US3818532A - Sweeper - Google Patents

Sweeper Download PDF

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Publication number
US3818532A
US3818532A US00307566A US30756672A US3818532A US 3818532 A US3818532 A US 3818532A US 00307566 A US00307566 A US 00307566A US 30756672 A US30756672 A US 30756672A US 3818532 A US3818532 A US 3818532A
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US
United States
Prior art keywords
frame
combination
portions
axles
recesses
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.)
Expired - Lifetime
Application number
US00307566A
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English (en)
Inventor
G Leifheit
J Liebscher
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.)
Leifheit International GmbH
Original Assignee
Leifheit International GmbH
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
Application filed by Leifheit International GmbH filed Critical Leifheit International GmbH
Application granted granted Critical
Publication of US3818532A publication Critical patent/US3818532A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/32—Carpet-sweepers
    • A47L11/33—Carpet-sweepers having means for storing dirt

Definitions

  • the present invention relates generally to sweepers, and more particularly to sweepers of the type which are especially suitable for sweeping of rugs, carpets and the like.
  • Sweepers of this type are already known. .They use one or more substantially cylindrical brush rollers that are mounted for rotation.
  • the sweeper is provided on wheels or rollers on which it moves over the surface to be swept, and conventionally the brush roller or rollers are connected with one or more of these wheels so as to be driven thereby via suitable connecting components.
  • Another object of the invention is to provide such an improved sweeper in which the reliability of the journalling of the axles is not affected even over long periods of time and under heavy use of the sweepers, and in which even repeated disassembly and reassembly of the sweeper does not result in an undersirable changing of the positions of the various components relative to one another.
  • a sweeper particularly a sweeper for rugs and carpets
  • a combination comprising a housing and a frame supporting the housing and having a side facing a surface to be swept. This side is provided with recesses.
  • At least one rotary brush is provided, having a mounting axle.
  • A' plurality of supporting wheels are provided, also having mounting axles. The axles of the brush and/or the supporting wheels are journalled for rotation in the recesses, and the latter are bridged and closed by self-retaining closure members extending across them.
  • axles need merely be inserted from the underside of the frame into the journal opening in the recesses, whereupon the recesses are closed by connecting the closure members.
  • closure members are configurated as downwardly facing closures in the region of a respective group of wheels located adjacent one or the other end of the brush roller or rollers, and to provide them with openings through which the wheels can extend, with the closure members being configurated as shells.
  • such a configuration also makes it possible to achieve the connection of the closure members with the frame at regions which are spaced from the journals, which is desirable.
  • journalling of the axles which amounts to a double journalling and provides for a precise vertical positioning of the axles in the respective journals; this is achieved by providing journal recesses located at opposite sides of the wheels and having socket-shaped supporting portions of the closure members extend locally into them.
  • the clamping members are provided at the end regions of the closure members, which clampingly engage connecting portions provided on the frame, in order to assure a reliable retention of the closure members even under the most adverse heavy-duty applications.
  • the closure members are provided with sets or pairs of projections each of which can snap over and embrace a projection of the frame. This makes it possible to achieve a reliable nonself-releasing action, even if tolerance variations occur in the manufacture or if deformation occurs due to high stresses acting upon the components. On the other hand it is of course desirable to make the closure members rapidly and reliably removable.
  • axle of the brush roller journalled in a substantially U-shaped bracket, which in turn is vertically shiftably guided in appropriate vertical guides of the frame.
  • those portions of the closure members which extend under the ends of the brush roller with depressions in order to prevent a contact of the brush roller even when the latter is in its lowest position permitted by the guide portions of the frame.
  • the frame may advantageously be of one piece and be connected with the housing via coupling elements provided along its circumference. This makes it possible to install the brush roller or rollers and the wheels independently of the connection between the frame and the housing, and the necessary connection between the frame and the housing can be readily established without difficulties.
  • the frame itself is provided with apertures into which undercut projections of the housing can be inserted, so that an essentially tight no-play connection in vertical and in horizontal direction can be established between the frame and the housing without requiring additional connecting means.
  • This type of connection also brings with it the further advantage that it can be readily and at any desired time released, if replacement of parts, inspection or cleaning so requires.
  • FIG. 1 is a perspective view of a sweeper according to the present invention
  • FIG. 2 is a bottom plan view of the sweeper in FIG. 1, with portions removed for illustration;
  • FlG. 3 is a section taken on line IIIIII of FIG. 2;
  • Flg. 4 is a section taken on line IV-IV of FIG. 2;
  • FIG. 5 is a section taken on line V ⁇ / of FIG. 2.
  • FIGS. 1-5 we have illustrated an embodiment of a sweeper having a housing having a cover-like upper portion 11 and a frame-shaped lower portion 12. It carries a pivotable bracket 13 which is connectable with a long handle in known manner (not illustrated) so that by pushing and pulling on the handle the sweeper can be moved over a surface to be swept, for instance a rug, carpet or the like.
  • a frame 14 which carries the essential components of the sweeper, that is the rotary brushes 15 and 16 and the wheels 17 and 18.
  • the purpose of providing the wheels 17 and 18 is not only to pennit movement of the sweeper over the surface to be swept, but also to drive the brushes 15 and 16 in rotation.
  • the brush 15 is here configurated as a brush roller extending transversely of the housing and at the opposite lateral sides of it are arranged bottom wall portions 19 and 20 which can be flipped open and which. in the closed condition, provide chambers in which dirt picked up by the brush 15 becomes deposited.
  • the additional brushes 16 illustrated in this drawing are cup-shaped and provided in the forward edge regions of the sweeper, their purpose being to draw in dirt from those lateral portions which are not reached by the roller 15, and to convey it into the region of the roller 15 for pickup by the latter.
  • the brushes 16 are driven separately of one another by a respective one of the wheels 18, each brush 16 being turnable about an essentially vertical axis of rotation.
  • the brush roller 15 is provided at its opposite ends with contact zones which are in frictional engagement with the pairs of wheels 17 which are arranged in the region of these opposite ends for the purpose of driving the brush roller 15. They are mounted on the axles 21 which extend essentially parallel to the axis of the brush roller 15 and are journalled in the frame 14.
  • the frame 14 is provided at opposite sides of the wall portions 19 and 20 with laterally spaced webs 22 which surround a chamber-like space 25 and have the wheels located in part between them, being provided at opposite sides with journals 23, 24 for the axles 21. This retains the axles 21 and provides for proper positioning of the wheels 17.
  • These journals 23 and 24 are formed as recesses in the underside of the frame 14, that is the side which in the normal operation of the sweeper will face the surface to be swept.
  • axles 21 with the as sociated wheels 17 can be inserted from underneath very readily into these recesses 23 and 24.
  • By appropriately selecting the distance between the adjacent webs 22 it is possible to avoid separate axial retaining means for the wheels on the axles 21, because these wheels can only move within the narrowly defined space 25 and cannot move on the axles 21 beyond this space.
  • Retaining members 26 are provided which serve to retain the axles 21 in the open recesses or journals 23, 24. These retaining members are illustrated in the exemplary embodiment as shelllike components which close the underside of the frame 14, that is they close the recesses 23 and 24.
  • the retaining or closure members extend, as to their length and their width, over the entire region where the wheels 17 are journalled and where the brush 15 is journalled, and are provided only with openings 27 for the wheels 17.
  • those portions of the closure members 26 which are directly opposite the journals are configurated as socket-shaped supporting portions 26 which engage the axles and support them.
  • Each of the members 26 covers the underside of the journalling region of the wheels located at one end of the brush roller 15. They are self-retaining, meaning that they are connected with the frame 14 without separate connecting instrumentalities. This is achieved in the illustrated embodiment by providing them at their opposite ends with inwardly projecting double clamping portions 28 which have at their free ends the projections 29 extending towards one another.
  • the frame 14 is provided with correspondingly configurated transverse webs 30 which connect the longitudinal webs 21 and which can be embraced in clamping engagement by the double projections 28, 29 of the members 26, in such a manner that the projections 29 extend behind the webs 30.
  • the members 26 are provided with openings 31 in the region between the respective projections 28 of each pair, so as to permit the insertion of a tool from underneath through these openings 31, by means of which two of the projections 28 can be deflected to make them disengage from the webs 30.
  • the brush roller is joumalled in a bracket-shaped holder 32 in the illustrated embodiment, and the holder 32 in turn is vertically slidably mounted in vertical guides 33 of the frame 14 of engagement with the portions 22, so that they can be vertically displaced.
  • the portions 34 of the members 26 which extend over the ends of the brush roller 15 are formed with depressions in order to permit undesired frictional engagement of the brush roller with them even when the latter is in the lowest position, and the inner longitudinally extending portions of the frame 14 and of the corresponding parts of the members 26 are provided with openings permitting free shifting of the brush roller 15.
  • the bracket 32 is spring loaded and is associated with an adjusting arrangement 36 which is already known in its construction.
  • the springs 35 which act upon the bracket 32 bear upon the receptacles 19 and in such a manner that they attempt to shift the bracket 32 and the brush roller 15 into an upper position, whereas the adjusting device 36 can be operated to counteract this.
  • the portions constituting the collecting chambers 19 and 20 are located between the adjacent wheels 17, being mounted on the axles 21 thereof for pivoting movement.
  • the frame 14 is a separate component, meaning that it is completely separate from the housing 10 with which it is subsequently connected.
  • the establishment of such connection is made very simple if the frame which in this embodiment is to be connectedwith the lower portion 12 of the housing 10 is provided with a portion 37 which engages the lower housing portion 12 and is formed with openings 38 of substantially T- shaped configuration.
  • the inner wall of the housing is provided with approriately dimensioned and configurated undercut projections 40 formed on the members 39, and the projections 40 can be inserted through the openings 38 so as to engage the vertically extending shoulders 41 and 42, thus preventing a relative movement in vertical and horizontal direction between the frame 14 and the lower housing portion 12, as will be clearly evident from FIGS. 2 and 3.
  • the connection is stabilized by providing several of the coupling components at each side of the housing and frame.
  • cup-shaped brushes 16 could be omitted or could be replaced by an additional brush 15, just as such a brush could be provided in addition to the existing illustrated brush l5 and the brushes 16.
  • the brush 15 could also be directly joumalled in the frame 14 if it is not necessary or desired to make it adjustable in vertical direction.
  • the members 26 could be configurated separately, one for each journal recess, and the portions 19 and 20 forming the chambers for collection of dirt could be produced in other manner, for instance of one piece while leaving an opening for the brush 15 to extend through.
  • the housing could of course be made of one piece instead of the two pieces 11 and 12. Synthetic plastic material is particularly suitable for making many of the components, not only because of the inexpensive manner in which the components can be produced but also because of the light-weight of such material.
  • a combination comprising a housing; a frame supporting said housing and having a side facing a surface to be swept and being provided with journalling recesses; at least one rotary brush means having a mounting axle; a plurality of supporting wheel means also having mounting axles, the axles of at least one ofsaid means being freely received and joumalled for rotation in said recesses; axle-retaining closure members extending across and closing said recesses at said side of said frame; and cooperating snap-coupling portions on said closure members and said frame for releasably connecting the former to the latter.
  • coupling portions on said frame comprising single coupling members; and wherein said coupling portions on said closure members comprise respective sets of dual coupling members adapted to embrace and clampingly engage one of said single coupling members.
  • closure members having openings located intermediate the dual coupling members of the respective sets for insertion of a tool from the exterior of said housing. so as to deflect said dual coupling members out of engagement with the respective single coupling member.
  • said wheel means comprise at least two wheels which are respectively positioned in the region of the opposite ends of said axle of said brush means; and wherein said closure members are shells each of which closes a recess accommodating the axles of a respective group and provided with openings through which the wheels of the respective group extend.
  • said frame 8 comprising vertical guide portions; and further comprising a bracket being vertically displaceable along said guide portions, said bracket being provided with some of said journalling recesses for said brush means.
  • closure members having portions extending under the end regions of said brush means and provided with depressions.
  • connection portions being openings; and further comprising a plurality of undercut projections provided on said housing and receivable in the respective openings.

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  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Cleaning In General (AREA)
US00307566A 1971-11-23 1972-11-17 Sweeper Expired - Lifetime US3818532A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2157968A DE2157968B2 (de) 1971-11-23 1971-11-23 Kehrmaschine, insbesondere Teppichkehrmaschine

Publications (1)

Publication Number Publication Date
US3818532A true US3818532A (en) 1974-06-25

Family

ID=5825855

Family Applications (1)

Application Number Title Priority Date Filing Date
US00307566A Expired - Lifetime US3818532A (en) 1971-11-23 1972-11-17 Sweeper

Country Status (20)

Country Link
US (1) US3818532A (ja)
JP (1) JPS5544607B2 (ja)
AR (1) AR197201A1 (ja)
AT (1) AT331449B (ja)
AU (1) AU473786B2 (ja)
BE (1) BE791623A (ja)
BR (1) BR7208213D0 (ja)
CA (1) CA963615A (ja)
CH (1) CH539420A (ja)
DE (1) DE2157968B2 (ja)
DK (1) DK137592C (ja)
ES (1) ES408127A1 (ja)
FR (1) FR2160788B1 (ja)
GB (1) GB1405163A (ja)
IL (1) IL38862A (ja)
IT (1) IT947231B (ja)
NL (1) NL7201930A (ja)
SE (1) SE378981B (ja)
TR (1) TR17913A (ja)
ZA (1) ZA726503B (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909869A (en) * 1973-05-28 1975-10-07 Fukuba Future Research Floor sweeper
US4028765A (en) * 1975-07-24 1977-06-14 Leifheit International Gunter Leifheit Gmbh Floor or carpet sweeper
US4040138A (en) * 1974-01-15 1977-08-09 Leifheit International Gunter Leifheit Gmbh Drive for use in a sweeping device
US4086677A (en) * 1975-03-04 1978-05-02 Leifheit International Gunter Leifheit Gmbh Cleaning device
US8726441B1 (en) 2009-09-28 2014-05-20 Bissell Homecare, Inc. Floor sweeper with split brush assembly
DE102020109694A1 (de) 2020-04-07 2021-10-07 Alfred Kärcher SE & Co. KG Boden-Reinigungsmaschine, insbesondere für textile Böden

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2600102B2 (de) * 1976-01-02 1981-04-02 Leifheit International Günter Leifheit GmbH, 5408 Nassau Kehrmaschine, insbesondere Teppichkehrmaschine
US4124913A (en) * 1977-06-29 1978-11-14 Bissell, Inc. Floor sweeper with unitary frame
DE3009648C2 (de) * 1980-03-13 1983-03-17 Hans 5226 Reichshof Wessel Staubsaugerdüse mit einem Anschlußelement und einer Gleitsohle
DE102005041867A1 (de) * 2005-09-02 2007-03-08 BSH Bosch und Siemens Hausgeräte GmbH Staubsaugerdüse

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB326989A (en) * 1929-03-12 1930-03-27 Entwisle & Kenyon Ltd Improvements in carpet sweepers
US3159860A (en) * 1963-02-21 1964-12-08 Goldschmidt & Associates Inc H Sweeping apparatus
US3618153A (en) * 1969-11-13 1971-11-09 John H Coult Hand-held litter-collecting device with cooperating fixed and rotated brushes
US3631557A (en) * 1969-02-21 1972-01-04 Leifheit International Sweeper

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB326989A (en) * 1929-03-12 1930-03-27 Entwisle & Kenyon Ltd Improvements in carpet sweepers
US3159860A (en) * 1963-02-21 1964-12-08 Goldschmidt & Associates Inc H Sweeping apparatus
US3631557A (en) * 1969-02-21 1972-01-04 Leifheit International Sweeper
US3618153A (en) * 1969-11-13 1971-11-09 John H Coult Hand-held litter-collecting device with cooperating fixed and rotated brushes

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3909869A (en) * 1973-05-28 1975-10-07 Fukuba Future Research Floor sweeper
US4040138A (en) * 1974-01-15 1977-08-09 Leifheit International Gunter Leifheit Gmbh Drive for use in a sweeping device
US4086677A (en) * 1975-03-04 1978-05-02 Leifheit International Gunter Leifheit Gmbh Cleaning device
US4028765A (en) * 1975-07-24 1977-06-14 Leifheit International Gunter Leifheit Gmbh Floor or carpet sweeper
US8726441B1 (en) 2009-09-28 2014-05-20 Bissell Homecare, Inc. Floor sweeper with split brush assembly
DE102020109694A1 (de) 2020-04-07 2021-10-07 Alfred Kärcher SE & Co. KG Boden-Reinigungsmaschine, insbesondere für textile Böden

Also Published As

Publication number Publication date
DK137592B (da) 1978-04-03
IL38862A (en) 1975-07-28
CH539420A (de) 1973-07-31
ZA726503B (en) 1973-06-27
FR2160788B1 (ja) 1975-08-29
ATA806572A (de) 1975-11-15
GB1405163A (en) 1975-09-03
JPS4863558A (ja) 1973-09-04
FR2160788A1 (ja) 1973-07-06
AT331449B (de) 1976-08-25
AR197201A1 (es) 1974-03-22
SE378981B (ja) 1975-09-22
DE2157968B2 (de) 1975-01-30
ES408127A1 (es) 1975-11-16
TR17913A (tr) 1976-11-01
IT947231B (it) 1973-05-21
IL38862A0 (en) 1972-05-30
AU4758672A (en) 1974-05-23
CA963615A (en) 1975-03-04
NL7201930A (ja) 1973-05-25
BE791623A (fr) 1973-03-16
DE2157968A1 (de) 1973-06-07
DK137592C (da) 1978-09-18
JPS5544607B2 (ja) 1980-11-13
AU473786B2 (en) 1976-07-01
BR7208213D0 (pt) 1973-10-09

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