Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
  • B25G—HANDLES FOR HAND IMPLEMENTS
  • B25G3/00—Attaching handles to the implements
  • B25G3/02—Socket, tang, or like fixings
  • B25G3/12—Locking and securing devices
  • B25G3/30—Locking and securing devices comprising screwed sockets or tangs
• • 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
  • A47L1/00—Cleaning windows
  • A47L1/06—Hand implements
• • 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
  • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
  • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
  • A47L13/12—Implements with several different treating devices
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
  • B25G—HANDLES FOR HAND IMPLEMENTS
  • B25G3/00—Attaching handles to the implements
  • B25G3/02—Socket, tang, or like fixings
  • B25G3/08—Socket, tang, or like fixings with dovetail or other groove
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
  • B25G—HANDLES FOR HAND IMPLEMENTS
  • B25G3/00—Attaching handles to the implements
  • B25G3/02—Socket, tang, or like fixings
  • B25G3/10—Socket, tang, or like fixings with elastic, taper, or other self-grip socket or tang
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
  • B25G—HANDLES FOR HAND IMPLEMENTS
  • B25G3/00—Attaching handles to the implements
  • B25G3/02—Socket, tang, or like fixings
  • B25G3/12—Locking and securing devices
  • B25G3/18—Locking and securing devices comprising catches or pawls

Definitions

• the invention relates to a hand-held device for cleaning smooth surfaces and for wiping off washing liquid from such surfaces according to the preamble of patent claim 1.
• Handheld devices of this type are known from US-A-3,110,052, US-A-5,083,338 or WO 93/8725. They enable smooth surfaces to be cleaned and dried in one operation because the cleaning element and the scraper element are arranged at the front end of the hand-held device.
• the cleaning element and the scraper element consist of a cleaning pad and a scraper.
• the cleaning pad serves among other things for receiving the washing liquid when it is wiped downwards on the smooth surface in order to prevent contamination from surfaces delimiting the smooth surface at the lower end, e.g. B. to avoid a window frame if possible.
• the known handheld devices can be equipped with a handle so that the user can also reach and clean remote areas of the surface to be cleaned.
• the invention is based on the object of improving a hand-held device of the known type mentioned in such a way that an extraordinarily compact, shapely and optimally manageable hand-held device is created, in which the cleaning member and the scraper member are arranged one behind the other in the hand-held device and together, but also separately from each other as an independent one Working device can be used, the means for the detachable connection of cleaning device and stripping device being hardly recognizable and not impairing the handling of the devices.
• These practically invisible connecting means are intended to enable a secure connection of the two tools, but nevertheless to ensure a simple separation of the two tools by hand.
• the hand-held device permits the approximately simultaneous washing and stripping of surfaces to be cleaned. It is also possible to easily separate both tools by hand, so that the cleaning device and the scraper, e.g. B. can be used by two people at the same time, but independently of each other.
• the stripping device is used with a lateral engagement part in a lateral receiving part up to a stop of a front stripper holder for a guide rail of the stripping device holding a stripping lip on a front edge of a wiper plate of the cleaning device.
• the two devices are then detachably connected to one another by inserting a locking cone in ends of the handles of the two devices which are coaxially one inside the other and form a common, conical locking opening. In this way, an interlocking connection of both tools is created in the axial direction of the hand tool, which is secured in the direction transverse to the longitudinal axis of the hand tool by the locking cone.
• the handle of the stripping device is pushed into a front insertion opening of the hollow handle of the cleaning device with a sliding fit until its front stripper holder on the front edge of the wiper plate of the cleaning device, and in its end position with the latter by a latching device releasably connected, which is provided between the two handles.
• a latching device is again provided between the hollow handles of both tools.
• the inner end of a conical opening in the handle of the cleaning device limits the insertion path for the handle of the scraper.
• the handle of the stripping device is in turn telescopically pushed in until the stripper holder stops on the wiper plate, the detachable connection of the stripping device to the cleaning device by at least one locking device and / or at least one in the end position of the stripping device Frictional connection is provided.
• the locking device can be formed by locking cams on the front edge of the wiper plate of the cleaning device, which locking recesses in the scraper holder of the scraper correspond.
• the frictional connection can consist of a clamping groove clamp connection between the cleaning head and the stripper head of both tools.
• a frictional connection between the stripper head of the cleaning device and the cleaning head of the cleaning device can be provided, in which the top of the cleaning head has a wedge-like surface forms for the underside of the scraper head, by means of which the scraper head is raised slightly in the cleaning device before the end position of the scraper device is reached, so that the top of the handle of the scraper device against the top of the inner wall in the front end of the handle of the cleaning device with from Hand releasable friction is pressed.
• FIG. 1 shows a first embodiment of a hand-held device in a partially broken top view, a cleaning device and a stripping device being detachably connected to one another;
• FIG. 2 shows the hand-held device according to FIG. 1 in a side view, partially broken away; 3 shows the cleaning device of the hand-held device according to FIGS. 1 and 2, separated from the stripping device, in a top view; 4 shows the stripping device of the hand-held device according to FIGS. 1 and 2 separated from the cleaning device in a bottom view;
• Fig. 5 is a vertical central longitudinal section V-V of
• FIG. 3 shows a central longitudinal section VI-VI of the stripping device in FIG. 4;
• Fig. 7 is a side view of a locking member
• Fig. 8 is an end view of the locking member in
• FIG. 7 shows a cross section IX-IX of the assembled hand-held device in FIG. 2; 10 shows a further cross section XX of the assembled hand-held device in FIG. 2;
• FIG. 11 shows a perspective, partially broken away view of a second embodiment of a hand-held device according to the invention in a partially assembled state
• FIG. 12 shows a central longitudinal section of the cleaning device in FIG. 11 approximately along the section line XII-XII;
• FIG. 13 is a side view of the stripping device of the hand-held device shown in FIG. 11;
• FIG. 14 shows a side view of a third embodiment of a hand-held device according to the invention, in the assembled state and partly in a central longitudinal section; 15 shows a fourth embodiment of a hand-held device according to the invention in plan view, in a partially broken away representation;
• FIG. 16 shows a vertical central longitudinal section XVI-XVI of the hand-held device in FIG. 15;
• Fig. 17 shows a longitudinal section XVII-XVII of the handheld device in
• FIG. 18 shows a cross section XVIII-XVIII of the hand-held device in FIG. 15;
• FIGS. 15 to 18 is a perspective bottom view of the hand-held device according to FIGS. 15 to 18, the stripping device being partially inserted into the cleaning device;
• 20 shows the cleaning device of the hand-held device in FIG. 15 in a top view
• 21 shows the stripping device of the hand-held device in FIG. 15 in
• FIG. 22 shows the stripping device of the hand-held device in FIG. 15 in a lower view
• FIG. 23 shows the stripping device according to FIGS. 21 and 22 in side view
• FIG. 24 the cleaning device according to FIG. 20 in side view;
• various embodiments of a hand-held device are shown, which are used for cleaning smooth surfaces and for wiping liquid off the surfaces mentioned.
• a cleaning member and a wiper for liquid are arranged at the front end of a handle.
• the cleaning member is assigned to a cleaning device which is provided with a handle and the stripping member is assigned to a stripping device which also has a handle.
• the cleaning device and the stripping device can be used independently of one another, but can also be detachably connected to one another in such a way that with this hand device the cleaning or washing off of surfaces and the stripping of liquid, in particular washing or cleaning liquid, takes place approximately simultaneously can be made, or, after loosening the connection between the cleaning device and the stripper, each of these two tools can be used alone.
• a first embodiment of such a hand-held device 20 is shown. 1 and 2, a cleaning member 22 and a wiper 24 for liquid are arranged at the front end 26 of a handle 28 horizontally and transversely to its longitudinal axis.
• the cleaning member 22 is associated with a cleaning device 30 made of plastic and the stripping member 24 is associated with a stripping device 32 also made of plastic, which are detachably connected to one another and can therefore also be used separately.
• a curved division plane T extends between the lower cleaning device 30 in FIG.
• the dividing plane T in front of a rear end 21 of the handle 28 at T1 is cut downwards and forwards into the handle 28 from a smooth upper side 27 of the handheld device 20. Subsequently, the division plane T runs horizontally at an obtuse angle to the incision Tl in the transverse direction of the handle 28, but in the longitudinal direction of the handle 28 according to its main axis to the front and slightly obliquely downwards.
• the division plane T separates a lower handle 34 and a front cleaning head 23 of the cleaning device 30 from an overlying handle 36 and a scraper head 25 of the scraper device 32 and ends in a stop edge 42 of the cleaning head 23 directed transversely to the longitudinal direction of the hand tool 20 (FIG. 3) .
• This stop edge 42 of the cleaning head 23 lies against a stop strip 52 of the scraper head 25 which is hook-like in cross-section and is drawn backwards (FIGS. 2 and 6), so that both devices 30, 32 are closely connected at the front.
• This stop bar 52 is attached in one piece to the underside of a tubular scraper holder 46 for the scraper member 24, which forms a front end of the scraper head 25 in the transverse direction of the hand-held device 20 and extends over its width. If desired, the wiper holder 46 can also extend completely beyond both sides of the wiper head 25.
• the handle 36 of the stripping device 32 is provided on both opposite sides of its rear end with laterally projecting webs 35, 37 which facilitate the separation of the two devices 30, 32.
• the carrier for the cleaning member 22 consists of a wiper plate 38 which fastens an integral part of the front end of the handle 34, which is smooth on the underside, horizontally and transversely to its longitudinal direction and whose front edge 40 is at least partially designed as the stop edge 42 (Fig. 3).
• the stop edge 42 of the wiper plate 38 is formed by a right-angled cutout 44 in the front edge 40 of the wiper plate 38 and is accordingly set back relative to the front edge 40 parallel to the latter.
• the cutout 44 is provided on the middle width of the wiper plate 38. If necessary, however, a plurality of cutouts 44 can also be provided to form a plurality of stop edges 42 distributed over the width of the wiper plate 38, to which a corresponding number of hook-shaped stop strips 52 on the wiper head 25 are assigned.
• the wiper plate 38 has on its underside a flat, wide transverse groove 39 in which, for. B. can be arranged by gluing or screwing a Velcro strip 41, on the underside of which a cleaning pad 43 can be exchangeably attached.
• a cleaning pad 43 can be exchangeably attached.
• other fastening options can also be considered, such as. B. A rail with snaps or the like.
• the cleaning pad 43 may consist of a plush fur that is sewn around a foam core.
• the cleaning pad can also consist of cores with different combinations of polyurethane viscose or the like with a covering made of plush fur, nonwovens, etc.
• the shape of the foam core results in an improved contact surface on the surface to be cleaned.
• the foam core also stores moisture so that large areas can be cleaned.
• the attachment of other cleaning cushions such. B. viscose sponges possible. The simple attachment ensures easy replacement of the cleaning pad.
• the tubular, in cross section horseshoe-shaped scraper holder 46 forms the support for the scraper element 24.
• the scraper holder 46 is along a surface line with the at least one stop bar 52 for the stop edge 42 of the wiper plate 38 of the cleaning device 30 provided in Fig. 3.
• the stop bar 52 is, as mentioned, hook-shaped in cross section obliquely downward and towards the rear end of the cleaning device 30 so that the surface of the stop bar 52 facing the rear end of the hand-held device 20 is an abutment for the stop edge 42 of the wiper plate 38 of the cleaning device 30 forms when the cleaning device 30 and the stripping device 32 are combined to form the hand-held device 20.
• the opening of the cross-section horseshoe-shaped profile of the wiper holder 46 is formed by a longitudinal slot 50 which is directed obliquely forward and downward.
• a clip-like profiled guide rail 48 made of metal or plastic is inserted into the tubular scraper holder 46, which is held interchangeably by latching tongues (not shown) or by gluing.
• the guide rail 48 encompasses a larger part of the upper side and the rear edge and a smaller part of the underside of a wiper lip 54 made of elastic material, such as preferably rubber or plastic, which can have a transverse profile adapted to the guide rail 48.
• the wiper lip 54 is used in a known manner to wipe cleaning or washing liquid from a smooth surface to be cleaned of any objects, such as window panes, facades, etc.
• the connection between the handles 34, 36 of the cleaning device 30 and the stripping device 32 also consists of a plug-in connection 56 (FIG. 2), through which the cleaning device 30 and the stripping device 32 can be fixed in a substantially positive manner in the axial direction.
• the plug connection 56 is composed of a lateral receiving part 58 in the handle 34 of the cleaning device 30 and a lateral engagement part 60 in the handle 36 of the stripping device 32 (FIGS. 3, 4, 5 and 6).
• the receiving part 58 in the handle 34 of the cleaning device 30 and the engaging part 60 of the handle 36 of the stripping device 32 extend over part of the length of their associated handles 34, 36 and are in each case the rear half of the handle 34 or 36 of the cleaning device 30 or Stripper 32 assigned.
• the receiving part 58 is provided in the upper side 62 of the cleaning device 30 and the engaging part 60 in a lower side 64 of the stripping device 32 (FIGS. 3 and 4).
• the receiving part 58 in the upper side 62 of the cleaning device 30 consists of a recess 66 (FIGS. 3 and 5) which is U-shaped or semicircular in cross section of the handle 34 of the cleaning device 30 (FIG. 10).
• This recess 66 of the receiving part 58 extends in the longitudinal direction of the cleaning device 30 over a length which is larger than the width of the U-shaped recess 66.
• the U-shaped recess 66 is tapered over its entire length at a certain cone angle in the direction of the front end of the cleaning device 30 at 68 (FIG. 3). The meaning of this conical taper 68 is explained below.
• a front face 70 of a securing device 100 and a rear face 72 of a locking sleeve 77 of the cleaning device 30 close one acute, opening angle to the top 62 of the cleaning device 30 and at least partially limit the recess 66 of the receiving part 58 of the cleaning device 30.
• the front and rear end faces 70, 72 of the recess 66 in the cleaning device 30 each form a stop for a front and a rear end face 74, 76 of the engaging part 60 of the stripping device 32 (FIGS. 4 and 6).
• the cleaning device 30 and the stripping device 32 are part of the locking device 55 (FIG. 2), by means of which the connection of the cleaning device 30 and the stripping device 32 to one another in the form of the hand-held device 20 shown in FIGS. 1 and 2 is maintained - can be obtained.
• the details of this locking device 55 are explained in more detail below.
• the rear end of the handle 34 of the cleaning device 30 consists of a locking sleeve 77, which has a continuous, essentially axial opening 78.
• This axial opening 78 is tapered towards the front and is delimited at the rear by an end 79 and at the front by the end 72 of the locking sleeve 77 already mentioned above.
• the engaging part 60 is a conical body which, with approximately two thirds of its cross-sectional dimension, projects over the underside 64 or parting plane T of the stripping device 32 over its entire length, but is made in one piece with its handle 36.
• the engagement part 60 has in its rear end face 76 an axial recess 80 (FIGS. 4, 6) which tapers conically towards the front and is closed there by a base 81 (FIG. 6).
• the bottom 81 is arranged at a distance behind the front end face 74 of the engaging part 60.
• a rear opening 82 of the recess 80 is from the rear End face 76 of the engaging part 60 or handle 36 of the stripping device 32 is limited.
• the cone angle of the axial opening 78 in the locking sleeve 77 and the recess 80 in the engagement part 60 is approximately identical.
• the axial opening 78 in the locking sleeve 77 and the recess 80 in the engagement part 60 in the assembled state of the handheld device 20 can jointly form a locking opening 84 as part of the locking device 55.
• This locking opening 84 is indicated by dashed lines in FIG. 2 and serves to receive a locking member as a second component of the locking device 55.
• This locking member consists of a locking bolt 86 which is inserted into the said locking opening 84 in FIGS. 1 and 2.
• the locking bolt 86 has a conical shape approximately corresponding to the locking opening 84 and at its rear end an enlarged handle part 88, which is roughened on the outside to improve the grip by knurling 90 or the like is.
• a central insertion opening 92 is provided in the handle part 88, the wall of which is provided with an internal thread 94 for screwing in an auxiliary device.
• This auxiliary device can consist of an extension handle and / or a joint, which can be inserted or screwed into the insertion opening 92 of the locking bolt 86 if required.
• the locking bolt 86 and the locking opening 84 are slightly oval in cross section or are provided with longitudinal ribs (not shown) in order to ensure a firm but detachable fit of the locking bolt 86 in the locking opening 84.
• the locking bolt 86 can, however, also have a partially or completely machined thread or annular beads or a part of one Bayonet lock or a conventional latching connection to be provided in order to engage or snap into a corresponding mating thread or in annular beads of the stripping device and cleaning device when the cleaning device and stripping device are closed.
• the handle 34 of the cleaning device 30 has a bowl-shaped recess 96 in front of its receiving part 58 and is provided with at least a first part 98 of the safety device 100 mentioned (FIGS. 5 and 9).
• This first part 98 of the securing device 100 interacts with a second part 102 of the securing device 100 on the stripping device 32 in order to prevent guidance between the stripping device 32 and the cleaning device 30.
• the securing device 100 consists of one or more tongue and groove connections, which are explained below.
• this tongue and groove connection between the handles 34, 36 of the cleaning device 30 and the stripping device 32 is provided alternately.
• the top 62 of the front longitudinal half of the handle 34 of the cleaning device 30 has the cup-shaped recess 96, which forms a U-shaped longitudinal groove 104 in the longitudinal direction of the cleaning device 30, which extends from a front end 106 of the receiving part 58 to the top of the Cleaning head 23 extends forward and upward.
• the two legs of this U-shaped longitudinal groove 104 are formed by handle walls 108, 110.
• Three locking ribs 112, 114, 116 project vertically upward from the bottom of this longitudinal groove 104 and extend parallel to the longitudinal axis of the handle 34 and stiffen it.
• the locking ribs 112, 114, 116 together with the handle walls 108, 110 form four locking grooves 118, 120, 122, 124 of the same width.
• the height of the locking ribs 112, 114, 116 corresponds to that of the upper, longitudinally slightly curved upward longitudinal edge 126, 128 of the opposite and longitudinally extending handle walls 108, 110. Since the U-shaped longitudinal groove 104 runs out on the upper side 27 of the cleaning head 23, the longitudinal groove 104 narrows in that the inner sides 130, 132 of the handle walls 108, 110 cut the outer sides of the outer locking ribs 112 and 116 at the front end of the cup-shaped recess 96 (Fig. 3).
• the underside 64 of the handle 36 of the stripping device 32 is with a bulge 134 (Fig. 6 and 9) in a before See engaging part 60 lying length section of the handle 36.
• the bulge 134 in turn forms a longitudinal groove 136 with an inverted U-profile, from the bottom 137 of which parallel to the longitudinal axis of the handle 36 and at a distance from one another four locking ribs 138, 140, 142, 144 protrude vertically downward (FIG. 9).
• These four locking ribs 138, 140, 142, 144 of the stripping device 32 serve to stiffen the stripping handle 36 and form three locking grooves 146, 148, 150 of the same width, which are slightly larger than the width of the three locking ribs 112, 114, 116 of the cleaning device 30 .
• the three locking ribs 112, 114, 116 of the cleaning device 30 can engage in the three locking grooves 146, 148, 150 of the stripping device 32.
• the four locking ribs 138, 140, 142, 144 of the scraper device 32 engage in the four locking grooves 118, 120, 122, 124 of the cleaning device 30 when the two devices 30, 32 are combined with one another by lateral plugging in to form the compact handheld device 20 to form.
• the locking grooves and locking ribs described above reduce the material expenditure and thus the weight for the two devices 30, 32, but at the same time, in addition to the stiffening of the handles mentioned, a stable alignment and connection of the devices 30, 32 over their entire length guarantee.
• the shape of the interlocking elements of both devices 30, 32 can also be modified, if necessary.
• the two middle locking ribs 140, 142 of the stripping device 32 extend to the front end face 74 of the engaging part 60.
• Lower longitudinal edges 152, 154 of these two middle locking ribs 140, 142 are on a rear length section, which is about three quarters corresponds to the length of these locking ribs 140, 142, arranged essentially parallel to an underside surface line 156 of the conical engagement part 60 (FIG. 6), but offset in terms of height in relation to the underside surface line 156 of the engagement part 60.
• the height of the locking ribs 140, 142 above the bottom of the inverted U-shaped longitudinal groove 136 in the scraper handle 36 is increasingly reduced to the level of the underside 64 of the handle 36 which determines the division plane T.
• the two outside locking ribs 138 and 144 of the stripping device 32 are shorter in the rear and extend at their rear end only up to a groove 158 of the longitudinal groove 104 (FIG. 4), into which the front end face 74 merges, as shown in FIG. 6 shows, with their rear end edges 160, 162 beveled downwards and forwards.
• Lower longitudinal edges 164, 166 of these outer locking ribs 138, 144 run at a lower height than the lower longitudinal edges 152, 154 of the middle pair of locking ribs 140, 142, but parallel to them on a rear half of their length.
• the two outer locking ribs 138, 144 are angled to the level of the underside of the wiper head 25 and, like the two middle locking ribs 140, 142, end in a front, fluted end surface 168 (FIG. 4) of the reversely U-shaped longitudinal groove 104 of the stripping device 32.
• FIG. 3 the rear end of the central locking rib 114 of the cleaning device 30 projects rearward beyond the rear ends of the adjacent locking ribs 112, 116 and, as mentioned, as the front end 70 of the receiving part 58 in the cleaning device device 30 forms a stop for the front end face 74 of the engaging part 60 of the stripping device 32 in FIG. 4.
• the cleaning device 30 and the stripping device 32 are firmly but releasably connected to one another as a combined hand-held device 20 when the locking ribs and locking grooves of the two devices 30, 32 engage completely and are locked by the locking bolt 86.
• the locking ribs and the locking grooves of the cleaning device 30 and the stripping device 32 form locking elements and their receiving openings. If necessary, such locking elements can naturally also be present in the devices 30, 32 in the form of at least one bolt and at least one receiving opening provided therefor, because only the axial and lateral fixing of both devices is essential when they are assembled together to form the handheld device 20 .
• the receiving part 58 and the engaging part 60 ' can also be designed as a snap-in connection, by means of which the two devices 30, 32 are held together, because for this purpose only the two devices 30, 32 are in the assembled state opposite end faces or longitudinal sides of the receiving part 58 and the engaging part 60 are to be equipped with corresponding locking elements.
• the hand-held device 20 illustrates that this z. B. can be used as a window wiper, in which the scraper element 24 serves as a water scraper and the cleaning element 22 serves as a window cleaner.
• Both devices can be firmly connected to one another by means of the conical locking bolt 86 to form the single hand-held device 20, and can be separated into two separate devices 30, 32 by unscrewing the locking bolt 86. Since the locking bolt 86 is equipped with the internal thread or the like at the rear end, an extension and / or a joint can be screwed into it if necessary. The locking bolt 86 can be screwed into the stripping device 32 or into the cleaning device 30 alone, as well as into the hand-held device 20 composed of these devices 30, 32.
• the wiping lip 54 and the cleaning pad 43 are located on the underside of the hand-held device 20, the surface to be cleaned, e.g. B. a window, washed and dried.
• the cleaning liquid obtained when wiping off, such as water, is taken up again by the cleaning cushion 43.
• FIG. 11 illustrates a second embodiment of a hand-held device 200 according to the invention, a connection of a cleaning device 230 to a stripping device 232 that is different from the first embodiment being shown.
• a handle 228 of the hand-held device 200 is composed of an outer, tubular handle 234 of the cleaning device 230, the front end 226 of which, as in the previous embodiment, is increasingly widened towards the front and of uniform design with a transversely extending wiper plate 238 is. 11, a preferably hollow, tubular handle 236 of the stripping device 232 is partially inserted coaxially into the tubular handle 234 of the cleaning device 230. With a further insertion movement of the stripping device 232 As in the first embodiment described above, a stop bar 252 directed towards the rear and downward, not shown in FIG. 11, of a scraper holder strikes a centrally arranged stop edge 242, which sets back parallel to a front edge 240 of the wiper plate 238 is.
• the locking device is designed so that the stripping device 232 rests with a certain axial preload with its stop bar 252 on the front edge 240 of the wiper plate 238. This pretension is so large that even under extreme working conditions, in which stronger forces are exerted on the combined hand-held device 200, the described fixed but always manually releasable connection between the cleaning device 230 and the stripping device 232 is maintained.
• the tubular handle 234 of the cleaning device 230 is provided with a front, upper cutout 202 which corresponds to approximately one third of the entire length of the cavity 201 or of the handle 234.
• the cutout 202 forms an approximately right-angled division plane T2 of the hand-held device 200.
• This division plane T2 is initially perpendicular to approximately the central longitudinal axis of the cleaning device 230 and then approximately horizontally in a gentle curve forward and down to the front, lower end 204 of an insertion opening of the cavity 201.
• the division plane T2 ends in a bead-shaped end face 205 of the cleaning head 223.
• the end face 205 is connected in one piece to the wiper plate 238 on the underside, which is stiffened on the back by at least one stiffening rib 206 relative to the handle 234.
• the rear end of the cavity 201 is closed by a transverse wall 207, beyond which the handle 234 extends with a rear tubular end 208 reinforced in diameter, in which an axial opening 209 is provided.
• This opening 209 extends as far as the transverse wall 207 and is tapered in the shape of a circular truncated cone towards the transverse wall 207, the inner wall of the opening 209 being provided with an internal thread 210.
• This axial opening 209 is used to insert an auxiliary device, for. B. an extension handle.
• this latching device can consist of at least one projection, which in FIG. 12 is designed as an annular latching bead 211 on the inner wall of the cavity 201, which has an annular latching groove 212 on the outside of the handle 236 of the Stripper 232 in Fig. 13 corresponds.
• the axial distance of the locking bead 211 from the front edge 240 of the wiper plate 238 and the axial distance of the locking groove 212 from the stop bar 252 of the cleaning device 230 is chosen so that the locking bead 211 in the fully inserted state of the handle 236 in the handle 234 an axial Biasing with the leading edge 240 exerts on the stop bar 252 of the stripping device 232 in order to achieve an axially fixed connection between the cleaning device 230 and the stripping device 232.
• the stripping device 232 is shown with its handle 236 and a stripping head 225.
• the wiper head 225 completely fills the cutout 202 of the handle 234 of the cleaning device 230 in such a way that a closed surface of the combined hand device 200 is created, which is one ensures comfortable handling of the hand-held device.
• FIG. 14 shows a third embodiment of a hand-held device 300 according to the invention, in which a parting plane T3, which is angled to the longitudinal axis of the cleaning device 330, is provided between the stripping device 332 with the stripping head 325 and the cleaning device 330 with a tubular handle 334.
• the rear ends of both the tubular handle 334 of the cleaning device 330 and the tubular handle 336 of the stripping device 332 are open and have conical openings 309 and 310 which widen towards the rear.
• An axial, inner annular shoulder 331 is arranged on the inside of the rear end of the hollow scraper handle 334, against which the rear end of the handle 336 of the scraper device 332 bears.
• FIG. 14 an annular groove in an inner wall 301 and a corresponding annular bead on the outside of the handle 336 of the stripping device 332 are provided and are effective in the manner already described.
• the openings 309 and 310 are each provided with an internal thread 311, 312 in such a way that, when the two devices 330, 332 are in the assembled state, they have a common, axial, truncated cone widening towards the rear end Form the opening so that a rod-shaped auxiliary device, such as an extension handle, is also only inserted into the opening 309 of the cleaning device 330 or only into the opening 310 of the stripping device 332 for the individual actuation of these devices, but also into the screw opening formed jointly and fastened therein can be.
• a rod-shaped auxiliary device such as an extension handle
• 15 to 26 illustrate a fourth, particularly preferred embodiment of a hand-held device 400 according to the invention, the further detachable connection possibilities of a cleaning device 401 with a stripping device
• 402 contains. 15 and 16 is a handle
• the hand-held device 400 composed of an outer, tubular handle 404 of the cleaning device 401, the front end 405 of which is increasingly widening forward and downward as a cleaning head 406 according to FIGS. 20 and 24, with a transversely extending wiper plate 407 and uniformly formed at the rear end an opening 431 is provided.
• a tubular handle 408 of the stripping device 402 is telescopically inserted into the handle 404 of the cleaning device 401.
• the scraper device 402 has a scraper head 409, the tubular scraper holder 410 in turn receiving a guide rail 411 for a scraper lip 412.
• the guide rail 411 with a central spring tongue 413 bendably engages in a front, central recess 414 of the wiper holder 410 (FIGS. 16 and 22), so that the guide rail 411 with the wiper lip 412 clamped therein can be easily exchanged.
• the front edge 415 of the wiper plate 407 in turn has a right-angled cutout 416 with a parallel stop surface 417 axially set back from the front edge 415 of the wiper plate 407 for the wiper holder 410 of the guide rail 411.
• a latching device 418 (FIG. 17) is provided between the outer surface of the handle 408 of the stripping device 402 and the inner surface of the cylindrical cavity of the handle 404 of the cleaning device 401.
• This latching device 418 begins to take effect shortly before the stripping device 402 has reached its complete, above-described insertion end position in the handle 404 of the cleaning device 401.
• the wiper device 402 with its wiper holder 410 bears against the stop surface 417 of the wiper plate 407 with a certain axial preload. This preload is so large that even under extreme working conditions, in which stronger forces are exerted on the combined hand-held device 400, the described fixed but manually releasable connection between the cleaning device 401 and the stripping device 402 is maintained.
• a run-up surface 422 extending upwards and backwards at the front end of the locking cams 419, 420 is at the same time part of an upper, transversely extending locking rib 423, which slopes downwards and downwards into a locking groove 424 parallel to the locking rib 423.
• the locking groove 424 is delimited on the back by the stop surface 417 of the cutout 416.
• the height of the locking cams 419, 420 extends approximately to half the height of the front edge 415 or stop surface 417 of the wiper plate 407.
• a more or less large number of locking cams of other shapes can of course also be used.
• two latching recesses 425, 426 are provided on the underside of the scraper holder 410 of the scraper head 409, which have corresponding dimensions to the latching cams 419, 420 of the cleaning device 401.
• the latching recesses 425, 426 are provided with a rear boundary edge 427. This limiting edge 427 of the stripping device 402 strikes the oblique contact surface 422 of the locking cams 419, 420 when the same is axially pushed into the handle 404 of the cleaning device 401 before the locking cams 419, 420 by elastic bending into them engage the respective assigned recess 425, 426 and firmly but releasably connect the two tools 401, 402.
• the releasable connection between the two working devices 401, 402 either in combination with one or more of the hand-releasable fastening devices described above, such as, for. B. the locking device 418, between the tubular scraper bracket 410 of the scraper 402 and the wiper plate 407 of the cleaning device 401, or only with the help of one or more frictional or clamping connections directly between the two stitched tools 401, 402 in an extremely simple manner and essentially invisible to the user.
• Such manually releasable frictional connections can, if desired, also be entirely sufficient to connect both implements 401, 402 sufficiently firmly, but nevertheless releasably by hand.
• the fourth exemplary embodiment of the hand-held device 400 according to the invention is shown with a first embodiment of such a frictional connection.
• This frictional connection is designated 433 and consists of a clamping spring-clamping groove connection, which is composed of at least one clamping spring and at least one associated clamping groove.
• two clamping springs 434, 435 can be seen, which are formed in one piece with the wiper head 409 and protrude vertically from the underside thereof. 22, the clamping springs 434, 435 are connected at the axially front end by means of a connecting web 436, 437 to the rear of the tubular scraper holder 410 and the underside of the scraper head 409.
• These connecting webs 436, 437 are narrower and therefore more flexible than the clamping springs 434, 435 and therefore impart a desired additional lateral flexibility to the clamping springs; they have z. B. an axial length of about 2 mm and a width of about 1.5 mm, while the width of the free, lower longitudinal edge 438, 439 of the clamping springs 434, 435 corresponds to about 4 mm.
• the clamping springs 434, 435 have a transverse profile, the width of which from the lower longitudinal edge 438, 439 of each clamping spring 434, 435 upwards on its outer side 434a, 435a except for a smaller width of z. B. 3 mm is reduced.
• each clamping spring 434, 435 preferably extends only over a lower third, z. B. over only 4 mm of their total height.
• opposite side surfaces 440, 441 of the two clamping springs 434, 435 form a distance, together with the underside of the scraper head 409, which is curved forward and downward, forming an open bottom and rear Central longitudinal groove 442, the profile of which is similar to that of an inverted U.
• These side surfaces 440, 441 of the clamping springs 434, 435 forming the groove walls of the central longitudinal groove 442 form an acute, downwardly opening angle and are directed parallel to the central longitudinal axis of the stripping device 402.
• the lower, free longitudinal edges 438, 439 are arranged in a common plane parallel to the central longitudinal axis of the stripping device 402 at a height which extends at a distance above the latching recesses 425, 426 of the tubular stripper holder 410.
• the clamping springs 434, 435 are free from the tubular scraper holder 410 to the rear over a length of z. B. about 16 mm in front and have a trapezoidal surface in side view (Fig. 16).
• 16 and 18 of the downwardly open, acute-angled central longitudinal groove 442 forms with a vertical, flat rear 444 of the tubular scraper holder 410 in FIG. 17, with which the front ends of the clamping springs 434, 435 are connected, an obtuse angle (Fig. 16).
• the front end 432 of the handle 408 of the stripping device 402 is tapered and ends at a small axial distance in front of the rear end faces 445 of the clamping springs 434, 435.
• the cleaning device 401 is provided with two clamping grooves 446, 447 at the front end of the cutout 429 surrounding an insertion opening 463 in the middle of the inner wall of the handle 404 which is approximately U-shaped there in cross section.
• These clamping grooves 446, 447 have a dovetail-like cross-section, that is to say they widen to the bottom of the groove, and serve to accommodate the clamping springs 434, 435 of the stripping device 402, which are similar in cross-section
• Clamping grooves 446, 447 extend on both sides parallel to a vertical central longitudinal plane of the cleaning device 401 and are separated by a central guide spring 448, which is provided for approximately axial engagement in the central, inversely approximately U-shaped, clamping central longitudinal groove 442 of the stripping device 402 is.
• the clamping grooves 446, 447 are therefore slightly longer than the clamping springs 434, 435 and closed at the rear end.
• the two clamping grooves 446, 447 are undercut in such a way that outer groove walls 449, 450 of the clamping grooves 446, 447 with the opposite, mutually parallel side walls of the guide spring 448 enclose an angle which widens in each case towards the groove bottom, but which does towards the rear , closed end of the clamping grooves 446, 447 is reduced.
• the achievement of a frictional engagement or clamping fit between cleaning device 401 and stripping device 402 can be provided directly between the two working devices 401, 402. 15 to 24 by a frictional connection between a front, upper end 451 of the central guide spring 448 of the cleaning device 401 and the forward and downward curved wall 443 of the wiper head 409 in the downwardly open longitudinal longitudinal groove 442 by a frictional connection reinforcing friction inhibition when inserting the guide spring 448 of the stripping device 402 into the cleaning device 401 can be achieved.
• a particularly advantageous, direct, that is to say achievable without additional parts, frictional connection between the two tools 401, 402 can be realized as described below:
• an axially extending, approximately cylindrical cavity 428 in the handle 404 of the cleaning device 401 is provided with a front, upper cutout 429 which corresponds to approximately one third of the entire length of the handle 404.
• This cutout 429 runs along a division plane T4 with respect to the stripper head 409 of the stripper 402 in FIG. 23.
• a first, rear and flat section T4a of this division plane T4 is from the top of the handle 404 to the front end of the handheld device 400 directed obliquely forwards and downwards to approximately the central longitudinal plane of the handle 404 and therefore includes an obtuse angle opening upward towards the front end of the handle 404.
• apex of this obtuse angle forms a step 430, according to which a second, front section T4b of the parting plane T4 is initially gradual and then more strongly curved forward and downward and ends in the vertical stop surface 417 of the cutout 416 of the wiper plate 407.
• An edge 452 of the underside of the wiper head 409 in FIGS. 17, 18, 19, 22 and 23 naturally corresponds to the contour of an edge 453 of the cutout 429 of the handle 404 or the top of the cleaning head 406 (FIG. 20), so that the Handheld device 400 in the assembled state of work tools 401, 402 has a smooth surface in the area of division plane T4. 15 and 21, the rear, increasingly narrower and end of the wiper head 409 is shaped as a nose 455 which is round in plan view. The nose 455 is delimited by a rear face 456.
• the nose 455 is delimited by vertical guide surfaces 458, 459 which are triangular and parallel to one another in side view, of which only the right guide surface 458 can be seen in FIG. 23.
• the top of the stripper head 409 according to FIGS. 16 and 21 is provided with a finger dent 460 and several arrow-shaped gripping ribs 461, which facilitate the removal of the friction or clamping connection between the cleaning device 401 and the stripping device 402 by hand .
• the top 453 of the cutout 429 of the tubular handle 404 of the cleaning device 401 forming the insertion opening 463 is provided on its upper side with a facing into the insertion opening 463, see groove-like chamfer 464 (FIG. 24).
• This chamfer 464 is directed obliquely backwards and downwards into the interior of the handle 408 of the stripping device 402 and has a width which corresponds to the distance between the two vertical, axially parallel guide surfaces 458, 459 in the region of the nose 455 of the stripping head 409.
• the frustoconical end face 456 of the nose 455 with its lateral guide surfaces 458, 459 can fully engage in the insertion opening 463 of the tubular handle 404 of the cleaning device 401 in the region of this chamfer 464 and the nose 455 of the wiper head 409 is flush as far as it will go apply to the edge 462 of the cutout 429.
• an edge 453 of the top 454 of the cleaning head 406 surrounding the insertion opening 463 of the cleaning device 401 and curved forward and downward and the underside, correspondingly curved Edge 452 of the scraper head 409 run-up or frictional engagement surfaces 466, 467.
• the curvature of the rear frictional engagement surface 466 of the edge 453 of the cleaning head 406, which is located in front of a vertex forming a step 465, rises to a height through which friction occurs ⁇ end with the stripper 402 is determined.
• the locking and frictional connections described above can, as described, be used either alone or, as shown in the present fourth embodiment, together with one or more of the described frictional connections for the two tools 401, 402.
• the two connecting means When the two connecting means are used together, they can be coordinated with one another in such a way that at the end of the pushing-in movement of the stripping device, the latching device or the frictional engagement, if necessary, by the striking of the stripping device 402 against the cleaning device 401 for the operator can be clearly felt.
• FIG. 22 shows the wiper device .402 in a bottom view with its hollow cylindrical handle 408 and its wiper head 409, which, as a comparison with the cleaning device 401 in FIG. 20 shows, shows the cutout 429 of the handle 404 of the cleaning device 401 completely in this way fills in that a flush, smooth surface of the combined hand-held device 400 is created.
• This enables convenient handling of both the combined hand-held device 400 and separate handling of only the cleaning device 401 or only the stripping device 402, because the means producing a latching or frictional connection are practically invisible to the user and no handling thereof require disruptive design.
• an auxiliary device for example, a rear opening of the handles 404, 408 in FIGS. B. an extension handle can be used.
• the opening in the handle 404 is designated 431.
• latching connection could only consist of latching knobs which are provided on one of the opposing surfaces and cooperate with recesses which either correspond to the shape of the knobs or, as in the case described, in rings engage grooves or other shaped recesses in the opposite surface.
• the hand-held device 200, 300 and 400 in each case consists only of the associated cleaning device and stripping device, which are merely telescopically pushed into one another by their handles up to the stop of the scraper head on the cleaning head and / or by a Form and / or frictional engagement between the two devices can be combined with one another to form the hand-held device, and - if this is desired - only by means of an axial separation by hand in the direction of the arrow in FIG. 11, overcoming what is exerted by the detachable connections Resistance can be separated.
• both handles have a round or oval cross-section over their entire length and consequently enable particularly convenient handling as in the case of separate cleaning devices and scrapers, the surface of the handles being contoured in a rib-like manner by one to convey better grip and to facilitate the relative, telescopic pushing movement of the handles.
• the rear ends of the tubular, hollow-cylindrical handles 404, 408 of the cleaning device 401 and of the stripping device 402 are open and each have a section 471, 472 tapering inwards in the shape of a truncated cone.
• These sections 471, 472 of the handles 404, 408 of the two working devices 401, 402 can form the same cone angle that opens outwards.
• the diameter of the inner end of the conical end portion 471 of the cleaning device 401 is smaller than the diameter of its otherwise approximately cylindrical cavity, so that an annular shoulder 473 is formed which acts as a stop for a rear end 474 of the handle 408 of the stripping device 402 can serve.
• the inner diameter of an opening 475 in the rear end 474 of the handle 408 of the stripping device 402 is smaller than the inner diameter of the inner ring shoulder 473 in the handle 404 of the cleaning device 401, so that the rear end 474 of the handle 408 of the stripping device 402 forms an inner ring shoulder , some of which are on the ring shoulder 476 when both are pushed together Appliances 401, 402 abut, but protrude radially inward beyond the latter.
• both conical end sections 471, 472 of the handles 404, 408 of the two tools 401, 402 are stepped in diameter and can only be used to directly or indirectly mount an actuating rod for working with the combined hand tool 400 or for working with serve the cleaning device 401 or only with the scraper device 402.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
• Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
• Polarising Elements (AREA)
• Cleaning In General (AREA)

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Publications (2)

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• 1993
  • 1993-09-07 DE DE4330271A patent/DE4330271C2/de not_active Expired - Fee Related
• 1994
  • 1994-09-07 DK DK94928320T patent/DK0719107T3/da active
  • 1994-09-07 EP EP94928320A patent/EP0719107B1/fr not_active Expired - Lifetime
  • 1994-09-07 AT AT94928320T patent/ATE187314T1/de active
  • 1994-09-07 AU AU77803/94A patent/AU7780394A/en not_active Abandoned
  • 1994-09-07 WO PCT/EP1994/002984 patent/WO1995007044A1/fr active IP Right Grant
  • 1994-09-07 CA CA002170154A patent/CA2170154C/fr not_active Expired - Fee Related
  • 1994-09-07 ES ES94928320T patent/ES2140559T3/es not_active Expired - Lifetime
  • 1994-09-07 US US08/612,898 patent/US5666685A/en not_active Expired - Lifetime
  • 1994-09-07 JP JP7508457A patent/JPH09500310A/ja active Pending
  • 1994-09-07 DE DE59408992T patent/DE59408992D1/de not_active Expired - Lifetime
  • 1994-09-07 PT PT94928320T patent/PT719107E/pt unknown
• 2000
  • 2000-02-29 GR GR20000400497T patent/GR3032796T3/el unknown

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