gap between the rollers could be in the range 0.5 mm to 15 mm, preferably in the range 1 mm to 10 mm. As a result, a high flow rate and a high suction vacuum in the area above the longitudinal gap can be achieved. So dirt particles can be very well promoted and sucked. The rollers can be profiled to further improve the conveying properties and interlock in the respective profiling.

Against this background, the lateral surface of at least one roller could be provided with a profile. As a result, a preferred direction is generated, in which dirt particles are forced. The profile could be one

Unfold pumping action.

A profile could be designed like a shovel. Angle of profile structures, preferably angles of profile blades, relative to the lateral surface of a roller have a decisive influence on the promotion effect. A kind of shovel causes a particularly good conveying effect.

The profile can be formed by lamellae. The slats run

preferably in the longitudinal direction of the rollers. To improve the

 Cleaning effect, it is advantageous if the lamellae are elastically deformable. For this purpose, at least the fins may be formed of a thermoplastic elastomer (TPE). The cleaning effect improves again when the lamellae are V-shaped. The tip of the V-shaped blades is preferably arranged approximately centrally on the roller. As a result, dirt particles, which are received in the outer region of the rollers, deflected in the direction of the center of the rollers, so that they can be safely transported into the collecting container.

The lamellae can be spaced apart from one another in the region of the smallest distance of the rollers only by a longitudinally extending gap. The gap width is 1 mm in an advantageous embodiment.

Between the fins and the facing surfaces of the rollers, an air chamber can form. In the air chamber at least larger particles are trapped and in the direction of

Receiving container promoted.

The lateral surface of at least one roller could at least partially not be provided with bristles or bristle bundles. Bristle bundles can not close a closed volume in a space between the two rollers. There are always gaps between the bristles of the bristle bundles, by which a pumping action is reduced. Therefore, both rollers preferably have no bristles or bristle bundles.

The width of the longitudinal gap in the case of profiled rolls is defined as follows: there are two profile radii for profiled rolls starting from their axes of rotation, an outer profile radius ending at the point of the profiling, and an inner profile radius ending at the foot of the profiling.

If, for example, a profile height of 10 mm is present, a width of the longitudinal gap of 1 mm would mean that at a synchronization

 Profile elevation-gap remains a distance from the radially outermost point of the profile on the base of the opposite roll of 1 mm. The profiles of the rollers then engage each other, resulting in a good conveying effect or pumping action.

At least one roller could be spring-mounted. As a result, the rollers can strike against the surface to be cleaned and thereby remove dirt particles from this. In a further advantageous embodiment, the rollers are at least partially deformable. These rollers can at least

be provided in sections with a core of foam. Due to the deformable design, the rollers can adapt to the floor to be cleaned, so that it is always ensured that both rollers bear against the floor to be cleaned at least in the region of the profile. In this case, the rollers may be arranged in the base body such that the profile or the lamellae are deformed in the area of contact with the floor to be cleaned and thereby rest with prestress against the floor to be cleaned. The rollers could be rotatable at such speeds that the

Speeds at the radially outermost points are the same. As a result, dirt particles that are thrown from one roller in the direction of the other roller, effectively from each

on the opposite roller. In addition, any profiles can interlock synchronously. A smaller roller thus rotates at a correspondingly higher speed than a larger opposing roller. In this respect, the rollers in this embodiment have a matching

Peripheral speed.

Depending on the application, it may also be advantageous if the rollers alternatively have the same speed.

The rollers are preferably operatively connected. The connection of the rollers can also be done via a traction drive or alternatively via gears. Depending on the intended use of the cleaning device, the ratio can then be selected so that both rollers have the same peripheral speed or alternatively the same speed. Above the rollers and / or the longitudinal gap, a preferably angled impact surface could be arranged. This can be done a steering of the hurled dirt particles. The baffle surface is provided above the rollers in the housing. This supports the guidance of the dirt particles in a preferred direction, as it is produced by different sized rollers. The conveying effect of the suction vacuum is also supported by the impact surface in an advantageous manner.

Preferably, the impact surface is curved. For this purpose, the shape of the impact surface may correspond to the shape of the rolls. Due to the curved design, the dirt particles safely in the Guided collecting container. The curved shape prevents the particles of dirt from getting in contact with the impact surface a pulse through which the dirt particles are thrown back out of the cleaning device.

In the area behind the rollers, a venting device could be provided. If no suction vacuum acts or should act, it may be advantageous, preferably to provide in a region behind the rollers for a vent, as can be generated by the rollers, an air flow into the cleaning device inside. An undesired pressure build-up generated by the pumping action of the rollers can thus be compensated.

Gaps between the rollers and an enclosing housing could preferably be smaller at at least one location than the longitudinal gap between the rollers. Otherwise, the pumped medium can easily escape again in the opposite direction. In addition, larger gaps between the housing and the rollers make it difficult to build up a suction vacuum behind the rollers. Alternatively or additionally, it can also be provided that the gaps between the housing and the rollers are at least partially closed by a low-friction seal contacting the rollers.

This seal may be in the form of a flexible lip or by other rollers or by a continuous bristle curtain. With this seal also any adhering to the rollers particles are stripped off.

Brief description of the drawing In the drawings show:

Fig. 2 is a schematic view of two counter-rotatable rollers with different diameters and

Fig. 3 is a schematic view of two counter-rotatable rollers with different profiles. The profiles of the rollers engage with each other, wherein a profile is designed like a shovel.

Embodiment of the invention

Fig. 1 shows a cleaning device comprising a base body 1 and a handle 2, with which a person operating the

 Cleaning device can move on a surface to be cleaned. The

Handle 2 is pivotally connected to the base body 1. In the main body 1, two counter-rotatable rollers 3a, 3b are added. The rollers 3a, 3b are arranged so that they on both sides to a narrow

acting common longitudinal gap 6. The rollers 3a, 3b are driven by an electric motor, which is arranged together with an accumulator in the base body 1. The drive of the rollers 3a, 3b takes place in such a way that both rollers 3a, 3b have the same peripheral speed. The rollers 3a, 3b are arranged such that they are separated only by a common air gap and / or a longitudinal gap 6. Both rollers 3a, 3b come into contact with the soil to be cleaned.

Fig. 2 shows that the rollers 3a, 3b have different diameters r1, r2. The front edge of the base body 1 associated roller 3b has a diameter r2 of 40 mm and the roller 3a arranged behind it has a diameter r1 of 30 mm. This allows

Dirt particles are directed in a preferred direction 4, which deviates from the orthogonal to the surface to be cleaned. An inclined one

Preferred direction 4 allows a low overall height of the base body 1, since the dirt particles can be guided obliquely into a collecting container 5.

The collecting container 5 is arranged in the basic body 1 and can be removed from the basic body 1 by means of a handle for emptying.

The width of the longitudinal gap 6 between the rollers 3a, 3b is 1 mm.

This results in a particularly good conveying effect with respect to the medium to be transported, namely dirt particles and / or air causes. In combination with a suction unit 7 is also achieved by a suitable narrowness of the longitudinal gap 6, a high negative pressure above the longitudinal gap 6, resulting in a rapid flow of air through the longitudinal gap 6 and thus to a good absorption of dust and dirt particles from the ground. Above the rollers 3a, 3b and the longitudinal gap 6 a beater surface 8 is arranged. The impact surface 8 is curved and follows the contour of the rollers 3a, 3b. The impact surface 8 forms part of the main body 1, namely a part of the housing cover ice. FIG. 3 shows that the lateral surface of at least one roller 3a is provided with a profile 9. As a result, a particularly good conveying effect in

Direction of rotation of the rollers 3a, 3b produced. The profile 9 could develop a pumping action. Specifically, the profile 9 is formed like a shovel. For this purpose, the rollers 3a, 3b are provided with lamellae, which are elastically deformable. Furthermore, the rollers 3a, 3b have sections of a core

deformable foam on. As a result, the rollers 3a, 3b are deformable and adapt to the soil to be cleaned. The lamellae of both rollers 3a, 3b always come into contact with the floor to be cleaned, wherein the lamellae bear against the floor to be cleaned with bias and deform in sections. The slats extend in the longitudinal direction of the rollers and are V-shaped.

The lateral surfaces of both rollers 3a, 3b are not completely provided with bristles or bristle bundles. Their profile structures, namely profile blades 9a, 9b interlock. An air chamber 9c can arise between two profile blades 9a, 9b.

The profile blades 9a are arranged at an angle and protrude secant from the lateral surface of the roller 3a. The profiled blades 9b are not arranged at an angle and protrude radially from the rotation axis of the roller 3b radially outward without inclination. There are two profile radii Pr1, Pr2.

At least one roller 3a, 3b could be spring-mounted. As a result, the rollers 3a, 3b strike against the surface to be cleaned and thereby dissolve dirt particles from this.

The rollers 3a, 3b are rotatable at such speeds that the

Speeds at the radially outermost points are the same.

Claims

claims
1. Cleaning device, comprising a base body (1) and a handle (2) with which a person operating the cleaning device can move on a surface to be cleaned, wherein in the base body (1) has two counter-rotatable rollers (3a, 3b) are accommodated in that the rollers (3a, 3b) come into contact with the floor to be cleaned, characterized in that the rollers (3a, 3b) are arranged in the base body (1) in such a way that they are separated only by a common air gap and / or a Longitudinal gap (6) are separated.
2. Cleaning device according to claim 1, characterized in that the rollers (3a, 3b) have different diameters (r1, r2).
3. Cleaning device according to claim 2, characterized in that the diameter ratio of the rollers (3a, 3b) between 7: 6 and 12: 6, preferably 8: 6.
4. Cleaning device according to one of claims 1 to 3, characterized
 in that the width of a longitudinal gap (6) between the rollers (3a, 3b) is in the range 0.5 mm to 15 mm, preferably in the range 1 mm to 10 mm.
5, cleaning device according to one of claims 1 to 4, characterized
 in that the lateral surface of at least one roller (3a, 3b) is provided with a profile (9).
6. Cleaning device according to claim 5, characterized in that the profile (9) is formed by lamellae.
7. Cleaning device according to claim 6, characterized in that the lamellae are V-shaped.
8. Cleaning device according to claim 6 or 7, characterized in that the lamellae in the region of the smallest distance of the rollers (3a, 3b) are spaced apart only by a gap.
9. Cleaning device according to claim 5, characterized in that the profiles (9) of the rollers (3a, 3b) mesh with each other.
10. Cleaning device according to one of claims 6 to 9, characterized
 in that an air chamber is formed between the lamellae and the mutually facing surfaces of the rollers (3a, 3b).
11. Cleaning device according to one of claims 1 to 10, characterized
 characterized in that at least one roller (3a, 3b) is resiliently mounted.
12. Cleaning device according to one of claims 1 to 11, characterized
 characterized in that the rollers (3a, 3b) are deformable.
13. Cleaning device according to one of claims 1 to 12, characterized
 in that the rollers (3a, 3b) are rotatable at speeds such that the speeds at their radially outermost points are the same.
14. Cleaning device according to one of claims 1 to 13, characterized
in that above the rollers (3a, 3b) and / or the longitudinal gap (6) a baffle surface (8) is arranged.
15. Cleaning device according to one of claims 1 to 14, characterized in that behind the rollers (3a, 3b) is provided a venting device.
EP16719364.8A 2015-04-24 2016-04-21 Manually-displaceable cleaning device having counter-rotatable rollers Pending EP3285631A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE102015005229 2015-04-24
PCT/EP2016/058930 WO2016170073A1 (en) 2015-04-24 2016-04-21 Manually-displaceable cleaning device having counter-rotatable rollers

Publications (1)

Publication Number Publication Date
EP3285631A1 true EP3285631A1 (en) 2018-02-28

Family

ID=55860828

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16719364.8A Pending EP3285631A1 (en) 2015-04-24 2016-04-21 Manually-displaceable cleaning device having counter-rotatable rollers

Country Status (5)

Country Link
US (1) US20180125321A1 (en)
EP (1) EP3285631A1 (en)
CN (1) CN107529929A (en)
CA (1) CA2983382A1 (en)
WO (1) WO2016170073A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050470A1 (en) * 1980-10-17 1982-04-28 Numatic International Limited Ground sweepers
JPH0375885U (en) * 1989-11-21 1991-07-30
US6533871B2 (en) * 2001-01-12 2003-03-18 Royal Appliance Mfg. Co. Carpet extractor with dual nozzles for dual brushrolls
US20060191097A1 (en) * 2004-05-11 2006-08-31 Baumhakel Alexander J Transport cleaning device
DE102007061607A1 (en) * 2007-12-18 2009-06-25 Carl Freudenberg Kg cleaner
CN106889947A (en) * 2011-04-29 2017-06-27 艾罗伯特公司 Autonomous coverage robot for surface cleaning

Also Published As

Publication number Publication date
WO2016170073A1 (en) 2016-10-27
CA2983382A1 (en) 2016-10-27
CN107529929A (en) 2018-01-02
US20180125321A1 (en) 2018-05-10

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