DK142303B - Apparatus for cleaning especially vertical or inclined surfaces. - Google Patents

Description

142303

The present invention relates to an apparatus for cleaning, in particular, vertical or inclined surfaces, such as high-seated windows and building façades, and containing a cleaning body arranged on an outrigger on a control rod.

05 It is already known in such apparatus or implements that; securing a sponge formed as an elongated rectangular plate in a recess on a holding plate and securing said holding plate to the free end of the actuator bar by a hinge joint. Supply of rinsing fluid, such as water, to the sponge may be effected through a central nozzle located in the actuating rod.

With some known devices, dirt can be loosened from the surface of the cleaning while the dirty basket is only difficult to completely remove from the surface. At edges and 1 corners, for example in a window, dirt can only be loosened and removed everywhere, provided the cleaning body of the apparatus has intact and not worn edges, and provided the control rod is moved exactly perpendicular to the side.

From French Patent Specification No. 1,215,855 a cleaning apparatus of the current type is known in which the above disadvantage has been attempted to be remedied by narrowing a cleaning body in the area at the front edge of clamping strips for holding the cleaning body.

However, the bending resistance of the cleaning body is, however, greatly reduced, and this entails the risk that the cleaning body may shake or roll on a surface that is under cleaning as the apparatus is moved up and down or back and forth.

The apparatus according to the invention is peculiar to that of the characterizing part of claim 1. Thus, such rolls or heels are prevented by the fact that the two plastic sheets of the cleaning body support each other under a certain bias along the boundary zones, and at the same time the special retention and mounting of the plastic sheets used provide a relatively high bending resistance for them.

Furthermore, the special design and mounting of the cleaning body means that the apparatus according to the invention is also suitable for cleaning difficult places, such as corners and edges.

Furthermore, the fact that the cleaning body has a good bending stiffness as a result of the assembly means that a relatively high surface pressure can be applied and thus a more efficient cleaning. The apparatus 2 142303 according to the invention also allows cleaning of window surfaces whose frame sides are not perpendicular to each other, even if the cleaning body is relatively worn and even if the control bar is slightly inclined.

According to the invention, the protruding clamping members of the clamping strips are preferably formed as longitudinal ribs extending from the clamping strips, whereby a central compression of the cleaning body and an effective fixing thereof can be achieved.

In the following, the invention will be described in more detail in connection with an exemplary embodiment and with reference to the drawing, in which: Figure 1 shows a side view of an apparatus according to the invention with an outrigger partially shown in section, Figure 2 is a top view of Figure 1; Figure 3 shows a detail of the scale shown in Figure 1, partially 15 in section along the line I II-II I in Figure 2, and Figure 4 a section along the line IV-IV in Figure 1 on a larger scale.

At the upper end of a cross-section, e.g. circular control rod 1, a pin is shown in Figure 1. The pin 2 carries a fork-shaped holder, between whose plate-shaped fork parts 8, a 20, also plate-shaped end 10, of an outrigger 14, which is rotatable by a screw 9. In addition to serving as the axis of rotation of the boom 14, the screw 9 serves to exert a certain frictional restraint between the fork parts 8 and the plate-shaped end 10 of the boom 14. As shown in Figure 4, the plate 10 is provided on both sides. with 25 recesses 13,. which extends almost to the circular plate edge, whereby at a certain compressive pressure from the screw 9 a greater frictional resistance is obtained between the disc 10 and the fork parts 8.

In order not to turn the screw 9, for example, the hexagonal screw head 9 'is inserted into a correspondingly shaped recess 8' in one of the 30 fork parts 8. To control a flushing medium hose 6 near the hinge location between the operating rod 1 and the boom 14, two serve on the fork parts. 8, patches 8 "are placed between which the hose 6 extends.

The outrigger 14 consists of a pipe piece 14a into which a thinner pipe piece 14b is inserted. A torsion bar 15 is secured with its innermost end 15 'to the inner end of the tube piece 14b. At the other end of the torsion bar 15 is mounted a holder 16, in which a square tube 17 is secured by means of a screw tube 17 with its longitudinal axis extending transversely of the boom 14. The holder 16 is formed with a tube carrier 16 'which its upper end has an eye 16 "into which a pipe nipple 28 is inserted. On the left part of the pipe nipple 28 is connected a flushing hose, for example a water hose 05 6, while the nipple portion protruding to the right of the pipe carrier 16 ' a flushing pipe 26 parallel to the square pipe 17, which is provided in its full length with a series of small bores 27. with forward orifice apertures.

The square tube 17 is provided with a forward plate-shaped projection 19. This, for example, of a thin plate-shaped projection 19 has the shape of a long, narrow rectangle, whereby the protruding plate 19 has its plane coinciding with the axis of the protrusion 14 and its longitudinal axis extending transversely. The shaft 14 and parallel to the purging tube 26. The plate-shaped projection 19 serves to receive two cleaning bodies 20 disposed on both plate sides, also formed as elongated, narrow rectangles, which, as shown in Figure 2, protrude at both ends and front. 20 beyond the projection 19. As a material for the cleaning plates 20, a water-repellent porous resin may conveniently be used.

For fixing the cleaning plates 20 to the projection 19, two clamping strips 23 can be secured which can be screwed into the threaded sleeves 21 provided with screws 22 on the projection 19. The terminal strips 23 are provided with ribs 24 on the sides facing the cleaning plates 20 and the ribs are it can be seen in Figure 2, broken down at the locations where screws 22 or threaded sleeves 21 are. As also shown in Figure 2, the front corners of the clamping strips 23, and as not seen in the figure, also the front corners of The projection spring 19. This allows the cleaning plates to be used longer without contacting the corners with the window frame.

The ribs 24 are located at a distance A from the leading edge 23 'of the clamping strips.

The commercially designed water repellent molding materials can, as a regular sponge, be easily compressed and bent. Therefore, a special fastening method is necessary so that the front portion touching the surface to be cleaned remains fully operable. Because the clamping strips 23 are narrower U2303 4 than the plastic cleaning plates 20, and only have ribs 24 in the middle, the cleaning pads are only pressed strongly at these ribs and are safely guided all the way to their front edge 20 '.

For example, when the cleaning body 20 is pushed upwards against a window, 05 the lower half of the cleaning body exerts some support from the upper half, and the retracted leading edge 23 'of the molding 23 also provides some support for the plastic cleaning body. The fastening device described allows for easy replacement of the plastic cleaning plate number 20, which need only be cut and not glued, and in addition 10 can be used twice when reversing these 180 °. By applying several parallel rows of threaded sleeves 21 to the plate 19, the cleaning body can be utilized even better.

The plastic cleaning plates can also be attached to a circular or oval tube, but the fabrication and attachment is more expensive and more complicated. Thanks to the suspension of the torsion bar 15, the corners of the cleaning body 20 are spared.

In case of very stuck dirt, a cleaning agent can be added to the water.

In order to also be able to clean the 20 windows all the way to the innermost corners, even at very deep windows, the length of the outrigger 14 must be adjusted to the greatest depth of frame. The dimensioning of the individual parts of the control rod 1 and the boom 14, etc., depends on what the apparatus is to be used for, but is also, as far as possible, dimensioned and suitably made of a light metal, such as Anticorodal, or of plastic.

The friction at the hinge site between the boom 14 and the operating rod 1 can be suitably adjusted so that the boom of the friction occurring during the actual cleaning work does not change position, but can still be turned if the cleaning bodies 30 20 are actuated at a pressure above that of the actual cleaning needs to push up or down, eg towards a window frame page. Therefore, the apparatus according to the invention does not have to interrupt its cleaning function when the adjustment of the boom relative to the control rod is desired to be changed. This advantage, in particular, results in a considerable time saving of very 35 long control rods. With a strong downwardly extending luminaire, the apparatus according to the invention can also wash window sills.